6级考前冲刺试题三

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六年级下册数学试题-小升初数学考前冲刺试题三 2019年贵州贵阳 人教版(2014秋)(含答案)

六年级下册数学试题-小升初数学考前冲刺试题三 2019年贵州贵阳 人教版(2014秋)(含答案)

2019年贵州省贵阳市小升初数学考前冲刺试题三一、填空1.________÷30= =8:________=________%2.7公顷=________平方米5平方千米=________公顷3.据科学家测算,地球与太阳的距离大约是一亿四千九百六十万千米,写作________千米,省略亿位后面的尾数约是________亿千米。

4.2:________ = ________5.最大公因数是________的两个数,是互质数.6.看图线段a垂直于线段b,请填出每种角的个数。

(________)个直角,(________)个锐角,(________)个钝角,(________)个平角。

7.在比例尺是1:10000的图纸上,量得一块长方形地的长是4厘米,宽是2.5厘米,这块地的实际面积是________平方厘米。

8.今年的产量比去年增产25%,今年的产量是去年的________%。

9.一堆煤,运走煤的吨数和剩下煤的吨数。

________10.算一算下列商品打折后的价钱.(填写整数或小数)七五折:________二、仔细推敲,认真辨析11.生产的总时间一定,生产零件的个数和生产一个零件所用的时间成正比。

12.若小红和小花写字数量的比是7∶4。

则小红比小花多写。

13.任意翻动2011年台历,翻到星期天的可能性要比翻到偶数日的可能性小.14.180÷9-72÷9=(180-72)915.如果一个圆等分的份数越多,拼出的图形就越接近长方形.16.若四个连续自然数的倒数之和是,则四个数的和的倒数是。

17.425÷8=52 (8)三、对号入座18.0.8里面有()个1%。

A. 8B. 80C. 80019.兴农种子公司用350粒种子做发芽实验,其中有50粒种子没有发芽。

兴农种子公司这批种子的发芽率是()。

A. 50÷350×100%B. 350÷50×100%C. (350-50)÷350×100%20.比的前项不变,后项扩大2倍,比值缩小()倍。

北师大版六年级数学下册期末考前冲刺卷(二)(含答案)

北师大版六年级数学下册期末考前冲刺卷(二)(含答案)

北师大版六年级数学下册期末考前冲刺卷学校:_______ 班级:_______ 姓名:_______ 考号:_______一、选择题1.一个平行四边形的相邻两条边长分别是10厘米和6厘米,其中一条边上的高是8厘米,这个平行四边形的面积是()平方厘米。

A. 40B. 48C. 60D. 802.下面几组相关联的量中,成正比例的是( )A. 看一本书,每天看的页数和看的天数B. 圆锥的体积一定它的底面积和高C. 修一条路已经修的米数和未修的米数D. 同一时间、地点每棵树的高度和它影子的长度3.在一幅图纸上,图上距离( ) 实际距离。

A. 大于B. 小于C. 可能大于,也可能小于或等于D. 无法确定4.一个钟表零件是5mm,把它画在比例尺是20∶1的地图上,应画( ) cm。

A. 0.1B. 1C. 10D. 1005.下面四种说法中,()是错误的。

A. 等边三角形的周长与边长成正比例B. 看一本书,已看的页数与剩下的页数成反比例C. 比例尺一定,图上距离与实际距离成正比例D. 平行四边形的面积一定,底与对应的高成反比例二、判断题1.所有的三角形都是轴对称图形。

( )2.在对折的正方形彩纸上的任意位置打孔,将彩纸展开后,孔都是对称的。

( )3.时间一定,路程和速度成正比例。

( )4.如果长方形的面积一定,则长方形的长和宽成反比例。

( )5.在一幅区域地图上,图上距离和实际距离成比例.( )三、填空题1.汽车在笔直的公路上行驶,车身做( ) 运动,车轮做( ) 运动。

2.时针从2时到6时,按( )方向旋转了( )°。

3.如果5y =6x ,那么x 和y 成( ) 比例;如果5y =6x ,那么x 和y 成( ) 比例.4.如果5x=8y (x 、y≠0),x 与y 成( ) 比例.5.一个零件的高是5mm ,在图纸上的高是2cm ,那么这幅图纸的比例尺( ) 。

6.把一个直角三角形按3∶1进行放大,面积会扩大( ) 倍。

公卫执业助理医师考试考前冲刺试题及答案(3)

公卫执业助理医师考试考前冲刺试题及答案(3)

公卫执业助理医师考试考前冲刺试题及答案(3)2017公卫执业助理医师考试考前冲刺试题及答案考前冲刺试题二:一、A1型题1.关于颅内压增高的临床表现,哪项不正确A 亚急性颅内压增高多见于发展较快的颅内恶性肿瘤B 头痛是最常见的症状之一,以早晨或夜间较重C 喷射性呕吐多见,与进食无关D 在婴幼儿头痛出现较早且较重E 可有外展神经麻痹2.影响颅内压增高的因素,除外A 年龄B 颅内肿瘤的性质C 病变部位D 全身状况E 成人颅腔3.关于颅内压的数值,哪项错误A 成人的正常颅内压为0.7~2.0 kPaB 儿童的正常颅内压为50~100mmH2OC 颅内压持续在2.0 kPa以上,有颅内压增高D 脑脊液的总量占颅腔总容积约5%E 成人颅内压低于50mmH2O,称低颅压4.颅内压一般以为代表A 脑灌注压B 平均动脉压C 脑脊液静水压D 动脉压E 静脉压5.在颅内压的调节过程中,起主要作用的是A 脑组织B 脑脊液C 血液D 颅腔容积E 血压和呼吸6.颅内压增高时,下列哪项不对A 收缩压升高B 脑脊液分泌减少C 脑脊液吸收增加D 脑脊液被挤入脊髓蛛网膜下腔E 主要通过血流量的增减来调节颅压7.下列哪项情况可以加速颅内压增高病情的进展A 婴幼儿及小儿B 老年人C 三脑室肿瘤D 颅前窝肿瘤E 未破裂的脑血管畸形8.颅内压增高时,脑组织可无明显中线移位的疾病有A 交通性脑积水B 顶叶转移瘤C 顶叶脑膜瘤D 颞叶胶质瘤E 额叶胶质瘤9.可引起良性颅内压增高疾病除外A 脑蛛网膜炎B 良性颅内肿瘤C 静脉窦血栓D 维生素A摄入过多E 药物过敏10.关于颅内压增高的诊断,哪项正确A 应行腰穿检查,明确颅内压是否大于2.0 kPaB 多用头颅X线摄片C 首选颅脑MRI,进一步明确病因D 当有头痛、呕吐、视乳头水肿时,诊断可肯定E 脑电图检查以确诊11.对于颅内压增高较重或急性的病人A 先选用口服药物,如乙酰唑胺、氨苯喋啶B 侧脑室穿刺放脑脊液C 20%人血白蛋白静滴D 静脉应用20%甘露醇或速尿E 50%葡萄糖和维生素C静推12.不宜用作降颅压措施的是下列哪项A 过度换气B 人工冬眠低温疗法C 使用糖皮质激素D 引流脑脊液E 某些抗菌素、止血剂13.关于使用20%甘露醇治疗脑水肿的描述哪项是正确的A 缓慢滴注B 快速推注C 一次剂量在2小时内滴完D 10~20分钟可以起效E 可引起肝肾功能损害在小脑幕切迹裂孔中通过的组织是A 脑桥B 延髓C 小脑D 中脑E 间脑下例哪项是对动眼神经走行的正确描述A 发自脑桥的动眼神经越过小脑幕切迹走行在海绵窦中直至眶上裂B 发自大脑脚内侧的动眼神经越过小脑幕切迹走行在海绵窦的外侧壁直至眶上裂C 发自大脑脚内侧的动眼神经越过小脑幕切迹走行在海绵窦中直至眶上裂D 发自延髓的动眼神经越过小脑幕切迹走行在海绵窦中直至眶上裂E 发自脑桥的动眼神经越过小脑幕切迹走行在钩回、海马内侧面直至眶上裂下列不会引致脑疝的是A 硬膜外血肿B 腰穿放液不当C 脑胶质瘤D 腔隙性梗塞E 脑脓肿颞叶钩回疝又称为A 小脑扁桃体疝B 大脑镰下疝C 环疝D 小脑幕切迹疝E 中心疝以下哪项不是脑疝的病理生理改变A 脑干出血B 动眼神经麻痹C 脑积水D 枕叶梗塞E 额叶梗塞小脑幕切迹疝的病理变化不包括以下哪一项A 枕叶皮层缺血坏死B 基底动脉进入脑干的中央支可被拉断而致脑干内部出血C 早期出现呼吸循环障碍D 脑脊液循环通路受阻, 加重颅内压增高E 动眼神经麻痹右侧小脑幕切迹疝早期的临床表现是A 昏迷, 右侧瞳孔散大, 左侧肢体瘫痪B 昏迷, 左侧瞳孔散大, 左侧肢体瘫痪C 昏迷, 右侧瞳孔散大, 右侧肢体瘫痪D 昏迷, 左侧瞳孔散大, 右侧肢体瘫痪E 昏迷, 双侧瞳孔散大, 四肢瘫痪在小脑幕切迹疝中以下的瞳孔变化表现,哪项是错误的A 早期瞳孔变小, 对光反射迟钝B 瞳孔逐渐散大, 患侧上睑下垂、眼球外斜C 患侧瞳孔直接对光反射消失, 间接对光反射存在D 患侧瞳孔直接和间接对光反射均消失E 双侧瞳孔散大, 对光反射消失小脑幕切迹疝特征性的临床表现是A 剧烈头痛, 频繁呕吐, 颈项强直B 生命征紊乱较早出现, 呼吸骤停C 渐进性意识障碍, 瞳孔不等大, 对侧肢体偏瘫D 昏迷, 去大脑强直, 血压升高E Cushing 反应枕骨大孔疝和小脑幕切迹疝的主要区别点是A 头痛B 频繁呕吐C 血压升高, 脉搏缓慢D 早期发生呼吸骤停E 昏迷抢救脑疝首先采用哪种措施A 快速静脉输注高渗降低颅内压药物B 侧脑室体外引流术C 脑脊液分流术D 颞肌下减压术E 开颅病变切除术当病人出现小脑幕切迹疝时,表现为对侧肢体偏瘫,是因为A 对侧大脑脚受到挤压B 脑脊液循环通路受阻C 内囊出血D 枕叶皮层缺血坏死E 同侧大脑脚受到挤压当严重脑积水继发脑疝时,最有效的紧急处理措施是A 甘露醇快速脱水B 侧脑室体外引流术C 镇静镇痛D 紧急开颅手术切除病变E 使用人血白蛋白二、B1型题(27~31共用备选答案)A Cushing反应B 颅内压增高C 良性颅内压增高D 严重颅内压增高E 弥漫性颅内压增高27.伴有意识淡漠或躁动,颈项强直28.交通性脑积水或心跳呼吸骤停复苏后29.头痛、呕吐、视乳头水肿30.伴有血压升高,心跳和脉搏缓慢31.脑蛛网膜炎,维生素A摄入过多(32~36共用备选答案)A 血管源性脑水肿B 细胞毒性脑水肿C 渗透压性脑水肿D 脑积水性脑水肿E 混合性脑水肿32.由于某些毒素直接作用于脑细胞而产生代谢功能障碍33.脑肿瘤、脑外伤的初期,毛细血管通透性增加34.重型脑外伤出现脑缺氧,导致颅内压增高的晚期35.由于脑脊液分泌吸收障碍,可行脑脊液引流术36.水电解质平衡紊乱,出现水中毒(37~41共用备选答案)A 颞叶的海马、钩回通过小脑幕切迹被推至幕下B 小脑扁桃体及延髓经枕骨大孔推挤向椎管内C 一侧半球的扣带回经镰下孔被挤入对侧分腔D 颅腔与脊髓腔相连的出口E 容纳脑桥、延髓及小脑37.枕骨大孔疝38.小脑幕切迹疝39.大脑镰下疝40.幕下腔41.枕骨大孔三、A2型题42.男性,1岁,因生后出现进行性头颅增大住院。

6级考前冲刺试题二含答案

6级考前冲刺试题二含答案

6级考前冲刺试题二含答案6级考前冲刺试题二Part I Writing (30 minutes)Directions:For this part, you are allowed 30 minutes to write a short essay entitled Social Network Sites. You should write at least 150 words following the outline given below.1. 当今社会,社交网站很流行2. 各人对此看法不同3. 我的看法Social Network Sites________________________________________________________________ ____________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ____________________________Part II Reading Comprehension (Skimming and Scanning) (15 minutes)Directions: In this part, you will have 15 minutes to go over the passage quickly and answer the questions on Answer Sheet 1. For questions 1-7, choose the best answer from the fourchoices marked A), B), C) and D). For questions 8-10, complete the sentences with theinformation given in the passage.Dogs Make Employees More Productive At WorkLeib Lurie never intended for his company, message delivery service One Call Now, to be pet-friendly. But his dog, Ivy, had other ideas.Five years ago, the German shepherd showed up unannounced at One Call Now?s Troy, Ohio-based office—a 1.5-mile trek from Lurie?s home. When he continued to make the trip each day he wasn?t brought to the office, Lurie realized it was time for a change i n company policy. T oday, four or five employee?s dogs, as well as a variety of fish, birds, and other caged animals join Ivy in the office daily to make One Call Now aworkingman?s menagerie (动物园).“They?re not very good at sending voice messages,” Lurie jokes of the pets in his office. “But we?ve gotten them down with using the computer, at least the point part.”One Call Now joins a growing force of companies across the United States to welcome pets in the workplace. While only 17 percent of U.S. employers currently allow animals in the workplace, according to a survey from the American Pet Products Manufacturers Association, pet-friendly, often specifically dog-friendly, environments are building steam. From major companies like Google, Zynga, and /doc/f29ed112a8114431b90dd89e.html to growing start-ups, more and more canine companions are showing up to work.For many entrepreneurs, the inception of a dog-friendly environment begins long before offices enter the picture. “My dog, Blueberry, was the founding dog,” explains Randy H etrik, founder of TRX Training. “Literally, it was him and me before any other people came in, so he takes great pride in what we?ve accomplished.” As Hetrik built his company, he never forgot his first partner. T oday, up to ten dogs wander with Blueberry through the four floors of TRX?s San Francisco office.Many pet-friendly work environments develop as a part of the company?s larger mission or company culture. After spending years in uptight corporate climates, Nancy Squires founded her own consulting firm, The Squires Group, with a distinctly homey atmosphere, which included her two Italian greyhounds.Marketing software company G5?s dog-friendliness fits into the animal-friendly climate of their mountain town Bend, Oregon,as well as the company?s own cultural backbone. “We try to have aculture that promotes freedom for the employees and helps them thrive,” says G5 CEO Dan Hobin. “If that involves bringing your dog to work, bring your dog to work.”Having dogs underfoot might seem to some like a distraction, but advocates of animals in the workplace see quite the opposite. Dogs in the office foster friendlier, more collaborative work environments. At G5, this includes dogs posing as mascots for the company?s various divisions. “Everyone rallies around the dogs,” Hobin says.Employees surrounded by dogs also have a tendency to rally around their jobs. According to a survey of 50 small and large companies by the American Pet Products Manufacturers Association in 2008, companies that allow pets in the workplace see a lower rate of employee absenteeism (旷工) and more willingness to work longer hours.“There are a lot of people who know they have to spend extra hou rs at work, particularly in this economic climate,” says Debrah Schnackenberg, vice president of emergency services for the American Humane Association. “People feel comfortable spending that extra hour or two at the office when they know their dog is righ t there with them.”Dog-friendliness may generate more loyalty for the company as a whole. In the last two years, One Call Now has seen a two or three percent turnover rate. Lurie attributes this small number in part to the office pets. “You ask someone wh o is in a $12-an-hour job, …Would you work anywhere else?? And they say, …No way.? Where else could I bring my dog to work?” he says.This sense of loyalty stems from a simple concept: Dogsmake people happy. “They?re always happy to see you, they?re happy for the smallest things, and they?re ever optimistic,” says Hetrik. “Having a dog wandering around just seems to make people smile.”In high-performance or high-stress work environments, dogs can not only spread smiles but also ease tension. Taking a walk, practicing a trick, or even absentmindedly scratching a dog behind the ear allows even the most worked-up employee to relax and reprioritize. “It?s their cigarette,” says Squires. “The dogs are a sense of peace, gentleness, a diversion, something other than what we define as work.I think it?s a great break.”And, a dog break is certainly healthier than a smoke break. Numerous studies have shown that having the companionship or even being in the presences of a pet, for instance in the workplace, lowers blood pressure and cortisol levels while heightening endorphins and oxytocin, the hormone linke d to maternal bonding. Such an emotional connection is healthy for your dog as well. “Dogs bond to their humans and would rather be with them than not,” says Schnackenberg. “From an emotional well-being perspective, it?s healthy for a dog to be with their owner throughout the day.”With their many attributes and benefits, dogs play a critical role in pet-friendly company?s hiring processes. All of the aforementioned companies and many more like them use their dogs in theinterview process to introduce potential employees to the corporate climate. Their reactions to the animals also serve as a compatibility test. “I?ve never met a dog-friendly person who wasn?t a customer-friendly person,” says Lurie. “And we hirecustomer-friendly people.”The dog un-friendly or the allergenic, however, need not apply.“You try to build a company of people who can rally around a vision, and dogs play a part of that,” Hetrik says. “Pe ople who look at that and say how stinky or hairy or whatever probably aren?t people that are going to mold well into the casual, rough and tumble, work hard, play hard work environment that I?ve created.”The Squires Group maintains a similar mantra (口号). “If people don?t do dogs, there may be another part of the company they don?t do,” Squires says. “I?m not saying they?re bad people or that they wouldn?t be great for other companies, but they wouldn?t fit our company greatly.”Companies considering introducing a dog-friendly work environment should consider adopting a pet policy. When advising companies in this transition, the American Human Association suggests highlighting clear rules about when you can bring your dog in, what behavior is expected, and what happens when the pet or person does not conform to those rules.Many small companies adopt these advised policies, but govern their pets in a more ad hoc (非正式的) manner. After a few minor “accidents,” G5?s HR Department developed a detailed pet policy to include in the company handbook. “I don?t think I actually ever re ad it,” admits Hobin. “In short, though, the policy is to be responsible and respectful.”At TRX, dogs are under the same considerations as people. “You wouldn?t tolerate a lot of barkin g, snapping and snarling from the people you work with,” Hetrik says. “Neither should you tolerate it from the canine pals they bring to work. We?repretty clear on all that.” Growing companies should also be flexible to changing the stipulations in their policy as they develop.Adjustments to the TRX pet policy are under consideration as the company intends to expand its workforce from 120 to 300 employees. The company may introduce a sign-up, limiting the total number of dogs to the current two to three per floor. No matter the changes, though, dogs will remain a fixture in the company.“Dogs were part of the fabric from the very beginning,” says Hetrik. “And they?ll be here until the very end. I like having these pups around.”1. Leib Lurie realized he should change the company to be pet-friendly when _______.A) employees brought their pets to the officeB) his pet dog showed up in the office dailyC) he found dogs make employees more productiveD) his company moved to the office in the suburban2. What do we learn from the study by the American Pet Products Manufacturers Association?A) Living environments for pet dogs have improved.B) Small companies tend to adopt dog-friendly policy.C) More businesses welcome pets in the workplace.D) Employees show a growing interest in raising pets.3. According to G5 CEO Dan Hobin, employees can bring their dogs to work as long as _______.A) they thrive with their dogs? company C) their dogs are friendly to customersB) they can keep the dogs from barking D) the office is located at a mountain town4. According to advocates of animals in the workplaces, dogs in the office _______.A) can attract employees? attention sometimesB) won?t distract employees from their workC) force inefficient employees to work harderD) seldom pose a threat to other employees5. To some degree, the low turnover rate of One Call Now was attributed to _______.A) the relatively high pay C) its excellent conditionsB) the economic recession D) its pet-friendly policy6. What does Schnackenberg say about dogs? being with their owners throughout the d ay?A) It does great harm to their owners? health.B) It benefits dogs more than their owners.C) It is unrealistic in this economic climate.D) It is good for dogs? emotional well-being.7. Lurie believes that a dog-friendly person _______.A) is less likely to work efficiently C) is welcome in all companiesB) is a customer-friendly person D) is usually disloyal to the company8. According to Squires, people who don?t like dogs are not ______________________________ for her company The Squires Group.9. The American Human Association advises companies to make and highlight ______________________________ in their transition to dog-friendly companies.10. TRX is considering ______________________________ its pet policy as it intends to increase thenumber of its employees.Part III Listening Comprehension(35 minutes)Section ADirections: In this section, you will hear 8 short conversations and 2 long conversations. At the end of each conversation, one or more questions will be asked about what was said. Both the conversation and the questions will be spoken only once. After each question there will be apause. During the pause, you must read the four choices marked A), B), C) and D), anddecide which is the best answer. Then mark the corresponding letter on Answer Sheet 2with a single line through the centre.11. A) The results of her finals are ironic.B) The man should have attended the lectures.C) The result of the final is unbelievable, too.D) The man should not have chosen urban planning.12. A) She wanted to please the man.B) She bought the ticket on impulse.C) She wanted to invite her professor to the concert.D) She meant to ignore the appointment with her professor.13. A) He declined the bookstore job once.B) He really wants to work in the bookstore.C) He didn?t know where the bookstore was.D) He wasn?t offered the job in the bookstore.14. A) The tailor?s. C) The theatre.B) A dress-up party. D) A shopping mall.15. A) Her mom has approved without hesitation, while her dad hasn?t.B) Her dad has approved of it, and her mom will probably do the same.C) Her dad still needs time to think, while her mom hasalready agreed.D) Her dad needs tim e to think, while her mom definitely won?t consider it.16. A) He couldn?t make time for it. C) He was not in the mood for it.B) He had probably caught the flu. D) He went floating with some other students.17. A) She feels very hot in the room. C) She wants to avoid meeting people.B) She doesn?t like the smell inside.D) She wants to smoke a cigarette there.18. A) He dislikes this job, so he will quit soon.B) He likes the job, if not for those working hours.C) He?s not decided, but he knows he shouldn?t quit.D) He wants to change his job for all he likes about it.Questions 19 to 21 are based on the conversation you have just heard.19. A) The climate there is too cold. C) He has visited it twice before.B) The air-fare is quite expensive. D) He does not have the passport.20. A) He has just reconditioned his house. C) He has just come back from abroad.B) His old car has just been repaired. D) He doesn?t have long enough time.21. A) He hasn?t been th ere before. C) His friend will accommodate him.B) He can meet his girlfriend there. D) He can find a temporary job there.Questions 22 to 25 are based on the conversation you havejust heard.22. A) Frank. C) Indirect.B) Modest. D) Confident.23. A) Money is important.B) Responsibility means more than salary.C) High salary secures better performance.D) Future income is more important than starting salary.24. A) “Can do” spirit.C) Honesty and responsibility.B) Motivation and teamwork. D) Hard-working and cooperation.25. A) Tolerance. C) Clearer wording.B) Civilization. D) Communication.Section BDirections:In this section, you will hear 3 short passages. At the end of each passage, you will hear some questions. Both the passage and questions will be spoken only once. After you hear a question, you must choose the best answer from the four choices markedA), B), C) and D). Then mark the corresponding letter on Answer Sheet 2with asingle line through the centre.Passage OneQuestions 26 to 28 are based on the passage you have just heard.26. A) A little girl. B) A little boy. C) A secretary. D) A dog.27. A) The medical treatment in Sweden. C) The daily life of the Swedes.B) Keeping a dog in Sweden. D) Social welfare in Sweden.28. A) Dog owners in Sweden needn?t to pay any taxes on their pets.B) Dog owners in Sweden are greatly subsidized by government.C) Dog owners in Sweden must pay for any damage their dog does.D) Two thirds of people in Sweden keep pets.Passage TwoQuestions 29 to 31 are based on the passage you have just heard.29. A) One that is already extinct in some parts of the world.B) One that is extremely dangerous to humans.C) One that will naturally die out in its natural surroundings.D) One that is confronted with extinction in its living environment.30. A) Polluted water. B) Decreasing fish. C) Climate change.D) Over-hunting.31. A) About 15%. B) About 20%. C) About 25%. D) About 30%.Passage ThreeQuestions 32 to 35 are based on the passage you have just heard.32. A) The unequal distribution of housework between men and women.B) The change of women?s attitude towards housew ork.C) The influence of men sharing the housework in American families.D) The change of the time spent on housework in American families.33. A) Marriage gives men more freedom.B) Marriage has effects on job choices.C) Men shares more housework nowadays than before.D) Having children means doubled housework.34. A) About 12 hours. B) About 13 hours. C) About 17 hours.D) About 21 hours.35. A) Unmarried men. C) Younger married men.B) Older married men. D) Married men with children.Section CDirections:In this section, you will hear a passage three times. When the passage is read for the first time, you should listen carefully for its general idea. When the passage is read for the second time, you are required to fill in the blanks numbered from 36 to 43 with the exactwords you have just heard. For blanks numbered from 44 to 46 you are required to fill inthe missing information. For these blanks, you can either use the exact words you havejust heard or write down the main points in your own words. Finally, when the passage isread for the third time, you should check what you have written.Why do so many people live to a healthy old age in certain parts of the world? What is the (36) _________ of their long lives? Three things seem to (37) _________ to it: fresh air, fresh food and a simple way of life. People work near their homes in the clean, mountain air instead of travelling long (38) _________ to work by bus, car or train. They do not sit all day in (39) _________ offices or factories, but work hard outdoors in the fields. They take more exercise and eat less food than peopledoctors. There was no crime, no (40) _________ and not much illness in their society. They were a happy, peaceful people, famous all over India for their long, healthy lives.Although many people are keen on (41) _________ out ways to live a longer life, there are people worrying about their (42) _________ years. Once a retired doctor I (43) _________ shared with me his worries: It?s only natural to look forward to something better. (44) ___________________________________________________________________. It is one of life?s great ironies that the longer we live, the less there is to look forward to Retirement may bring with it the fulfillment of a lifetime?s dreams. (45) ___________________________________________________________________. From then on, the dream fades. (46) ___________________________________________________________________. Who wants to live long enough to become a doddering wreck? Who wants to go back to that most dreadful of all human conditions, a second childhood?Part IV Reading Comprehension (Reading in Depth) (25 minutes)Section ADirections:In this section, there is a short passage with 5 questions or incomplete statements. Read the passage carefully. Then answer the questions or complete the statements in the fewestpossible words. Please write your answers on Answer Sheet 2.Questions 47 to 51 are based on the following passage.According to new research simple words such as …be?, …that?, …will?, …him?, …and? and even …a? could hold the key to a successful marriage. Experts say the style in which couples talk and how they use common words can predict whether a relationship will be successful or not.It is already well known that people are attracted to potential partners who resemble themselves in personality, values and physical appearance. However, experts now claim these features only skim the surface of what makes a relationship work. The ways that people talk are also important according to the study which found that people who speak in a similar style are more compatible. The U.S. study focu sed on what it dubbed …function words?.These are not nouns or verbs, but everyday words such as a, be, anything, that, will, him and even and. Study co-author Professor James Pennebaker, of Texas University, said how we use these words constitutes our writing and speaking style and couples who use them in the same way have better and longer-lasting partnerships.Researchers examined whether the speaking and writing styles couples adopt during conversation with each other predict future dating behaviour and the long-term strength of relationships. They conducted two experiments in which a computer programme compared partners? language styles.In the first study, pairs of college students had four-minute speed dates while their conversations were recorded. Almost every pair covered the same topics, such as their study subject, where they were from and if they liked college. Prof Pennebaker said: “Every conversation sounded more or less the same to the naked ear, but text analysis revealed obvious differences in language synchrony (同步). The pairs whose language style matching scores were above average were almost four times as likely to want futur e contact as pairs whose speaking styles were out of sync.”A second study revealed the same pattern in everyday onlinechats between dating couples over the course of 10 days. Almost 80 percent of the couples whose writing style matched were still dating three months later, compared with approximately 54 percent of the couples who did not match as well.Prof Pennebake r said: “What people are saying to each other is important, but how they are saying it may be even more telling. But what?s wonderful about this is we don?t really make that decision — it just comes out of our mouths. People are not consciously synchronizi ng their speech.”47. New research revealed that the success of a relationship could be _____________________through the way couples used common words.48. Experts now claim that similar _____________________ are not enough in a successfulrelationship.49. According to Professor James Pennebaker, relationships of couples using function words in thesame way tend to be _____________________.50. In the first study, pairs of college students whose languages style matched are more likely to_____________________.51. Prof Pennebaker suggested that _____________________ may have a greater effect on theirrelationships.Section Bunfinished statements. For each of them there are four choices marked A), B), C) and D).You should decide on the best choice and mark the corresponding letter on Answer Sheet2 with a single line through the centre.Passage OneQuestions 52 to 56 are based on the following passage.We tend to think of the decades immediately following World War II as a time of prosperity and growth, with soldiers returning home by the millions, going off to college on the G.I. Bill and lining up at the marriage bureaus.But when it came to their houses, it was a time of common sense and a belief that less truly could be more. During the Depression and the war, Americans had learned to live with less, and that restraint, in combination with the postwar confidence in the future, made small, efficient housing positively stylish.Economic condition was only one stimulus for the trend toward efficient living. The phrase “less is more” was actually first popularized by a German, the architect Ludwig Mies van der Rohe, who like other people associated with the Bauhaus, a school of design, emigrated to the United States before World War II and took up posts at American architecture schools. These designers, including Walter Gropius and Marcel Breuer, came to exert enormous influence on the course of American architecture, but none more so than Mies.Mies?s signature phrase means that less decoration, properly deployed, has more impact than a lot. Elegance, he believed, did not derive from abundance. Like other modern architects, he employed metal, glass and laminated wood (胶合板)—materials that we take for granted today but that in the 1940s symbolized the future. Mies?s sophisticated presentation masked the fact that the spaces he designed were small and efficient, rather than big and often empty.The apartments in the elegant towers Mies built on Chicago?s Lake Shore Drive, for example, were smaller—two-bedroom units under 1,000 square feet—than those in their older neighbors along the city?s Gold Coast. But they were popular because of their airy glass walls, the v iews they afforded and the elegance of the buildings? details and proportions, the architectural equivalent of the abstract art so popular at the time.The trend toward “less” was not entirely foreign. In the 1930s Frank Lloyd Wright started building more modest and efficient houses—usually around 1,200 square feet—than the sprawling two-story ones he had designed in the 1890s and the early 20th century.The “Case Study Houses” commissioned from talented modern architects by California Arts & Architecture m agazine between 1945 and 1962 were yet another homegrown influence on the “less is more” trend. Aesthetic effect came from the landscape, new materials and forthright detailing. In his Case Study House, Ralph Rapson may have mispredicted just how the mechanical revolution would impact everyday life—few American families acquired helicopters, though most eventually got clothes dryers—but his belief that self-sufficiency was both desirable and inevitable was widely shared.52. The postwar American housing st yle largely reflected the Americans?.A) efficiency and practicality C) restraint and confidenceB) prosperity and growth D) pride and faithfulness53. What can be inferred about Bauhaus from the third paragraph?A) It was founded by Ludwig Mies van der Rohe.B) It had a great influence upon American architecture.C) Its designing concept was affected by World War II.D) Most American architects used to be associated with it.54. According to Mies, elegance of architectural design .A) was related to large space C) was identified with emptinessB) was not associated with efficiency D) was not reliant on abundant decoration55. According to the passage, the apartments Mies built on Chicago?s Lake Shore Drive .A) ignored details and proportionsB) were built with materials popular at that timeC) were more spacious than neighboring buildingsD) shared some characteristics of abstract art56. What do we learn about the design of the “Case Study House”?A) Natural scenes were taken into consideration.B) Mechanical devices were widely used.C) Details were sacrificed for the overall effect.D) Eco-friendly materials were employed.Passage TwoQuestions 57 to 61 are based on the following passage.Will the European Union make it? The question would have sounded strange not long ago. Nowdemographic decline and lower growth.As well as those chronic problems, the EU faces an acute crisis in its economic core, the 16 countries that use the single currency. Markets have lost faith that the euro zone?s economies, weaker or stronger, will one day converge thanks to the discipline of sharing a single currency, which denies uncompetitive members the quick fix of devaluation.Yet the debate about how to save Europe?s single currency from disintegration is stuck. It is stuck because the euro zone?s。

数学(新高考)2022届高考考前冲刺卷(三)教师版

数学(新高考)2022届高考考前冲刺卷(三)教师版

(新高考)2022届高考考前冲刺卷数 学 (三)注意事项:1.答题前,先将自己的姓名、准考证号填写在试题卷和答题卡上,并将准考证号条形码粘贴在答题卡上的指定位置。

2.选择题的作答:每小题选出答案后,用2B 铅笔把答题卡上对应题目的答案标号涂黑,写在试题卷、草稿纸和答题卡上的非答题区域均无效。

3.非选择题的作答:用签字笔直接答在答题卡上对应的答题区域内。

写在试题卷、草稿纸和答题卡上的非答题区域均无效。

4.考试结束后,请将本试题卷和答题卡一并上交。

第Ⅰ卷(选择题)一、单项选择题:本题共8小题,每小题5分,共40分.在每小题给出的四个选项中,只有一项是符合题目要求的.1.已知集合{}0,1A =,则集合{},B x y x A y A =-∈∈中元素的个数是( ) A .1个 B .2个 C .3个 D .4个【答案】C【解析】由集合{}0,1A =,{} ,B x y x A y A =-∈∈,根据,x A y A ∈∈,所以1,0,1x y -=-,所以B 中元素的个数是3,故选C . 2.在复平面内,复数5i 2i +对应的点坐标为( )A .()1,2B .()1,2-C .()1,2-D .()1,2--【答案】A 【解析】5i 5i(2i)5(12i)12i 2i (2i)(2i)5-+===+++-,∴在复平面内对应的点坐标为()1,2, 故选A .3.用斜二测画法画水平放置的ABC △的直观图,得到如图所示的等腰直角三角形A B C '''.已知点O '是斜边B C ''的中点,且2O A ''=,则ABC △的面积为( )A .42B .82C .22D .62【答案】B【解析】由斜二测画法可知该三角形ABC 为直角三角形,90ABC ∠=︒, 根据直观图中平行于x 轴的长度不变,平行于y 轴的长度变为原来的一半, 因为2O A ''=,所以4BC =,42AB =,所以三角形ABC 的面积为1442822ABC S =⨯⨯=△,故选B .4.已知函数3()3x xf x x a a -⎛⎫=⋅-⎪⎝⎭,则“1a =”是“函数()f x 为偶函数”的( ) A .充分不必要条件 B .必要不充分条件 C .充要条件D .既不充分也不必要条件【答案】A【解析】函数()f x 定义域为R ,函数()f x 为偶函数,则x ∀∈R ,331()()(3)(3)(33)()0x x xx x x f x f x x a x a x a a a a-----=-⋅--⋅-=-+-=, 而(33)x x x --+不恒为0,因此,10a a-=,解得1a =-或1a =, 所以“1a =”是“函数()f x 为偶函数”的充分不必要条件,故选A .5.已知数列{}n a 满足2112333.3..3n n a a a a n -++++=(n ∈N *),则n a =( )A .13nB .-113nC .13nD .113n + 【答案】C【解析】由题设,2112333 (33)n n a a a a n-++++=①, 则221231133 (33)n n n a a a a ---++++=(2)n ≥②, ①-②得:1113333n n n n a --=-=(2)n ≥, 所以13n n a =(2)n ≥,此卷只装订不密封班级 姓名 准考证号 考场号 座位号由①知113a =也满足上式,故13n n a =(n ∈N *),故选C .6.已知一组数据1x ,2x ,3x ,…,10x 的标准差为2,将这组数据1x ,2x ,3x ,…,10x 中的每个数先同时减去2,再同时乘以3,得到一组新数据,则这组新数据的标准差为( ) A .2 B .4C .6D .32【答案】C【解析】因为数据1x ,2x ,3x ,…,10x 的标准差为2,所以方差为4. 由题意知,得到的新数据为136x -,236x -,336x -,…,1036x -, 这组新数据的方差为24336⨯=,标准差为6,故选C .7.如图,1F 、2F 分别是双曲线()2222:10,0x y C a b a b-=>>的左、右焦点,过1F 的直线l 与C 的左、右两支分别交于点A 、B 两点,若2ABF △为以2F 为直角顶点的等腰直角三角形,则双曲线C 的离心率为( )A .4B .7C .233D .3【答案】D【解析】由题意,2ABF △为等腰直角三角形, 设22AF BF m ==,1AF n =,则2AB m =,由双曲线的定义,可得212AF AF a -=,122BF BF a -=,可得222m n a m n m a-=⎧⎪⎨+-=⎪⎩,解得22m a =,()221n a =-,在12AF F △中,由余弦定理可得222121212212cos F F AF AF AF AF F AF =+-∠,即()()()222224221222221222c a a a a ⎛⎫⎡⎤=-+-⨯-⨯⨯- ⎪ ⎪⎣⎦⎝⎭, 整理得223c a =,即2223c e a==,所以3e =, 故选D .8.已知关于x 的方程22ln (2)x x x k x +=++在1,2⎡⎫+∞⎪⎢⎣⎭上有两解,则实数k 的取值范围为( )A .ln 21,15⎛⎤+ ⎥⎝⎦ B .9ln 21,105⎛⎤+ ⎥⎝⎦C .(]1,2D .(]1,e【答案】B【解析】由已知可得22ln 2x x x k x +-=+在1,2⎡⎫+∞⎪⎢⎣⎭上有两解,令22ln ()2x x x f x x +-=+,1,)2[x ∈+∞, 则问题转化为函数()y f x =与y k =在1[,)2+∞上有两个交点,而2222(2ln 1)(2)(2ln )32ln 4()(2)(2)x x x x x x x x x f x x x --+-+-+--'==++, 令2()32ln 4g x x x x =+--,则22232(21)(2)()23x x x x g x x x x x+--+'=+-==, 因为1,)2[x ∈+∞,所以()0g x '≥恒成立,所以()g x 在1[,)2+∞上单调递增,又(1)0g =,所以当1)[1,2x ∈时,()0g x <,则()0f x '<;当[1,)x ∈+∞时,()0g x '≥,则()0f x '≥,所以()f x 在1[,1)2上单调递减,在[1,)+∞上单调递增,所以min ()(1)1f x f ==,又1112ln 129ln 29ln 2422()()1254210522f +-==+=++, 作出函数()f x 的大致图象如图示:要使得22ln 2x x x k x +-=+在1,2⎡⎫+∞⎪⎢⎣⎭上有两解,实数k 的取值范围为9ln 21,105⎛⎤+ ⎥⎝⎦,故选B .二、多项选择题:本题共4小题,每小题5分,共20分.在每小题给出的选项中,有多项符合题目要求.全部选对的得5分,部分选对的得2分,有选错的得0分.9.一个质地均匀的正四面体表面上分别标有数字1,2,3,4,抛掷该正四面体两次,记事件A 为“第一次向下的数字为偶数”,事件B 为“两次向下的数字之和为奇数”,则下列说法正确的是( ) A .()13P A =B .事件A 和事件B 互为对立事件C .()12P B A =D .事件A 和事件B 相互独立【答案】CD【解析】对于A ,()2142P A ==,可得A 错误; 对于B ,事件B 第一次向下的数字为偶数,第二次向下的数字为奇数, 就可以使得两次向下的数字之和为奇数,可知事件A 和事件B 不是对立事件, 可得B 错误;对于C ,由221()444P AB =⨯=,可得()1()14|1()22P AB P B A P A ===,可得C 正确;对于D 选项,由()2222144442P B =⨯+⨯=,可得()()()P A P B P AB =,可知事件A 和事件B 相互独立,可得D 正确, 故选CD .10.已知函数()()2sin 23cos sin cos f x x x x x =+-,则下列结论正确的是( )A .()f x 的图象关于直线712x π=对称B .()f x 在,42ππ⎡⎤⎢⎥⎣⎦上的值域为[]1,2 C .若()()122f x f x ==,则122x x k π-=,k ∈ZD .将()f x 的图象向右平移6π个单位得()2cos2g x x =-图象【答案】BD【解析】()2223sin cos sin cos 3sin 2cos 22sin 26f x x x x x x x x π⎛⎫=+-=-=- ⎪⎝⎭,对于A :令()721262k k ππππ⨯-=+∈Z ,可得12k =∉Z , 所以直线712x π=不是()f x 的图象的对称轴,故选项A 不正确; 对于B :当,42x ππ⎡⎤∈⎢⎥⎣⎦时,52,636x πππ⎡⎤-∈⎢⎥⎣⎦,1sin 2,162x π⎛⎫⎡⎤-∈ ⎪⎢⎥⎝⎭⎣⎦,所以()[]2sin 21,26f x x π⎛⎫∈ ⎪⎭=-⎝,故选项B 正确;对于C :()f x 的最小正周期为22T ππ==, 所以若()()122f x f x ==,则12x x k π-=,k ∈Z ,故选项C 不正确; 对于D :将()f x 的图象向右平移6π个单位得 ()2sin 22sin 22cos 2662g x x x x πππ⎡⎤⎛⎫⎛⎫=--=-=- ⎪ ⎪⎢⎥⎝⎭⎝⎭⎣⎦的图象,故选项D 正确,故选BD .11.如图,正方体1111ABCD A B C D -的棱长为1,点P 是11B CD △内部(不包括边界)的动点,若BD AP ⊥,则线段AP 长度的可能取值为( )A .233B .65C .62D .52【答案】ABC【解析】在正方体AC 1中,连接AC ,A 1C 1,1111AC B D O =,如图,BD ⊥AC ,BD ⊥AA 1,则BD ⊥平面ACC 1A 1, 因AP ⊥BD ,所以AP ⊂平面ACC 1A 1, 又点P 是△B 1CD 1内部(不包括边界)的动点,连接CO ,平面B 1CD 1平面ACC 1A 1=CO ,所以点P 在线段CO 上(不含点C ,O ), 连接AO ,在等腰△OAC 中,62,2AC AO CO ===,而底边AC 上的高为1,腰OC 上的高1233AC h OC ⋅==,从而有2323AP ≤<,66,52都符合,52不符合,故选ABC .12.若存在正实数x ,y ,使得等式24(3e )(ln ln )0x a y x y x +--=成立,其中e 为自然对数的底数,则a 的取值可能是( ) A .1e - B .31eC .21eD .2【答案】ACD【解析】由题意,a 不等于0,由24(3e )(ln ln )0x a y x y x +--=,得24(3e )ln 0y ya x x+-=,令(0)y t t x =>,则24ln 3e ln t t t a-=-,设2()ln 3e ln g t t t t =-,则23e ()1ln g t t t'=+-, 因为函数()g t '在(0,)+∞上单调递增,且2(e )0g '=,所以当20e t <<时,()0g t '<;当2e t >时,()0g t '>, 则()g t 在2(0,e )上单调递减,在2(e ,)+∞上单调递增, 从而22min ()(e )4e g t g ==-,即244e a -≥-,解得21ea ≥或0a <, 故21(,0),e a ⎡⎫∈-∞+∞⎪⎢⎣⎭,故选ACD .第Ⅱ卷(非选择题)三、填空题:本大题共4小题,每小题5分.13.已知向量12=+a e e ,213=-b e e ,其中1e ,2e 为单位向量,向量1e ,2e 的夹角为120°,则⋅=a b __________. 【答案】1-【解析】由21111cos1202⋅=⨯⨯︒=-e e ,有221212231131⋅=-⋅-=+-=-e e e e a b , 故答案为1-.14.在ABC △中,a ,b ,c 分别是角A ,B ,C 的对边,记ABC △外接圆半径为R ,且()222sin sin (2)sin R A B a c C -=-,则角B 的大小为________.【答案】4π(或45︒) 【解析】由正弦定理2sin sin sin a b cR A B C ===,故2sin R A a =,2sin R B b =,即()222sin sin (2)sin sin sin (2)sin R A B a c C a A b B a c C -=-⇔-=-22222(2)2a b a c c a c b ac ⇔-=-⇔+-=,故2222cos 22a cb B ac +-==, 又(0,)B π∈,故4B π=,故答案为4π.15.将字母a ,A ,b ,B ,c ,C 排成一列,则仅有一组相同字母的大小写相邻的排法种数为__________.【答案】288【解析】首先讨论Aa 相邻,剩下的4个字母排列有如下情况: bcBC 、cbCB 、bCBc 、CbcB 、BcbC 、cBCb 、BCbc 、CBcb 共8种可能,任取8种中的一种与Aa 组合,共有125210C A =种,此时Aa 相邻共有10880⨯=种,bcCB ,bCcB ,BcCb ,BCcb ,CbBc ,CBbc ,cbBC ,cBbC ,8种情况,任取8种中的一种与Aa 组合,共有222A =种,此时Aa 相邻共有2816⨯=种,所以Aa 相邻共有96种;同理,Bb 相邻共有96种,Cc 相邻共有96种,所以共有288种, 故答案为288.16.如图,点P 是半径为2的圆O 上一点,现将如图放置的边长为2的正方形ABCD (顶点A 与P 重合)沿圆周逆时针滚动.若从点A 离开圆周的这一刻开始,正方形滚动至使点A 再次回到圆周上为止,称为正方形滚动了一轮,则当点A 第一次回到点P 的位置时,正方形滚动了________轮,此时点A 走过的路径的长度为__________.【答案】3,(22)π+【解析】正方形滚动一轮,圆周上依次出现的正方形顶点为B C D A →→→, 顶点两次回到点P 时,正方形顶点将圆周正好分成六等分, 由4和6的最小公倍数:342612⨯=⨯=, 所以到点A 首次与P 重合时,正方形滚动了3轮. 这一轮中,点A 路径A A A A ''→'→→是圆心角为6π,半径分别为2,22,2的三段弧,故路径长(22)(2222)63l ππ+=⋅++=,∴点A 与P 重合时总路径长为(22)π+. 故答案为3,(22)π+.四、解答题:本大题共6个大题,共70分.解答应写出文字说明、证明过程或演算步骤.17.(10分)ABC △内角A ,B ,C 所对的边分别为a ,b ,c ,已知(cos cos )b c a B C +=+. (1)求A ;(2)若sin sin 2sin A C B +=,求sin sin B C +. 【答案】(1)2π;(2)75. 【解析】(1)在ABC △中,由正弦定理及(cos cos )b c a B C +=+, 得sin sin sin (cos cos )B C A B C +=+,于是得sin()sin()sin cos sin cos A C A B A B A C +++=+,化简整理得cos sin cos sin 0A C A B +=,即cos (sin sin )0A C B +=, 而sin 0,sin 0B C >>,则cos 0A =, 又0A π<<,所以2A π=.(2)因为sin sin 2sin A C B +=,由正弦定理得2a c b +=,则21c ba a+=, 由(1)知,在ABC Rt △中,2BAC π∠=,222b c a +=,即221b c a a ⎛⎫⎛⎫+= ⎪ ⎪⎝⎭⎝⎭,于是解得43,55b c a a ==, 显然有sin ,sin b c B C a a ==,即43sin ,sin 55B C ==,则7sin sin 5B C +=,所以7sin sin 5B C +=.18.(12分)已知等差数列{}n a 的前n 项和为n S ,又对任意的正整数,m n ,都有2n ma a n m-=--,且530S =. (1)求数列{}n a 的通项公式; (2)设22n a n b =,求数列{}n b 的前n 项和n T .【答案】(1)122n a n =-;(2)()656426612(6)n n n n T n --⎧-≤=⎨+>⎩.【解析】(1)设等差数列{}n a 的公差为d ,因为2n m a a n m -=--,所以112(1)(1)a da n n m d md +--=--=--, 又530S =,即1545(2)302a ⨯+⨯-=,解得110a =,所以122n a n =-.(2)由(1)知122n a n =-,令602n an =-≥,得6n ≤,当6n ≤时,0n a ≥,从而122554662662121222222642222112n n a a n nn a n T ---⎡⎤⎛⎫-⎢⎥ ⎪⎝⎭⎢⎥⎣⎦=++⋅⋅⋅==++-=++=--,当6n >时,671254222262012222222222n n a a a a a n T ---=++⋅⋅⋅+++⋅⋅⋅+=++++++652(12)6361212n n ---=+=+-,综上得()656426612(6)n n n n T n --⎧-≤=⎨+>⎩. 19.(12分)如图,在四棱锥P ABCD -中,底面ABCD 为矩形,平面PCD ⊥平面ABCD ,AB =2,BC =1,2PC PD ==,E 为PB 中点.(1)求证:PD //平面ACE ; (2)求二面角E AC D --的余弦值;(3)在棱PD 上是否存在点M ,使得AM ⊥BD ?若存在,求PMPD的值;若不存在,说明理由.【答案】(1)证明见解析;(2)66-;(3)存在,12.【解析】(1)设BD 交AC 于点F ,连接EF . 因为底面ABCD 是矩形,所以F 为BD 中点. 又因为E 为PB 中点,所以EF //PD , 因为PD ⊄平面ACE ,EF ⊂平面ACE , 所以PD //平面ACE .(2)取CD 的中点O ,连接PO ,FO .因为底面ABCD 为矩形,所以BC ⊥CD .因为PC =PD ,O 为CD 中点,所以PO ⊥CD ,OF ∥BC ,所以OF ⊥CD . 又因为平面PCD ⊥平面ABCD ,PO ⊂平面PCD ,平面PCD ∩平面ABCD =CD , 所以PO ⊥平面ABCD .如图,建立空间直角坐标系O −xyz ,则()1,1,0A -,C (0,1,0),B (1,1,0),P (0,0,1),111,,222E ⎛⎫⎪⎝⎭,设平面ACE 的法向量为(,,)x y z =m ,(1,2,0)AC =-,131(,,)222AE =-,20131222AC x y AE x y z ⎧⋅=-+=⎪⎨⋅=-++=⎪⎩m m , 令1y =,则2x =,1z =-,所以(2,1,1)=-m , 平面ACD 的法向量为(0,0,1)OP =,6cos ,6||||OP OP OP ⋅<>=-⋅m m m ,如图可知二面角E −AC −D 为钝角,所以二面角E −AC −D 的余弦值为66-.(3)假设存在棱PD 上的点M ,使得AM ⊥BD ,设,01PM PD λλ=<<,又()0,1,0D -,则(1,2,0)BD =--,(1,1,1)AP =-,()0,1,1PD =--,()1220AM BD AP PM BD AP BD PD BD λλ∴⋅=+⋅=⋅+⋅=-+=,解得12λ=, 故存在棱PD 上的点M ,使得AM ⊥BD ,12PM PD =.20.(12分)某健身机构统计了去年该机构所有消费者的消费金额(单位:元),如图所示:(1)将去年的消费金额超过3200元的消费者称为“健身达人”,现从所有“健身达人”中随机抽取2人,求至少有1位消费者,其去年的消费金额超过4000元的概率;(2)针对这些消费者,该健身机构今年欲实施入会制.规定:消费金额为2000元、2700元和3200元的消费者分别为普通会员、银卡会员和金卡会员.预计去年消费金额在(]0,1600、(]1600,3200、(]3200,4800内的消费者今年都将会分别申请办理普通会员、银卡会员和金卡会员.消费者在申请办理会员时,需一次性预先缴清相应等级的消费金额.该健身机构在今年年底将针对这些消费者举办消费返利活动,预设有如下两种方案:方案1:按分层抽样从普通会员,银卡会员,金卡会员中总共抽取25位“幸运之星”给予奖励.其中,普通会员、银卡会员和金卡会员中的“幸运之星”每人分别奖励500元、600元和800元.方案2:每位会员均可参加摸奖游戏,游戏规则如下:从一个装有3个白球、2个红球(球只有颜色不同)的箱子中,有放回地摸三次球,每次只能摸一个球.若摸到红球的总数为2,则可获得200元奖励金;若摸到红球的总数为3,则可获得300元奖励金;其他情况不给予奖励.如果每位普通会员均可参加1次摸奖游戏;每位银卡会员均可参加2次摸奖游戏;每位金卡会员均可参加3次摸奖游戏(每次摸奖的结果相互独立).以方案的奖励金的数学期望为依据,请你预测哪一种方案投资较少?并说明理由.【答案】(1)1933;(2)方案2投资较少,理由见解析.【解析】(1)记“在抽取的2人中至少有1位消费者在去年的消费超过4000元”为事件A.由图可知,去年消费金额在(]3200,4000内的有8人,在(]4000,4800内的有4人,消费金额超过3200元的“健身达人”共有8412+=(人),从这12人中抽取2人,共有212C种不同方法,其中抽取的2人中至少含有1位消费者在去年的消费超过4000元,共有112844C C C+种不同方法,所以()112844212C C C19C33P A+==.(2)方案1按分层抽样从普通会员,银卡会员,金卡会员中总共抽取25位“幸运之星”,则“幸运之星”中的普通会员、银卡会员、金卡会员的人数分别为820257100+⨯=,25352515100+⨯=,12253100⨯=,按照方案1奖励的总金额为1750015600380014900ξ=⨯+⨯+⨯=(元).方案2设η表示参加一次摸奖游戏所获得的奖励金,则η的可能取值为0,200,300.由题意,每摸球1次,摸到红球的概率为1215C2C5P==,所以()302101333232810C C5555125Pη⎛⎫⎛⎫⎛⎫⎛⎫==+=⎪ ⎪ ⎪ ⎪⎝⎭⎝⎭⎝⎭⎝⎭,()12233236200C55125Pη⎛⎫⎛⎫===⎪ ⎪⎝⎭⎝⎭,()0333328300C55125Pη⎛⎫⎛⎫===⎪ ⎪⎝⎭⎝⎭,所以η的分布列为:η0 200 300P81125361258125数学期望为81368020030076.8125125125E η=⨯+⨯+⨯=(元), 按照方案2奖励的总金额为()22860212376.814131.2ξ=+⨯+⨯⨯=(元), 因为由12ξξ>,所以施行方案2投资较少.21.(12分)已知椭圆()2222:10x y E a b a b +=>>的离心率为32,P 为椭圆E 上一点, Q 为圆222x y b +=上一点,PQ 的最大值为3(P ,Q 异于椭圆E 的上下顶点).(1)求椭圆E 的方程;(2)A 为椭圆E 的下顶点,直线AP ,AQ 的斜率分别记为1k ,2k ,且214k k =,求证:直线PQ 过定点,并求出此定点的坐标.【答案】(1)2214x y +=;(2)证明见解析,定点(0,1). 【解析】(1)解:由椭圆E 的离心率为32,可得32c a =,又由PQ 的最大值为3,可得3a b +=,可得222332a b ca abc +=⎧⎪⎪=⎨⎪=+⎪⎩,解得2,1,3a b c ===,所以椭圆E 的方程为2214x y +=.(2)解:由(1)可得点A 的坐标为(0,1)-, 因为直线,AP AQ 的斜率分别记为1k ,2k ,且214k k =,可得直线AP 的方程为11y k x +=,直线AQ 的方程为2114y k x k x +==,联立方程组122114y k x x y =-⎧⎪⎨+=⎪⎩,整理得2211(41)80k x k x +-=,解得0x =或121841k x k =+, 将121841k x k =+代入11y k x =-,可得2111221184114141k k y k k k -=⋅-=++, 即2112211841(,)4141k k P k k -++;联立方程组122411y k x x y =-⎧⎨+=⎩,整理得2211(161)80k x k x +-=,解得0x =或1218161k x k =+, 将1218161k x k =+代入141y k x =-,可得2121161161k y k -=+,即21122118161(,)161161k k Q k k -++, 则()22112222221111112111122112121111614116141(161)(41)(161)(41)888(224141)16141812PQk k k k k k k k k k k k k k k k k k k ---++-+-+-==--+=-+=⨯-, 所以直线PQ 的方程为21122111418141441k k y x k k k ⎛⎫--=-- ⎪++⎝⎭, 即2211222111111414112111441414414k k y x x x k k k k k k -+=-++=-+=-++++,此时直线过定点(0,1),即直线PQ 恒过定点(0,1).22.(12分)已知()()ln 1f x x ax a =++∈R ,()f x '为()f x 的导函数. (1)若对任意0x >都有()0f x ≤,求a 的取值范围;(2)若120x x <<,证明:对任意常数a ,存在唯一的()012,x x x ∈,使得()()()12012f x f x f x x x -'=-成立.【答案】(1)(],1-∞-;(2)证明见解析. 【解析】(1)由()0f x ≤,得ln 1ax x ≤--,即ln 1x a x+≤-, 令()ln 1x g x x +=-,则()2ln xg x x'=, ∴当()0,1x ∈时,()0g x '<;当()1,x ∈+∞时,()0g x '>,()g x ∴在()0,1上单调递减,在()1,+∞上单调递增,()()min 11g x g ∴==-,1a ∴≤-,即a 的取值范围为(],1-∞-.(2)设()()()()1212f x f x h x f x x x -'=--,将问题转化为()h x 在区间()12,x x 上有唯一的零点,由()()()()1211221212ln ln 1f x f x x ax x ax h x f x a x x x x x -+--'=-=+---,知()h x 在区间()12,x x 上单调递减,故函数()h x 在区间()12,x x 上至多有1个零点,()1122122211121121211ln ln ln ln 1111ln x ax x ax x x x x h x a x x x x x x x x x x ⎛⎫+---=+-=-=-+ ⎪---⎝⎭, ()1122121222122121221ln ln ln ln 1111ln x ax x ax x x x x h x a x x x x x x x x x x ⎛⎫+---=+-=-=-+ ⎪---⎝⎭,由(1)知:当1a =-时,ln 10x x -+≤(当且仅当1x =时取等号),120x x <<,211x x ∴>,2211ln 10x xx x ∴-+<, 又120x x -<,即1210x x <-,()10h x ∴>, 120x x <<,1201x x ∴<<,1122ln 10x xx x ∴-+<,即2112ln 10x x x x +->, 又120x x -<,即1210x x <-,()20h x ∴<, 由函数零点存在定理知:()h x 在区间()12,x x 上有唯一的零点,即存在唯一的()012,x x x ∈,使得()()()12012f x f x f x x x -'=-成立.。

辽宁省实验中学2023-2024学年高三下学期考前练习语文试卷

辽宁省实验中学2023-2024学年高三下学期考前练习语文试卷

2024年全国高考冲刺压轴卷(六)语文注意事项:1.本卷满分150分,考试时间150分钟。

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写在试题卷、草稿纸和答题卡上的非答题区域均无效。

4.考试结束后,请将本试题卷和答题卡一并上交。

一、现代文阅读(35分)(一)现代文阅读Ⅰ(本题共5小题,18分)阅读下面的文字,完成1~5题。

材料一:什么是文艺工作中的普及和提高呢?这两种任务的关系是怎样的呢?普及的东西比较简单浅显,因此也比较容易为目前广大人民群众所迅速接受。

高级的作品比较细致,因此也比较难于生产,并且往往比较难于在目前广大人民群众中迅速流传。

现在工农兵面前的问题,是他们正在和敌人作残酷的流血斗争,而他们由于长时期的封建阶级和资产阶级的统治,不识字,无文化,所以他们迫切要求一个普遍的启蒙运动,迫切要求得到他们所急需的和容易接受的文化知识和文艺作品,去提高他们的斗争热情和胜利信心,加强他们的团结,便于他们同心同德地去和敌人作斗争。

对于他们,第一步需要还不是“锦上添花”,而是“雪中送炭”。

所以在目前条件下,普及工作的任务更为迫切。

轻视和忽视普及工作的态度是错误的。

但是,普及工作和提高工作是不能截然分开的。

不但一部分优秀的作品现在也有普及的可能,而且广大群众的文化水平也在不断地提高。

普及工作若是永远停止在一个水平上,一月两月三月,一年两年三年,总是一样的货色,一样的“小放牛”①,一样的“人、手、口、刀、牛、羊”②,那么,教育者和被教育者岂不都是半斤八两?这种普及工作还有什么意义呢?人民要求普及,跟着也就要求提高,要求逐年逐月地提高。

在这里,普及是人民的普及,提高也是人民的提高。

2023上半年-国产操作系统(麒麟)安全管理师(初级)考前冲刺题A3卷

2023上半年-国产操作系统(麒麟)安全管理师(初级)考前冲刺题A3卷

2023上半年国产操作系统(麒麟)安全管理师(初级)考前冲刺题A3卷1.【单选题】最终的进程优先级共多少级,称为基本优先级( )。

A:30级B:32级C:16级D:28级正确答案:B答案解析:进程优先级共 32 级,是从 0 到 31 的数值2.【单选题】多路径的优点主要是( )。

A:冗余B:改进性能C:冗余和改进性能D:便于使用正确答案:C答案解析:多路径的优点主要是冗余和改进性能。

3.【单选题】软件的( )可以作为软件唯一性特征,可以作为软件白名单关键要素。

A:SM3值B:绝对路径C:相对路径D:名称正确答案:A答案解析:SM3是国密哈希算法,可以作为软件唯一性特征,可以作为软件白名单关键要素。

4.【单选题】静态度量机制能够防御( )。

A:已知恶意程序B:既能够防御已知恶意程序,也能防御未知恶意程序C:未知恶意程序D:系统漏洞正确答案:B答案解析:静态度量机制既能够防御已知恶意程序,也能防御未知恶意程序。

5.【单选题】漏洞管理的5个过程是漏洞预警、漏洞检测、( )、漏洞修复和漏洞审计。

A:风险管理B:漏洞挖掘C:漏洞补丁D:系统漏洞正确答案:A答案解析:漏洞管理的5个过程是漏洞预警、漏洞检测、风险管理、漏洞修复和漏洞审计。

6.【单选题】麒麟采取的漏洞定级标准是( )。

A:CVSS 3.0B:CVSS 2.0C:CVSS 3.2D:CVSS 3.1正确答案:D答案解析:麒麟采取的漏洞定级标准是CVSS 3.1。

7.【单选题】社会工程学的( )等属于信息系统的安全威胁。

A:拒绝服务攻击B:内部人员威胁C:特洛伊木马D:ARP欺骗、IP源地址欺骗正确答案:B8.【单选题】商用密码能否用于保护国家秘密信息( )。

A:可以B:不可以C:特定行业可以D:根据需要确定正确答案:B答案解析:商用密码不用于保护国家秘密信息。

9.【单选题】在麒麟操作系统中,安全中心的哪个功能模块可以实现一键安全加固与还原( )。

人教版六年级小升初《数学考前冲刺卷》含答案解析

人教版六年级小升初《数学考前冲刺卷》含答案解析

2022年小升初冲刺模拟测试数学试题学校________ 班级________ 姓名________ 成绩________(时间:90分钟满分:100分)一、填一填:1.350580000改成”万”作单位是________万;省略亿位后面的尾数是________亿。

2.658-________=215 ________+256 = 965 ________-125=29457+________=654 ________+261=975 618-________=256________-258=159 246+________=589 ________+148=742512-________=259 ________-201=125 456+________=545________+325=561 641-________=365 ________-158=3693.超市有70多个鸡蛋,如果4个装一排,多了2个;如果6个装一排,也多了2个,超市有________个鸡蛋。

________=________%=0.84.________:10 =20()5.0.06升=________毫升6.由2个一和6个百分之一组成的数是________;0.8里面有________个百分之一。

7.1,10,2,9,3,8,________,________,…8.一本书有a页,如果每天看5页,看了x天后,剩下________页没看。

二、选一选:9.下列各数中,与3.06大小相等的是()A. 3.306B. 0.306C. 3.060D. 3006010.在100米短跑比赛中,小芳用了18.7秒,小英用了19.1秒,()跑得快。

A. 小英B. 小芳C. 无法判断11.用一副三角尺像下图那样拼,这个角是()度。

A. 150°B. 135°C. 120°D. 180°12.一个数(0除外)乘真分数,所得的积()A. 大于这个数B. 等于这个数C. 小于这个数D. 无法确定13.一个正方体的表面积是96cm2,则这个正方体的体积是()。

6级考前冲刺试题三含答案

6级考前冲刺试题三含答案

6级考前冲刺试题三Part I Writing (30 minutes)Directions:For this part, you are allowed 30 minutes to write a short essay entitled Can Knowledge Change One’s Destiny?You should write at least 150 words following the outline givenbelow.1. 有人相信知识能改变命运2. 有人则认为当今社会光靠知识已经很难改变命运3. 我认为……Can Knowledge Change One’s Destiny?________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________Part II Reading Comprehension (Skimming and Scanning) (15 minutes)Directions: In this part, you will have 15 minutes to go over the passage quickly and answer the questions on Answer Sheet 1. For questions 1-7, choose the best answer from the fourchoices marked A), B), C) and D). For questions 8-10, complete the sentences with theinformation given in the passage.Comparing Y ourself to Others: It’s Not All Bad“To compare is to despair,” the saying goes, and I‟ve generally found it to be true. If I try hard enough (and sometimes even if I don‟t) I can usually find someone who performs better or has more. And I can feel bad about it.I objectively know that my own life is pretty good, but this upward comparison, as economists and psychologists call it, can somehow dim my own accomplishments. “Comparison is rife with danger, but it‟s understandable why we do it,” said Heidi Grant Halvorson, a social psychologist. “We‟re human beings and we naturally seek information.”One way to get information, Ms. Halvorson said, is to turn to experts. Another way is to look at those around us.And often what we see in our neighborhood or community is more important, in our minds, than anything else. Economic studies have shown, for example, that once they make a certa in amount of money to cover basics, most people care more about relative, rather than absolute, income. That is, most of us feel better if we make, say, $100,000 if the majority of our neighbors make $75,000 than if we earn $150,000 when most of our friends bring in $200,000.One such study, “Neighbors as Negatives: Relative Earnings and Well-Being,” published in 2005 in The Quarterly Journal of Economics, found that “higher earnings of neighbors were associated with lower levels of self-reported happiness.” The paper cites the oft-quoted saying by the economist and philosopher John Stuart Mill: “Men do not desire to be rich, but to be richer than other men.”Erzo F. P. Luttmer, the author of the study and an associate professor of economics at Dartmouth Col lege, said in a telephone interview that neighbors “influence what you think is a normal lifestyle, and you struggle to keep up.”We‟re often told to avoid comparing, but this is both difficult and not necessarily wise advice in all situations.Ms. Halvors on, who is also author of the book “Succeed: How We Can Reach Our Goals” (Hudson Street Press, 2010), said we needed to think about why we were seeking the information. “Upward comparison can be punishing and make you feel terrible,” she said. “But you can also lookupward to learn.”If we feel bad, for example, about how well we just played in a game of tennis, we can check out those who play worse to make ourselves feel better, and avoid watching the semi-pros on the other court. Or, if we believe that we can improve and learn by looking at others — and not just feel inferior about playing worse — then we can watch the better players.There are also pros and cons to comparing ourselves with people worse off than ourselves. It‟s not good if we‟re just tryin g to gain a sense of superiority or avoiding challenging ourselves to do better. But such downward comparisons can remind us of our own fortune. They can also help us when we think about the things we regret but we cannot change.As part of a study co-written by Isabelle Bauer, a clinical psychologist in Toronto, 104 people of various ages were asked to complete a survey about their greatest misgivings — choosing the wrong career path, or failing to make amends to someone who passed away or marrying the wro ng person.The study found that those who felt that other people had regrets that were “more” or “much more” severe reported an increase in positive emotions when reassessed four months later compared with those who said that other people‟s regrets were “less” or “much less” severe.“If you can‟t change what you did, then downward social comparison helps us gain perspective,” Ms. Bauer said. “And those people are able to move on and re-engage in other goals. If you compare upward about things you can‟t change, then you seem to just feel stuck.” But those who compared themselves downward and had the opportunity to do something about their regrets didn‟t feel any more positive over time, she said.Comparisons can also serve as a reality check, particularly when speaking about money.My colleague Ron Lieber, for example, wrote about NetworthIQ, a site that allows people to anonymously post their own net worth. Would we be happier and healthier, he asked readers, if we knew the net worth of our friends, colleagues and neighbors?The overwhelming response was no. As one commenter put it: “I am sickened by the idea of calculating one‟s …net worth‟ in terms of money. It‟s good to have savings and it‟s good to have a nest in which one can nestle when one exceeds productive years. However, to express your worth in terms of the …how much?‟ question is one more step toward dehumanization. I‟d rather figure out my net worth in terms of how much I am worth to the world in which I live.”Not everyone feels that way, of course, and plenty of people have posted their profiles on .ING Retirement, a United States-based division of the Dutch financial services group, a few years ago introduced , which allows you to anonymously type in your profile —your age, income, gender and marital status.Then you answer some personal finance questions, like the amount of money you‟ve put asidefor retirement, your mortgage payments, what you think you‟ll need to save to retire comfortably and so on. Y ou are then instantly compared with your peers.I answered some of the questions and seemed pretty average. I guess I was pleased our retirement savings were slightly higher than those of the other 1,071 people who answered the question with a similar profile, but I also wasn‟t sure if I should be. Might it just mean that all of us are saving too little? Was I getting a false sense of security?Not at all, said Denis-Martin Monty, vice president of emerging product development at ING Retirement. Rather, it is a useful tool to get us to think about things we often don‟t want to —like how much (or little) we‟ve put away for retirement.The site was initially tested among 28,000 employees of ING‟s larger clients. When asked at the end of the survey, 64 percent of those who measured themselves chose to take some sort of positive action, like enroll in a retirement plan or increase their savings rate.Mr. Monty also pointed out that studies show that most of us think we‟re above average, what he called the Lake Wobegon effect.“We tend to overestimate where we stand in comparison to other people,” he said. So people aren‟t necessarily looking at how much more they‟re actually saving than other people, he said, but how much more they thought they were saving.The site recently hit the million-user mark, Mr. Monty said.David Laibson, a professor of economics at Harvard University, who has looked at the impact of providing peer information on retirement savings decisions (it can be helpful, but not always) agreed that such comparisons can serve a purpose.“Comparisons to large groups of peers are often useful,” he said. “It‟s never the final word on what I should do, but it does give me food for thought.”I doubt most of us are ever going to stop comparing ourselves with others. The most important point to keep in mind, however, is as Ms. Halvorson said: “There‟s a lot of imperfect comparison going on. We never see the whole picture.”1. What is Heidi Grant Halvorson‟s view of comparison?A) It highlights people‟s achievemen ts in some way.B) It can be accepted as a way of getting information.C) It should be blamed for causing hopelessness.D) It makes people feel satisfied with their own life.2. According to economic studies, what do most people do when they are able to meet their basic need?A) They are more interested in relative income.B) They devote themselves to community causes.C) They desire to become richer and richer.D) They associate their happiness with their income.3. The author said the advice that people should avoid comparing is _______.A) sensible B) constructive C) unwise D) impossible to follow4. What is the advantage of upward comparison according to Ms. Halvorson?A) It can lighten people‟s mood. C) It gains people a sense of superiority.B) It motivates people to improve. D) It helps people get rid of bad habits.5. What did the study co-written by Isabella Bauer reveal?A) People tend to compare themselves with those worse off.B) Most people make wrong decisions in their whole life.C) Downward comparison makes people feel more positive.D) Upward comparing is more helpful than downward comparing.6. If there is nothing people can do about their regrets, Ms. Bauer suggested that people _______.A) reflect on their failures alone C) look at the past to gain a perspectiveB) look upward to learn and improve D) make downward social comparison7. According to Ron Lieber‟s article, many people thought that knowing the net worth of others _______.A) helped check their spending C) was the source of their miseryB) had influenced their lifestyle D) would not make them happier8. Finding her retirement savings were a little more than her peers, the author doubted if she was getting a wrong ______________________________.9. Denis-Martin Monty said that people tend to ______________________________ their position when comparing themselves to other people.10. According to David Laibson, comparing with large groups of peers helps because it gives people______________________________.Part III Listening Comprehension(35 minutes)Section ADirections: In this section, you will hear 8 short conversations and 2 long conversations. At the end of each conversation, one or more questions will be asked about what was said. Both theconversation and the questions will be spoken only once. After each question there will be apause. During the pause, you must read the four choices marked A), B), C) and D), anddecide which is the best answer. Then mark the corresponding letter on Answer Sheet 2with a single line through the centre.11. A) He doesn‟t have any good ideas. C) He doesn‟t put his ideas into practice.B) He has many interesting dreams. D) He sleeps a lot without doing anything.12. A) He has just quitted his former job. C) He is applying for a job.B) He has graduated last June. D) He has some work experience.13. A) His boss doesn‟t agree.C) He has chosen some part-time courses.B) He has to pay the tuition fee first. D) He can‟t afford to study without salary.14. A) He is a full-time student.B) He is a part-time worker.C) He is going to take refresher courses.D) He has known all the details about the course.15. A) He knows nothing about the other assignment.B) He doesn‟t think it‟s necessary to ask for a long time.C) He asks the woman to hand in her assignment on time.D) He will give the woman an extension for her assignment.16. A) He was arrogant about it. C) He was not surprised about it.B) He found it unbelievable. D) He found the truth unacceptable.17. A) To ask the man to read the book together.B) To request the man to write a term paper for her.C) To complain about the numbers of reading materials.D) To ask for some advice on how to select the reading materials.18. A) He had better assess his own ability.B) He should try to solve some easier problems now.C) He must study hard to solve the difficult problems.D) He should find some more complicated problems to solve.Questions 19 to 22 are based on the conversation you have just heard.19. A) She has finished her work. C) Her kids will arrive home after school.B) She is too exhausted to work. D) The man does not ask her to go back to the office.20. A) It is weird. C) It is comfortable.B) It is convenient. D) It is exhausting.21. A) The woman does not like it. C) One can see a lot of strange things in it.B) It is produced by weird people. D) The man is determined to watch it tonight.22. A) His boss might ask him to stay up late.B) The woman will record tonight‟s program.C) He may have to prepare for tomorrow‟s business trip.D) He will be having a meeting with his boss at that time.Questions 23 to 25 are based on the conversation you have just heard.23. A) He has a lot of free time. C) Many of his friends are actors.B) She knows he likes acting. D) He‟s looking for an acting job.24. A) He hasn‟t been in a play for a long time.B) He has to rearrange his evening schedule.C) He might not like the way the group works.D) His schoolwork has taken up most of his time.25. A) Enjoy their rehearsal. C) See her on Wednesday.B) Learn his part quickly. D) Pick her up on Thursday.Section BDirections:In this section, you will hear 3 short passages. At the end of each passage, you will hear some questions. Both the passage and questions will be spoken only once. Afteryou hear a question, you must choose the best answer f rom the four choices markedA), B), C) and D). Then mark the corresponding letter on Answer Sheet 2with asingle line through the centre.Passage OneQuestions 26 to 28 are based on the passage you have just heard.26. A) A study on whether social connections can keep us healthier.B) A study on whether social connections make us happier.C) A study on factors that influence psychologic health.D) A study on the relationship between psychology and longevity.27. A) 200,000. B) 300,000. C) 500,000. D) 700,000.28. A) Teenagers should go to see psychologist frequently.B) People should make as many friends as possible.C) Policy makers should consider relationships as a health issue.D) People should place relationships at first place.Passage TwoQuestions 29 to 31 are based on the passage you have just heard.29. A) Y our reputation will be damaged. C) Y ou‟ll get into trouble.B) Y ou have to change your name. D) Y ou can‟t be a doctor any more.30. A) He had helped Booth murder Lincoln. C) He had concealed the facts.B) He had made a diagnostic error. D) He had given Booth help in some way.31. A) He would have suffered a lot from the name.B) He would have been thought of as a criminal forever.C) He would have been sentenced to four years‟ prison life.D) He would have spent the rest of his life in prison.Passage ThreeQuestions 32 to 35 are based on the passage you have just heard.32. A) Japanese car sales are down.B) Economy in Japan is from bad to worse.C) The main consumers of cars in Japan are middle-aged people.D) Japan is heavily depended on the foreign market.33. A) A tool. C) A symbol of status.B) A sign of wealth. D) An article of consumption.34. A) Cars are still too expensive. C) Gas prices and parking lot fees are costly.B) Traffic is heavy on the road. D) Traffic accidents are more and more serious.35. A) They have reduced their products prices.B) They have laid off plenty of short-term contract workers.C) They have laid off many full-time salaried employees.D) They have narrowed down their foreign market.Section CDirections:In this section, you will hear a passage three times. When the passage is read for the first time, you should listen carefully for its general idea. When the passage is read for thesecond time, you are required to fill in the blanks numbered from 36 to 43 with the exactwords you have just heard. For blanks numbered from 44 to 46 you are required to fill inthe missing information. For these blanks, you can either use the exact words you havejust heard or write down the main points in your own words. Finally, when the passage isread for the third time, you should check what you have written.Although they may not die from lack of love, adults also need a great amount of affection and (36) _________. In the past, many people spent their (37) _________ lives in the communities in which they were born and (38) _________. Many more people continued to live with their parents, brothers and sisters after they were married and had children of their own. By remaining in (39) _________ communities with relatives nearby, families had enough (40) _________ for friendly contact and support in time of trouble.Recent studies (41) _________ that family arrangements in Western societies have not changed as much in the last few centuries as is (42) _________ believed. Y et most sociologists agree that in modern societies, there are fewer opportunities for friendship and support from relatives outside the (43) _________ family. Parents and children often live apart from other relatives, and seldom visit them. Also, (44) ___________________________________________________________________. Together, loneliness and mobility force immediate family members to depend heavily on one another for affection and companionship.(45) ___________________________________________________________________, a high percentage of people continue to marry, even though it is possible for a single man and woman to live together without marrying. On the other hand, because affection and companionship have become so important, (46) ___________________________________________________________________ —even if all other family functions are being satisfactorily performed, and in this sense, affection and companionship have become the touchstone of the modern family.Part IV Reading Comprehension (Reading in Depth) (25 minutes)Section ADirections:In this section, there is a short passage with 5 questions or incomplete statements. Read the passage carefully. Then answer the questions or complete the statements in the fewestpossible words. Please write your answers on Answer Sheet 2.Questions 47 to 51 are based on the following passage.Schools looking to ban cell phones may have a new excuse: a growing number of people are developing an allergy (过敏) to metal in the devices. We all know that food allergies are on the rise — a study last year placed the rate at 1 per 70 children, compared with 1 in 250 in the 1970s. But at last month‟s meeting of the American College of Allergy, Asthma & Immunology, allergists reported that many substances that once seemed harmless are now leading to allergic reactions too.Allergies can develop when young bodies come into contact with a new substance, and an increasing number of kids have early exposure to tech tools and “adult” products that can lead to a lifetime of reactions. For instance, the nickel hardware often used on phone trim and faceplates can lead to red, itchy(发痒的) skin where the phone is pressed against the face of someone who developed a nickel allergy at a young age. It‟s especially problematic for women, says Luz Fonacier, an allergist who presented at the conference. Y oung girls are often first exposed to nickel when theyget their ears pierced, and therefore are more likely to develop a sensitivity to the metal that can cause allergic reactions later on.Temporary tattoos (刺青) could be another new allergy trigger. They share a coloring matter used in hair dyes, which can lead to problems down the line. “Y ou might have kids developing the sensitivity now, and then finding out only when they‟re much older and decide to dye their hair, then have an attack,” says Fonacier. Foods that were once considered low risk, like pumpkin, are now causing some allergic reactions too.So what‟s behind all these new allergens? Some researchers believe that as humans live in cleaner, safer, more disease-free environments, the immune system —given less to do thanks to antibiotics and Clorox — turns on substances once considered safe. Others note that children are being exposed to more and more new foods and foreign substances at earlier ages, which could up the chances of developing a sensitivity. To be safe, Fonacier recommends that children avoid piercing until after age 10. And it‟s all just another reason to keep those cell phones and temporary tats away from young hands.47. Allergists said some allergic reactions are now caused by many substances once considered_____________________.48. Phone trim with nickel can lead to allergic reactions if the phone user _____________________ tonickel at a young age.49. Temporary tattoos could _____________________ allergy because of a coloring mattering theycontain.50. According to some researchers, humans‟ _____________________ is becoming sensitive to somesubstances due to the use of antibiotics and Clorox.51. To reduce the chance of developing a sensitivity, children are advised to _____________________before 10.Section BDirections:There are 2 passages in this section. Each passage is followed by some questions or unfinished statements. For each of them there are four choices marked A), B), C) and D).You should decide on the best choice and mark the corresponding letter on Answer Sheet2 with a single line through the centre.Passage OneQuestions 52 to 56 are based on the following passage.Researchers at the University of California-Berkeley are challenging our long-held belief that humans are hard-wired to be selfish. Darwin‟s theory of evolution by natural selection was misinterpreted by his male popularizers, the researchers say. Rather than “every man for himself”, Darwin believed that humans are successful as a species precisely because of our nurturing, selfless and compassionate traits.Why has it taken so long for Darwin‟s central revelation to be properly interpreted? “We‟ve had too many men in social science,” Berkeley psychology professor Dacher Keltner told me in an interview. “Female scientists acknowledge that …fight or flight‟ is part of human nature, but so is caring for people.” This is no touchy-feely feminist theory. Hard science is showing how the human capacity to care is wired into our brains and nervous systems.In my book Passages in Caregiving, I urge women who assume the whole responsibility for taking care of an elderly parent or chronically ill spouse to build a Circle of Care. Reach out to your brothers and sisters, friends, neighbors and community volunteers to help you care, because no one can perform this overwhelming role alone. Y ou will be as stunned as I to learn how the most selfless caregivers are rewarded with greater longevity(寿命). Stephanie Brown, associate professor of preventive medicine at SUNY-Stony Brook, followed a group of older adults caring for family members with dementia and other illnesses. If they offered care more than 14 hours a week, they were less likely to die in a seven-year period than their peers.“Survival of the Kindest” is not just a th eory. It is becoming a revolutionary cultural movement. There are many signs that caring is gaining currency. Keltner, who has been studying the science of this instinct for 15 years, says we are coming to the end of our cycle of greed. Berkeley and Stanford universities now have compassion centers devoted to the study and teaching of this theory. It will run up against hostility among the Hobbesians. Ayn Rand wrote, “If any civilization is to survive, it is the morality of selfishness that men have to reje ct.” As Americans, we have a cultural bias against caring.Oh, sure, we give our families gifts generously during the holiday season, but in a capitalist system based on unrestrained competition, we worry that if we care, we lose. Compassion is a woman‟s word. In men, it‟s cast as weak, when in fact it makes us stronger under stress and more highly respected by our peers. For so long we have repeated the careless saying “Nice guys finish last.” But the 40 richest Americans who took the Giving Pledge to comm it half their fortunes to doing good are no spring chickens. Here is my reinterpretation: Nice guys die last.52. According to the Berkeley researchers, Darwin‟s central revelation is that .A) humans are born to be selfish C) fight is not part of human natureB) selfless makes us a successful species D) care is related to our nervous system53. Professor Dacher Keltner holds that caring for people .A) takes people‟s time and put them at a disadvantageB) is the nature of humans just like “fight or flight”C) isn‟t a human capacity connected with our brainsD) isn‟t supported by males due to fierce competition54. What does Stephanie Brown‟s study reveal?A) Selfless caregivers tend to have a longer lifespan.B) Caregivers are more likely to die from heavy workload.C) Caregivers should turn to community volunteers for help.D) The longer a person offers care, the less likely he is to die.55. The author quotes Ayn Rand to support the opinion that .A) women should be selfless in order to live longerB) people must be selfless to maintain the societyC) the cycle of greed must be ended immediatelyD) compassion centers are necessary to a civilization56. The author suggests a man with compassion .A) will live longer than those without it C) is more likely to be respected by his peersB) is often regarded as a coward and loser D) has much greater difficulty in successPassage TwoQuestions 57 to 61 are based on the following passage.Compared with elderly parents and adult children in five other industrialized nations, Americans are twice as likely to have “disharmonious” relationships, a new multinational study has found. And we‟re correspondingly less likely to have “friendly” relationships marked by str ong affection and relatively free of conflict. The study of nearly 2,700 parents over age 65, published recently in The Journal of Marriage and Family, turned up significant national differences. German and Spanish parents described relationships with their adult children as more detached. The English reported the most friendly families. Israelis operated with a high degree of ambivalence (正反感情并存), meaning。

6级考前冲刺试题三参考答案及录音文本

6级考前冲刺试题三参考答案及录音文本

参考答案Part I Writing【参考范文】Lack of Credit Among College StudentsIn recent years, lack of credit among college students has become quite a serious problem in modern society. One of the typical examples is that many college students can not pay off in time or even do not return their student loans after graduation. In addition, quite a few employers complain college students change or break the contracts too casually, or make fraud in their resumes.Though not all the students should be blamed for this phenomenon, the short of credit among some college students can bring negative effects. Above all, it damages the overall image of college students. Also, it will be very unfavorable tocollege students’ employment and development. Moreover, it makes the gove rnment and the enterprises suffer a lot, which directly inhibits the development of the whole society.Undoubtedly, it is quite urgent for us college students to enhance our credit. Firstly, universities should strengthen honesty education. Secondly, college students should supervise each other and realize the importance of credit in their study and life. Thirdly, some necessary warning or punishment should be given to those college students who lack credit. Only in this way can college students build up a good public image.Part II Reading Comprehension (Skimming and Scanning)1. B)2. C)3. C)4. A)5. D)6. D)7. B)8. risk price rises 9. far stricter 10. taxedPart III Listening Comprehension11. C) 12. C) 13. D) 14. C) 15. C) 16. B) 17. D) 18. B)19. C) 20. B) 21. C) 22. C) 23. B) 24. D) 25. A)26. A) 27. B) 28. C)29. A) 30. D) 31. D)32. A) 33. A) 34. C) 35. B)36. companionship 37. entire 38. raised 39. familiar40. opportunities 41. suggest 42. generally 43. immediate44. the family moves when a parent accepts a job in another place or when it decides to live in a better neighborhood45. Because the family is one of the few ongoing sources of affection and companionship in modern societies46. families are more likely to break up if the husband’s or wife’s emotional needs are not met within the familycirclePart IV Reading Comprehension (Reading in Depth)47. provide assistance48. the generation of revenue49. reluctance50. ill equipped51. responsive and collaborative52. C) 53. A) 54. A) 55. D) 56. A)57. C) 58. A) 59. B) 60. B) 61. D)Part V Cloze62. B) 63. D) 64. A) 65. B) 66. A) 67. C) 68. D) 69. B) 70. C) 71. D)72. C) 73. A) 74. B) 75. B) 76. A) 77. D) 78. C) 79. D) 80. A) 81. C)Part VI Translation82. when he named it after his name83. are estimated to have exceeded what the government expected84. became the only witness of the case85. unless you manage to find the experts concerned86. more likely to undergo extreme miseries录音文本Part III Listening ComprehensionSection A11. M: You call Henry a dreamer, but I think he’s got a lot of good ideas.W: Well, good ideas are only useful if you make something out of them. I don’t think a day-dreamer can be a good entrepreneur.Q: What does the woman think of Henry?12. W: I have been looking through your application. You seem to have many of the qualifications needed for thisposition. Do you have any work experience?M: Actually, I am scheduled to finish school in June. To be honest, this is the first job I am looking for.Q: What do we learn about the man?13. W: Right, so you do not really want to do the full-time course, then?M: You know, I got a financial problem. My company just agreed to pay the tuition fee. So I have to ask for no-pay leave, if I choose the full-time course.Q: Why doesn’t the man choose full-time course?14. M: I’ve been referred to you because I’d like to get to know a bit more about them.W: OK. We run quite a few different short courses for students who are either retiring to study or studying part-time. Let me show you our refresher courses arrangement.Q: What can you learn about the man from the conversation?15. W: Excuse me, Dr. Johnson. I’m having a bit of trouble with the second assignment, and it is due in 12 days. Ispent all the time on another big assignment so...M: Extensions are normally given only for medical or compassionate reasons.Q: What does the man imply?16. W: Congratulations! You’re to be appointed as Sales Manager!M: Incredible. It’s too good to be true. You must be kidding. I’ve only been working for two months in this department, and this is totally a huge surprise!Q: How does the man react to the news?17. W: There are about twenty reading materials in the list, and I am not sure which one would be the most useful orimportant.M: They are all useful, but I don’t expect anyone to read them all, because a number of them deal with the same issues.Q: Why does the woman visit the man?18. W: I would not bother with the complicated problem at this stage, if I were you.M: OK, I won’t bother with this one. Then what kind of problems should I focus on now?Q: What does the woman suggest the man do?Now you will hear the two long conversations.Conversation OneW: What a day! I’m exhausted.M: Well it’s not over yet.W: Yeah, but it’s over for me. I have to go back home and be there when the kids get home.M: Oh, that’s right. I have to go back to the office. My lawyer is waiting there to talk about a contract dispute we have with one of our clients. How long does it usually take you to get home from here?W: It depends on traffic. Sometimes I can get home within half an hour. I should be home today around 5 p.m.M: It’s so convenient that your office is close to the fourth ring road. I sometimes have to fight traffic for an hour just to get to the third ring.W: I know. Hey, will you get home tonight in time to watch “That’s Incredible!”?M: I hope so. That’s my favorite program. I love all those weird things people do.W: I’ll be watching it too. Well, if your meeting goes too late, give me a call and I’ll record it.M: Thanks. I may do that. I might have to miss it tonight if my boss decides on our business trip to Shanghai tomorrow.Then I’ll have to stay later to get ready.W: Oh, I hate going to Shanghai.M: It’s not that bad. I would like to know earlier, however.Questions 19 to 22 are based on the conversation you have just heard.19. Why was the woman anxious to go back home?20. What did the man think of the woman’s t rip between office and home?21. What do you know about the program “That’s Incredible!”?22. Why might the man miss the program?Conversation TwoM: Hello!W: Hello. This is Lily Wilson. May I speak to Ted Robinson, please?M: Hi, Lily! It’s Ted, What can I do for you?W: Well, I’m calling about the theatre group I belong to, the Princeton Players. We’re looking for more people to join, especially men. And I thought you would be interested.M: Oh! You know how much I love acting, but I’m taking some very hard courses. I might be able to learn my part, but I would hardly have time to come to the rehearsal.W: Well, actually we practice only one night a week, Thursdays, from seven to ten. So we wouldn’t have to put in extra time before a performance.M: Only once a week, you say? Well, could you give me time to think it over?W: Sure, but look, why don’t you come and watch our practice next Thursday? I think you’ll like the way we work.When you see how much fun it is, you’ll want to join right away.M: OK. I’ll come to a rehearsal, but I can’t promise more than that.W: Great! I’ll give you a call on Wednesday to remind you. Talk to you then. Bye now!M: Bye, Lily!Questions 23 to 25 are based on the conversation you have just heard.23. Why does Lily think Ted might be interested in the theatre group?24. Why does Ted ask for time to think about whether he will join the group?25. What does Lily expect Ted to do?Section BPassage OneHumans are social animals, and most of us treasure our relationships with family and friends. An emerging lineof research suggests that relationships can keep us healthier. And a new study finds those social connections may also help us live longer. This new study combined a large number of previous studies and concluded that a lack of social interactions ranks right up with smoking, obesity, and alcoholism as a risk factor for death. Researchers from Brigham Young University analyzed 148 studies with a total of some 300,000 participants, tracking their social relationships and whether they survived to the end of their particular study, which averaged about seven years. “Those who scored higher on those measures of social relationships were 50 percent more likely to be alive at that follow-up than people who scored low on those m easures,” said Professor Julianne Holt-Lunstad, one of the authors of the study. She pointed out several ways relationships can affect our health. They can help us cope with stress. They can help us maintain healthy habits like eating well, exercising or s eeing a doctor. And there’s increasing research that shows a direct but poorly-understood link between relationships and physiological processes in the body. “So for instance, our relationships have been linked to lower blood pressure, better immune functi oning, and even inflammatory processes that are implicated in a number of diseases,” said Holt-Lunstad. “And so our relationships can influence our health in a variety of ways that are all very important.” Julianne Holt-Lunstad said her research suggests that policy makers need to consider relationships as a health issue.Questions 26 to 28 are based on the passage you have just heard.26. What is the passage mainly about?27. How many participants were involved in the study?28. What does Julianne Holt-Lun stad’s research suggest?Passage TwoTime and time again, one may be warned, “Your name will be mud”. Many have used the expression in the mistaken belief that it has something to do with the kind of dirt found in the streets or on unclean river bottoms. But the expression comes from the name of Doctor Samuel Alexander Mudd, a physician who fixed the broken leg of John Wilkes Booth, the man who killed President Abraham Lincoln. Doctor Mudd treated Booth’s injured leg without knowing who he was. A small gro up helped Booth to plan Lincoln’s murder. They were all caught and sentenced to death or prison terms. Doctor Mudd had nothing to do with Lincoln’s murder or with any of the men who had planned it. All seemed to show that he was an innocent man. But he had given some kind of help only to leave Booth to escape. This in itself was a crime then. And so, Doctor Mudd was sentenced to prison for life. In prison, Doctor Mudd saved many prisoners and guards in a yellow fever outbreak. President Andrew Johnson pardoned him in 1869, after the doctor had spent almost four years in prison. The American people considered themurder of Lincoln a heavy blow to them. It filled them with bitterness that lasted many years. They hated Booth very much and they also hated anybody who had helped the murderer in any way. Doctor Mudd was freed, but people never forgave him and his name passed into American folk speech as something bad, hateful. The Mudd family had also suffered a lot because of the name until not long ago.Questions 29 to 31 are based on the passage you have just heard.29. What does the expression “Your name will be mud” mean, according to the passage?30. Why was Mudd sentenced to life imprisonment?31. What would have happened to Mudd but for President Andrew Joh nson’s pardon?Passage ThreeIn spite of some signs that the recession in Japan could be easing, the important export market is down nearly 46 percent, compared to a year ago. At the center of the downturn, are Japan’s car manufacturers —heavily dependent on foreign markets. It is not only a lack of demand from abroad that has hurt these companies, but growing disinterest in car ownership at home, too. The Japan Automotive Manufacturers Association forecasts that, for the first time in almost three decades, less than five million automobiles will be sold domestically this year. This is not only because of the recession, but a change in the way Japanese consumers regard owning a vehicle. A generation ago, car ownership in Japan was seen as a sign of wealth and affluence. But Martin Schultz, senior economist at the Fujitzu Research Institute in Tokyo, says that mindset is a thing of the past. “For younger people in Japan, the car is simply not a status symbol anymore. It is a tool,” Schultz said. “Japan has w onderful infrastructure beyond roads. For younger people, having a car is basically a costly and cumbersome affair. ”Surging gas prices and parking lot fees that put drivers back hundreds of dollars a month are just some of the reasons why young Japanese would rather spend their money elsewhere. Japanese automakers have seen this trend coming for a while. And, in part, that is why they focus so much attention on foreign markets. To offset the slump in sales, manufacturers have laid off hundreds of thousands of short-term contract workers. There is concern here that, if the production does not pick back up soon, companies may have to resort to letting go of full-time salaried employees.Questions 32 to 35 are based on the passage you have just heard.32. What is the passage mainly about?33. What do Japanese younger people regard car ownership as, according to Schultz?34. What might be the reason that young Japanese don’t want to buy cars?35. What have Japanese automakers done to offset the slump in sales?Section CAlthough they may not die from lack of love, adults also need a great amount of affection and (36) companionship. In the past, many people spent their (37) entire lives in the communities in which they were born and (38) raised. Many more people continued to live with their parents, brothers and sisters after they were married and had children of their own. By remaining in (39) familiar communities with relatives nearby, families had enough (40) opportunities for friendly contact and support in time of trouble.Recent studies (41) suggest that family arrangements in Western societies have not changed as much in the last few centuries as is (42) generally believed. Yet most sociologists agree that in modern societies, there are fewer opportunities for friendship and support from relatives outside the (43) immediate family. Parents and children often live apart from other relatives, and seldom visit them. Also, (44) the family moves when a parent accepts a job in another place or when it decides to live in a better neighborhood. Together, loneliness and mobility force immediate family members to depend heavily on one another for affection and companionship.(45) Because the family is one of the few ongoing sources of affection and companionship in modern societies,a high percentage of people continue to marry, even though it is possible for a single man and woman to live together without marrying. On the other hand, because affection and companionship have become so important, (46) families are more likely to break up if the husband’s or wife’s emotional needs are not met within the family circle —even if all other family functions are being satisfactorily performed, and in this sense, affection and companionship have become the touchstone of the modern family.。

(北京版)-2023学年六年级下学期小升初数学真题考前冲刺押题卷(北京版)含答案

(北京版)-2023学年六年级下学期小升初数学真题考前冲刺押题卷(北京版)含答案

(北京版)2023 学年六年级下学期小升初数学真题考前冲刺押题卷一.选择题(共8 小题)1.一个棱长5cm 的正方体木块,把它截成两个完全一样的长方体,表面积增加了()cm2。

A.10 B.25 C.502.如图是一个剧院座位的示意图,计算这个剧院共有多少个座位,正确的算式是()A.56×8+10×2 B.28×18+8×2 C.28×10+26×83.若a<b,且a、b 均为非零自然数,下面各式中计算结果最大的是()A.B.C.D.4.强强用剪拼法验证三角形ABC 内角和是180 度,下面拼法中正确的是()A. B.C. D.5.A 和B 是两个非零自然数,且A=B+1,则A 和B 的最小公倍数是()A.A B.B C.1 D.AB6.两位数乘两位数算式“□7×□8”的乘积可能是()A.10256 B.5614 C.3886 D.2067.某乡镇去年棉花的产量是前年的115%,去年棉花的产量比前年增长的成数是()A.五成B.一成五C.十五成8.用如图的长方形纸围成一个圆柱(不能有重叠),有两种围法这两种围法所得的圆柱的()相等。

A.侧面积B.底面积C.高D.体积二.填空题(共9 小题)9.一个圆锥的体积是9 立方厘米,底面积是3 平方厘米,它的高是厘米。

10.小明由于粗心把60×(a+4)错写成60×a+4,他算的结果与正确结果相差。

11.把一根长1.8m 的圆柱形木材沿横截面截成两个圆柱体木材,截完后表面积比原来增加20cm²,这根木材原来的体积是dm3。

12.学校举办运动会,参加比赛的运动员在170﹣180 人之间,已知男运动员是女运动员人数的75%,则男运动员有人,女运动员有人。

13.在3.14、3.、π、3.14%中,最大的数是,最小的数是。

14.底面积和高分别相等的一个圆柱和一个圆锥,已知它们的体积差是64 立方米,圆柱的体积立方米,圆锥的体积是立方米。

(期末押题卷)小升初考前冲刺提高卷2022-2023学年六年级下册数学高频易错题含参考答案

(期末押题卷)小升初考前冲刺提高卷2022-2023学年六年级下册数学高频易错题含参考答案

(期末押题卷)小升初考前冲刺提高卷2022-2023学年六年级下册数学高频易错题(北师大版)一、选择题.h.h,乙容器倒出,丙容器倒出 ,丁容器 ..从前面看是,从右面看也是的图形是(. . .二、填空题10.一个圆柱的底面半径和高都扩大5倍,它的体积扩大 倍.11.已知甲数是乙数的3倍,则乙数是甲数的 ,甲数和甲乙两数之和的比是 ,乙数和甲乙两数之三、判断题17.从A 地到B 地,甲要4分钟,乙要5分钟,甲乙的速度比是5∶4。

( ) 18.分针旋转90度需要15分。

( )19.佳佳的身高是120cm ,乐乐的身高是1m ,佳佳和乐乐的身高比是120∶1。

( )20.甲、乙两数的比是4∶5,则甲数比乙数少20%。

( )21.一种商品按原价打八折售出恰好不赚不赔,此商品按原价出售的利润率是25%。

( ) 22.妈妈买了一部新手机,打七五折后是1500元,妈妈买这部手机比原价便宜了500元。

( ) 23.一个平行四边形按4∶1的比放大后,每条边的长度放大为原来的4倍,周长放大为原来的16倍。

( ) 24.长方体、圆柱、圆锥的体积都可以用底面积乘高来计算。

( )25.搭立体图形,从上面看到的是,从左边看到的是,笑笑认为最多可以搭出4种这样的立体图形。

( ) 四、计算题29.求阴影部分面积.五、解答题(2)如果大楼的C点有一个标志,请标记出笑笑在路上看不到这个标志的路段。

33.今年植树节,六(2)班甲、乙、丙三个小组植树,平均每个小组植树24棵,这三个小组植树棵数的比是5:3:4,丙组植树多少棵?34.四年级回收废旧电池450节,四年级回收的节数比五年级少30节,五年级回收的节数是六年级的80%,六年级回收废旧电池多少节?(用方程解答)35.用一辆汽车运送一批货物,请完成下表.载重(吨) 4 6 10 12 15 20运送次数(次)30 20(1)运送货物的质量一定,运送的次数与汽车载重的吨数成什么比例?(2)如果载重为30吨的大货车运送这批货物,几次可以运完?36.将一根体积为62.8立方分米的圆柱形木料,沿底面直径切成形状相同的两部分,表面积增加了80平方分米,这根圆柱形木料长多少米?37.长是60厘米的圆柱按3:2分成一长一短的两个圆柱,表面积增加了30平方厘米,长一点的圆柱的体积是多少立方厘米?参考答案:1.C【分析】根据圆的周长公式:周长=π×半径×2,求出圆的半径;再根据圆的面积公式:π×半径2,代入数据,即可解答。

(新高考)2021届高考考前模拟冲刺卷 地理试卷03(含解析)

(新高考)2021届高考考前模拟冲刺卷 地理试卷03(含解析)

(新高考)2021届高考考前冲刺卷地 理 (三)注意事项:1.答题前,先将自己的姓名、准考证号填写在试题卷和答题卡上,并将准考证号条形码粘贴在答题卡上的指定位置。

2.选择题的作答:每小题选出答案后,用2B 铅笔把答题卡上对应题目的答案标号涂黑,写在试题卷、草稿纸和答题卡上的非答题区域均无效。

3.非选择题的作答:用签字笔直接答在答题卡上对应的答题区域内。

写在试题卷、草稿纸和答题卡上的非答题区域均无效。

4.考试结束后,请将本试题卷和答题卡一并上交。

第Ⅰ卷(选择题)本卷共15个小题,每小题3分,共45分。

在每小题给出的四个选项中,只有一项是符合题目要求的。

当地表的水被太阳暴晒,汽化上升到空中,许许多多的水蒸气聚集在一起,凝聚成云,如果温度急剧下降,就会凝结成较大的冰团,也就是冰雹。

下面是北京市地形图(图甲)和北京市冰雹发生年平均频率(%)的空间分布图(图乙)。

读图,完成下面小题。

1.北京市的冰雹天气经常出现在 A .冬季正午 B .夏季早晨 C .夏季午后D .秋季子夜2.就北京市多年平均情况看,冰雹发生的频率和其原因的叙述,正确的是 A .中心城区冰雹发生频率偏低,主要是因为热岛效应强B .东南部地区冰雹发生频率低,主要是因为平原降水多C .西北部地区冰雹发生频率高,主要是因为地形增温差异产生强对流D .平原比山区冰雹发生频率高,主要是因为平原升温快 3.冰雹天气的一般特征是 A .影响范围广 B .历时长C .没有季节性D .常伴有雷暴、大风【答案】 1.C 2.C 3.D 【解析】1.根据材料,冰雹的形成条件是地表太阳辐射强,水气蒸发,气温急剧下降,水汽凝结成冰雹。

北京的夏季太阳辐射强烈,午后地表气温高,对流旺盛;加上夏季降水多,地表水汽多,强烈的对流使气温迅速下降,水汽凝结形成冰雹。

C 正确。

冬季和秋季太阳辐射弱,对流弱,夏季早晨地表气温低,难以形成冰雹。

ABD 错误,故选C 。

2.从图可知,中心城区冰雹发生频率偏低,主要是城区水汽少,A 错误。

期末考前大冲刺高频考点易错题(一)-2022-2023学年六年级上册数学试卷(青岛版)(有答案)

期末考前大冲刺高频考点易错题(一)-2022-2023学年六年级上册数学试卷(青岛版)(有答案)

期末考前大冲刺高频考点易错题(一)2022-2023学年六年级上册数学试卷(青岛版)满分:100分考试时间:80分钟亲爱的同学,本学期的学习之旅即将结束,相信你已经顺利完成本学期的学习任务,请认真分析下面的每一道题,相信你一定能获得满意的答卷!一、选择题(每题2分,共18分)1.比的前项扩大到原来的10倍,比的后项缩小到原来的110,则比值就()。

A.相等B.扩大到原来的100倍C.缩小到原来的110D.扩大到原来的10倍2.搭配一种花束,所需红玫瑰和白玫瑰的数量比为5∶3。

现要搭配这种花束,红玫瑰和白玫瑰各有60枝,那么当红玫瑰全部用完时,白玫瑰会()。

A.有剩余B.不够C.正好用完3.将13米平均分成()份,每份是118米。

A.18B.54C.6D.无法确定4.甲数与乙数的比值是35,那么乙数与甲数的比是()。

A.3:5B.5:3C.3:8D.8:55.20的25是()。

A.50B.8C.16D.326.元旦期间甲、乙两个超市对同一种定价相同的饮料举行促销活动,甲超市买5送1,乙超市降价20%。

李老师要为运动员买一些这样的饮料,到哪个超市去买比较便宜?()A.两超市一样B.甲超市C.乙超市D.不能确定7.一个骰子,六个面上分别写着数字1、2、3、4、5、6,掷一次,朝上的数字是()的可能性最小。

A.合数B.奇数C.偶数8.a是一个大于0的数,下面算式中得数最小的是()。

A.45a÷B.45a⨯C.1a÷9.有两根2米长的绳子,从第一根上剪去它的23,从第二根上剪去23米。

余下部分相比()。

A.第一根比第二根长长B.第二根比第一根长C.一样长二、填空题(每空1分,共20分)10.124的倒数是( ),1.2的倒数是( )。

11.古希腊时期,人们认为最美的人体应该符合黄金分割比例,即从脚底到肚脐的高度与身高的比大约是0.618∶1,这样整个人就会看起来很美。

罗马神活中爱和美的女神维纳斯的身高比例就符合黄金比。

2023年6月英语六级第三套题目答案一览

2023年6月英语六级第三套题目答案一览

2023年6月英语六级第三套题目答案一览2023年6月英语六级第三套题目答案已经公布,需要核对答案的同学可以参考一下。

下面是我为大家整理的2023年6月英语六级第三套题目答案一览,欢迎大家(保藏)与共享一下哟!2023年6月英语六级第三套题目答案一、六级(作文)部分:Writingmore and more people take the delight to helping the needy(范文):Currently in our society, it is quite prevalent for citizens to give a hand to those who are in need of help.Apart from this trend, what encourages people is that people in growing numbers find it delighted to help the needy. The reasons, from my per-spective, can be listed as follows.The first motivation behind this trend lies in the growing abili-ty of average people to help others. Unlike those in the early 21st century, people in current society are equipped with knowledge,skills, and even economic strength to provide more assistance to help the needy. What is more, this trend is largely associated with the sense of satisfaction of the public. When offering help on time, those who lend a hand realize their own value and thus part of the meaning of their life, whichfurther strengthens similar behaviors in their daily life. The last factor is about positive energy in the mass media.In China,a country with traditional virtues of helping the disadvantaged, matters of the help among common people are great ingredients for the publicity of both tradition virtues and modern values.For me, it is much delighted to see that the public are more likely to lend a hand to others voluntarily.With peoples growing ability, the sense of satisfaction, and the spread of good deeds in the mass media, this trend will inevitably become a norm in our society.二、六级听力部分:更新中。

高中化学 2021届高考考前冲刺卷 化学(三) 教师版

高中化学  2021届高考考前冲刺卷 化学(三) 教师版

(新高考)2021届高考考前冲刺卷化 学(三)注意事项:1.答题前,先将自己的姓名、准考证号填写在试题卷和答题卡上,并将准考证号条形码粘贴在答题卡上的指定位置。

2.选择题的作答:每小题选出答案后,用2B 铅笔把答题卡上对应题目的答案标号涂黑,写在试题卷、草稿纸和答题卡上的非答题区域均无效。

3.非选择题的作答:用签字笔直接答在答题卡上对应的答题区域内。

写在试题卷、草稿纸和答题卡上的非答题区域均无效。

4.考试结束后,请将本试题卷和答题卡一并上交。

可能用到的相对原子质量:H 1 C 12 N 14 O 16 Na 23 S 32 Cl 35.5一、选择题:每小题3分,共45分。

每小题给出的四个选项中,只有一项是符合题目要求的。

1.下列说法不正确...的是 A .用石英砂与焦炭在高温条件下反应直接制得高纯硅 B .高炉炼铁、生产水泥和制造玻璃都要用到石灰石 C .海水提取粗食盐后的母液,可作为提取镁的原料D .铜盐能杀死某些细菌,并能抑制藻类生长,常用硫酸铜作游泳池水消毒剂 【答案】A【解析】A .用石英砂与焦炭在高温条件下反应直接制得粗硅,粗硅提纯可得高纯硅,故A 错误;B .高炉炼铁需要用石灰石,它用作熔剂,助熔,造渣,生产水泥需要用黏土和石灰石为原料,制造玻璃需要用纯碱、石灰石和石英为原料,所以都要用到石灰石,故B 正确;C .海水提取粗食盐后的母液中含有氯化镁,可作为提取镁的原料,故C 正确;D .铜盐中的铜离子,能杀死某些细菌,并能抑制藻类生长,常用硫酸铜作游泳池水消毒剂,故D 正确;故答案为A 。

2.N A 是阿伏加德罗常数的值。

下列说法正确的是 A .标准状况下,2.24L 四氯化碳含共价键总数为0.4N A B .由H 218O 与D 216O 组成的4.0g 混合物含中子数为2N A C .由NO 2与N 2O 4组成的4.6g 混合气体含氮原子数为0.5N AD .标准状况下,溶有6.72L SO 2的水中HSO −3与SO 2−3的微粒数目之和为0.3N A【答案】B【解析】A .标准状况下,四氯化碳为液态,不能用气体摩尔体积计算四氯化碳中共价键的总数,A 项错误;B .1mol H 218O 中含有中子数为(0×2+18-8)×N A =10N A ,相对分子质量为20g/mol ,1mol D 216O 中含有中子数为(1×2+16-8)×N A =10N A ,相对分子质量为20g/mol ,故 4.0g 混合物含中子数为A A 4.0g10N =2N 20g/mol⨯⨯,B 项正确;C .二氧化氮和四氧化二氮的最简式都是NO 2,4.6g 由NO 2与N 2O 4组成的混合气体中含有氮原子数为A A 4.6g1N =0.1N 46g/mol⨯⨯,C 项错误;D .标准状况下,6.72L SO 2的物质的量为6.72L=0.3mol 22.4L/mol,其水溶液中还存在亚硫酸分子,根据物料守恒可知,HSO −3与SO 2−3的微粒数目之和小于0.3N A ,D 项错误;答案选B 。

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6级考前冲刺试题三Part I Writing (30 minutes)Directions:For this part, you are allowed 30 minutes to write a short essay entitled Can Knowledge Change One’s Destiny?You should write at least 150 words following the outline givenbelow.1. 有人相信知识能改变命运2. 有人则认为当今社会光靠知识已经很难改变命运3. 我认为……Can Knowledge Change One’s Destiny?________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________ ________________________________________________________________________________________________Part II Reading Comprehension (Skimming and Scanning) (15 minutes)Directions: In this part, you will have 15 minutes to go over the passage quickly and answer the questions on Answer Sheet 1. For questions 1-7, choose the best answer from the fourchoices marked A), B), C) and D). For questions 8-10, complete the sentences with theinformation given in the passage.Comparing Y ourself to Others: It’s Not All Bad“To compare is to despair,” the saying goes, and I‟ve generally found it to be true. If I try hard enough (and sometimes even if I don‟t) I can usually find someone who performs better or has more. And I can feel bad about it.I objectively know that my own life is pretty good, but this upward comparison, as economists and psychologists call it, can somehow dim my own accomplishments. “Comparison is rife with danger, but it‟s understandable why we do it,”said Heidi Grant Halvorson, a social psychologist. “We‟re human beings and we naturally seek information.”One way to get information, Ms. Halvorson said, is to turn to experts. Another way is to look at those around us.And often what we see in our neighborhood or community is more important, in our minds, than anything else. Economic studies have shown, for example, that once they make a certa in amount of money to cover basics, most people care more about relative, rather than absolute, income. That is, most of us feel better if we make, say, $100,000 if the majority of our neighbors make $75,000 than if we earn $150,000 when most of our friends bring in $200,000.One such study, “Neighbors as Negatives: Relative Earnings and Well-Being,” published in 2005 in The Quarterly Journal of Economics, found that “higher earnings of neighbors were associated with lower levels of self-reported happiness.”The paper cites the oft-quoted saying by the economist and philosopher John Stuart Mill: “Men do not desire to be rich, but to be richer than other men.”Erzo F. P. Luttmer, the author of the study and an associate professor of economics at Dartmouth College, said in a telephone interview that neighbors “influence what you think is a normal lifestyle, and you struggle to keep up.”We‟re often told to avoid comparing, but this is both difficult and not necessarily wise advice in all situations.Ms. Halvorson, who is also author of the book “Succeed: How We Can Reach Our Goals”(Hudson Street Press, 2010), said we needed to think about why we were seeking the information. “Upward comparison can be punishing and make you feel terrible,”she said. “But you can also look upward to learn.”If we feel bad, for example, about how well we just played in a game of tennis, we can check out those who play worse to make ourselves feel better, and avoid watching the semi-pros on the other court. Or, if we believe that we can improve and learn by looking at others — and not just feel inferior about playing worse — then we can watch the better players.There are also pros and cons to comparing ourselves with people worse off than ourselves. It‟s not good if we‟re just trying to gain a sense of superiority or avoiding challenging ourselves to do better. But such downward comparisons can remind us of our own fortune. They can also help us when we think about the things we regret but we cannot change.As part of a study co-written by Isabelle Bauer, a clinical psychologist in Toronto, 104 people of various ages were asked to complete a survey about their greatest misgivings — choosing the wrong career path, or failing to make amends to someone who passed away or marrying the wro ng person.The study found that those who felt that other people had regrets that were “more”or “much more” severe reported an increase in positive emotions when reassessed four months later compared with those who said that other people‟s regrets were “less” or “much less” severe.“If you can‟t change what you did, then downward social comparison helps us gain perspective,”Ms. Bauer said. “And those people are able to move on and re-engage in other goals. If you compare upward about things you can‟t change, then you seem to just feel stuck.”But those who compared themselves downward and had the opportunity to do something about their regrets didn‟t feel any more positive over time, she said.Comparisons can also serve as a reality check, particularly when speaking about money.My colleague Ron Lieber, for example, wrote about NetworthIQ, a site that allows people to anonymously post their own net worth. Would we be happier and healthier, he asked readers, if we knew the net worth of our friends, colleagues and neighbors?The overwhelming response was no. As one commenter put it: “I am sickened by the idea of calculating one‟s …net worth‟in terms of money. It‟s good to have savings and it‟s good to have a nest in which one can nestle when one exceeds productive years. However, to express your worth in terms of the …how much?‟question is one more step toward dehumanization. I‟d rather figure out my net worth in terms of how much I am worth to the world in which I live.”Not everyone feels that way, of course, and plenty of people have posted their profiles on .ING Retirement, a United States-based division of the Dutch financial services group, a few years ago introduced , which allows you to anonymously type in your profile —your age, income, gender and marital status.Then you answer some personal finance questions, like the amount of money you‟ve put aside for retirement, your mortgage payments, what you think you‟ll need to save to retire comfortably andso on. Y ou are then instantly compared with your peers.I answered some of the questions and seemed pretty average. I guess I was pleased our retirement savings were slightly higher than those of the other 1,071 people who answered the question with a similar profile, but I also wasn‟t sure if I should be. Might it just mean that all of us are saving too little? Was I getting a false sense of security?Not at all, said Denis-Martin Monty, vice president of emerging product development at ING Retirement. Rather, it is a useful tool to get us to think about things we often don‟t want to —like how much (or little) we‟ve put away for retirement.The site was initially tested among 28,000 employees of ING‟s larger clients. When asked at the end of the survey, 64 percent of those who measured themselves chose to take some sort of positive action, like enroll in a retirement plan or increase their savings rate.Mr. Monty also pointed out that studies show that most of us think we‟re above average, what he called the Lake Wobegon effect.“We tend to overestimate where we stand in comparison to other people,”he said. So people aren‟t necessarily looking at how much more they‟re actually saving than other people, he said, but how much more they thought they were saving.The site recently hit the million-user mark, Mr. Monty said.David Laibson, a professor of economics at Harvard University, who has looked at the impact of providing peer information on retirement savings decisions (it can be helpful, but not always) agreed that such comparisons can serve a purpose.“Comparisons to large groups of peers are often useful,”he said. “It‟s never the final word on what I should do, but it does give me food for thought.”I doubt most of us are ever going to stop comparing ourselves with others. The most important point to keep in mind, however, is as Ms. Halvorson said: “There‟s a lot of imperfect comparison going on. We never see the whole picture.”1. What is Heidi Grant Halvorson‟s view of comparison?A) It highlights people‟s achievements in some way.B) It can be accepted as a way of getting information.C) It should be blamed for causing hopelessness.D) It makes people feel satisfied with their own life.2. According to economic studies, what do most people do when they are able to meet their basic need?A) They are more interested in relative income.B) They devote themselves to community causes.C) They desire to become richer and richer.D) They associate their happiness with their income.3. The author said the advice that people should avoid comparing is _______.A) sensible B) constructive C) unwise D) impossible to follow4. What is the advantage of upward comparison according to Ms. Halvorson?A) It can lighten people‟s mood. C) It gains people a sense of superiority.B) It motivates people to improve. D) It helps people get rid of bad habits.5. What did the study co-written by Isabella Bauer reveal?A) People tend to compare themselves with those worse off.B) Most people make wrong decisions in their whole life.C) Downward comparison makes people feel more positive.D) Upward comparing is more helpful than downward comparing.6. If there is nothing people can do about their regrets, Ms. Bauer suggested that people _______.A) reflect on their failures alone C) look at the past to gain a perspectiveB) look upward to learn and improve D) make downward social comparison7. According to Ron Lieber‟s article, many people thought that knowing the net worth of others _______.A) helped check their spending C) was the source of their miseryB) had influenced their lifestyle D) would not make them happier8. Finding her retirement savings were a little more than her peers, the author doubted if she was getting a wrong ______________________________.9. Denis-Martin Monty said that people tend to ______________________________ their position when comparing themselves to other people.10. According to David Laibson, comparing with large groups of peers helps because it gives people______________________________.Part III Listening Comprehension(35 minutes)Section ADirections: In this section, you will hear 8 short conversations and 2 long conversations. At the end of each conversation, one or more questions will be asked about what was said. Both theconversation and the questions will be spoken only once. After each question there will be apause. During the pause, you must read the four choices marked A), B), C) and D), anddecide which is the best answer. Then mark the corresponding letter on Answer Sheet 2with a single line through the centre.11. A) He doesn‟t have any good ideas. C) He doesn‟t put his ideas into practice.B) He has many interesting dreams. D) He sleeps a lot without doing anything.12. A) He has just quitted his former job. C) He is applying for a job.B) He has graduated last June. D) He has some work experience.13. A) His boss doesn‟t agree. C) He has chosen some part-time courses.B) He has to pay the tuition fee first. D) He can‟t afford to study without salary.14. A) He is a full-time student.B) He is a part-time worker.C) He is going to take refresher courses.D) He has known all the details about the course.15. A) He knows nothing about the other assignment.B) He doesn‟t think it‟s necessary to ask for a long time.C) He asks the woman to hand in her assignment on time.D) He will give the woman an extension for her assignment.16. A) He was arrogant about it. C) He was not surprised about it.B) He found it unbelievable. D) He found the truth unacceptable.17. A) To ask the man to read the book together.B) To request the man to write a term paper for her.C) To complain about the numbers of reading materials.D) To ask for some advice on how to select the reading materials.18. A) He had better assess his own ability.B) He should try to solve some easier problems now.C) He must study hard to solve the difficult problems.D) He should find some more complicated problems to solve.Questions 19 to 22 are based on the conversation you have just heard.19. A) She has finished her work. C) Her kids will arrive home after school.B) She is too exhausted to work. D) The man does not ask her to go back to the office.20. A) It is weird. C) It is comfortable.B) It is convenient. D) It is exhausting.21. A) The woman does not like it. C) One can see a lot of strange things in it.B) It is produced by weird people. D) The man is determined to watch it tonight.22. A) His boss might ask him to stay up late.B) The woman will record tonight‟s program.C) He may have to prepare for tomorrow‟s business trip.D) He will be having a meeting with his boss at that time.Questions 23 to 25 are based on the conversation you have just heard.23. A) He has a lot of free time. C) Many of his friends are actors.B) She knows he likes acting. D) He‟s looking for an acting job.24. A) He hasn‟t been in a play for a long time.B) He has to rearrange his evening schedule.C) He might not like the way the group works.D) His schoolwork has taken up most of his time.25. A) Enjoy their rehearsal. C) See her on Wednesday.B) Learn his part quickly. D) Pick her up on Thursday.Section BDirections:In this section, you will hear 3 short passages. At the end of each passage, you will hear some questions. Both the passage and questions will be spoken only once. Afteryou hear a question, you must choose the best answer f rom the four choices markedA), B), C) and D). Then mark the corresponding letter on Answer Sheet 2with asingle line through the centre.Passage OneQuestions 26 to 28 are based on the passage you have just heard.26. A) A study on whether social connections can keep us healthier.B) A study on whether social connections make us happier.C) A study on factors that influence psychologic health.D) A study on the relationship between psychology and longevity.27. A) 200,000. B) 300,000. C) 500,000. D) 700,000.28. A) Teenagers should go to see psychologist frequently.B) People should make as many friends as possible.C) Policy makers should consider relationships as a health issue.D) People should place relationships at first place.Passage TwoQuestions 29 to 31 are based on the passage you have just heard.29. A) Y our reputation will be damaged. C) Y ou‟ll get into trouble.B) Y ou have to change your name. D) Y ou can‟t be a doctor any more.30. A) He had helped Booth murder Lincoln. C) He had concealed the facts.B) He had made a diagnostic error. D) He had given Booth help in some way.31. A) He would have suffered a lot from the name.B) He would have been thought of as a criminal forever.C) He would have been sentenced to four years‟ prison life.D) He would have spent the rest of his life in prison.Passage ThreeQuestions 32 to 35 are based on the passage you have just heard.32. A) Japanese car sales are down.B) Economy in Japan is from bad to worse.C) The main consumers of cars in Japan are middle-aged people.D) Japan is heavily depended on the foreign market.33. A) A tool. C) A symbol of status.B) A sign of wealth. D) An article of consumption.34. A) Cars are still too expensive. C) Gas prices and parking lot fees are costly.B) Traffic is heavy on the road. D) Traffic accidents are more and more serious.35. A) They have reduced their products prices.B) They have laid off plenty of short-term contract workers.C) They have laid off many full-time salaried employees.D) They have narrowed down their foreign market.Section CDirections:In this section, you will hear a passage three times. When the passage is read for the first time, you should listen carefully for its general idea. When the passage is read for thesecond time, you are required to fill in the blanks numbered from 36 to 43 with the exactwords you have just heard. For blanks numbered from 44 to 46 you are required to fill inthe missing information. For these blanks, you can either use the exact words you havejust heard or write down the main points in your own words. Finally, when the passage isread for the third time, you should check what you have written.Although they may not die from lack of love, adults also need a great amount of affection and (36) _________. In the past, many people spent their (37) _________ lives in the communities in which they were born and (38) _________. Many more people continued to live with their parents, brothers and sisters after they were married and had children of their own. By remaining in (39) _________ communities with relatives nearby, families had enough (40) _________ for friendly contact and support in time of trouble.Recent studies (41) _________ that family arrangements in Western societies have not changed asmuch in the last few centuries as is (42) _________ believed. Y et most sociologists agree that in modern societies, there are fewer opportunities for friendship and support from relatives outside the (43) _________ family. Parents and children often live apart from other relatives, and seldom visit them. Also, (44) ___________________________________________________________________. Together, loneliness and mobility force immediate family members to depend heavily on one another for affection and companionship.(45) ___________________________________________________________________, a high percentage of people continue to marry, even though it is possible for a single man and woman to live together without marrying. On the other hand, because affection and companionship have become so important, (46) ___________________________________________________________________ —even if all other family functions are being satisfactorily performed, and in this sense, affection and companionship have become the touchstone of the modern family.Part IV Reading Comprehension (Reading in Depth) (25 minutes)Section ADirections:In this section, there is a short passage with 5 questions or incomplete statements. Read the passage carefully. Then answer the questions or complete the statements in the fewestpossible words. Please write your answers on Answer Sheet 2.Questions 47 to 51 are based on the following passage.Schools looking to ban cell phones may have a new excuse: a growing number of people are developing an allergy (过敏) to metal in the devices. We all know that food allergies are on the rise — a study last year placed the rate at 1 per 70 children, compared with 1 in 250 in the 1970s. But at last month‟s meeting of the American College of Allergy, Asthma & Immunology, allergists reported that many substances that once seemed harmless are now leading to allergic reactions too.Allergies can develop when young bodies come into contact with a new substance, and an increasing number of kids have early exposure to tech tools and “adult”products that can lead to a lifetime of reactions. For instance, the nickel hardware often used on phone trim and faceplates can lead to red, itchy(发痒的) skin where the phone is pressed against the face of someone who developed a nickel allergy at a young age. It‟s especially problematic for women, says Luz Fonacier, an allergist who presented at the conference. Y oung girls are often first exposed to nickel when they get their ears pierced, and therefore are more likely to develop a sensitivity to the metal that can causeallergic reactions later on.Temporary tattoos (刺青) could be another new allergy trigger. They share a coloring matter used in hair dyes, which can lead to problems down the line. “Y ou might have kids developing the sensitivity now, and then finding out only when they‟re much older and decide to dye their hair, then have an attack,”says Fonacier. Foods that were once considered low risk, like pumpkin, are now causing some allergic reactions too.So what‟s behind all these new allergens? Some researchers believe that as humans live in cleaner, safer, more disease-free environments, the immune system —given less to do thanks to antibiotics and Clorox — turns on substances once considered safe. Others note that children are being exposed to more and more new foods and foreign substances at earlier ages, which could up the chances of developing a sensitivity. To be safe, Fonacier recommends that children avoid piercing until after age 10. And it‟s all just another reason to keep those cell phones and temporary tats away from young hands.47. Allergists said some allergic reactions are now caused by many substances once considered_____________________.48. Phone trim with nickel can lead to allergic reactions if the phone user _____________________ tonickel at a young age.49. Temporary tattoos could _____________________ allergy because of a coloring mattering theycontain.50. According to some researchers, humans‟ _____________________ is becoming sensitive to somesubstances due to the use of antibiotics and Clorox.51. To reduce the chance of developing a sensitivity, children are advised to _____________________before 10.Section BDirections:There are 2 passages in this section. Each passage is followed by some questions or unfinished statements. For each of them there are four choices marked A), B), C) and D).You should decide on the best choice and mark the corresponding letter on Answer Sheet2 with a single line through the centre.Passage OneQuestions 52 to 56 are based on the following passage.Researchers at the University of California-Berkeley are challenging our long-held belief that humans are hard-wired to be selfish. Darwin‟s theory of evolution by natural selection was misinterpreted by his male popularizers, the researchers say. Rather than “every man for himself”, Darwin believed that humans are successful as a species precisely because of our nurturing, selfless and compassionate traits.Why has it taken so long for Darwin‟s central revelation to be properly interpreted? “We‟ve had too many men in social science,”Berkeley psychology professor Dacher Keltner told me in an interview. “Female scientists acknowledge that …fight or flight‟is part of human nature, but so is caring for people.”This is no touchy-feely feminist theory. Hard science is showing how the human capacity to care is wired into our brains and nervous systems.In my book Passages in Caregiving, I urge women who assume the whole responsibility for taking care of an elderly parent or chronically ill spouse to build a Circle of Care. Reach out to your brothers and sisters, friends, neighbors and community volunteers to help you care, because no one can perform this overwhelming role alone. Y ou will be as stunned as I to learn how the most selfless caregivers are rewarded with greater longevity(寿命). Stephanie Brown, associate professor of preventive medicine at SUNY-Stony Brook, followed a group of older adults caring for family members with dementia and other illnesses. If they offered care more than 14 hours a week, they were less likely to die in a seven-year period than their peers.“Survival of the Kindest”is not just a theory. It is becoming a revolutionary cultural movement. There are many signs that caring is gaining currency. Keltner, who has been studying the science of this instinct for 15 years, says we are coming to the end of our cycle of greed. Berkeley and Stanford universities now have compassion centers devoted to the study and teaching of this theory. It will run up against hostility among the Hobbesians. Ayn Rand wrote, “If any civilization is to survive, it is the morality of selfishness that men have to reject.” As Americans, we have a cultural bias against caring.Oh, sure, we give our families gifts generously during the holiday season, but in a capitalist system based on unrestrained competition, we worry that if we care, we lose. Compassion is a woman‟s word. In men, it‟s cast as weak, when in fact it makes us stronger under stress and more highly respected by our peers. For so long we have repeated the careless saying “Nice guys finish last.” But the 40 richest Americans who took the Giving Pledge to commit half their fortunes to doing good are no spring chickens. Here is my reinterpretation: Nice guys die last.52. According to the Berkeley researchers, Darwin‟s central revelation is that .A) humans are born to be selfish C) fight is not part of human natureB) selfless makes us a successful species D) care is related to our nervous system53. Professor Dacher Keltner holds that caring for people .A) takes people‟s time and put them at a disadvantageB) is the nature of humans just like “fight or flight”C) isn‟t a human capacity connected with our brainsD) isn‟t supported by males due to fierce competition54. What does Stephanie Brown‟s study reveal?A) Selfless caregivers tend to have a longer lifespan.B) Caregivers are more likely to die from heavy workload.C) Caregivers should turn to community volunteers for help.D) The longer a person offers care, the less likely he is to die.55. The author quotes Ayn Rand to support the opinion that .A) women should be selfless in order to live longerB) people must be selfless to maintain the societyC) the cycle of greed must be ended immediatelyD) compassion centers are necessary to a civilization56. The author suggests a man with compassion .A) will live longer than those without it C) is more likely to be respected by his peersB) is often regarded as a coward and loser D) has much greater difficulty in successPassage TwoQuestions 57 to 61 are based on the following passage.Compared with elderly parents and adult children in five other industrialized nations, Americans are twice as likely to have “disharmonious” relationships, a new multinational study has found. And we‟re correspondingly less likely to have “friendly”relationships marked by strong affection and relatively free of conflict. The study of nearly 2,700 parents over age 65, published recently in The Journal of Marriage and Family, turned up significant national differences. German and Spanish parents described relationships with their adult children as more detached. The English reported the most friendly families. Israelis operated with a high degree of ambivalence (正反感情并存), meaning they indicated strong positive and negative emotions. Norwegians placed somewhere in the middle. And Americans took the prize for conflict—defined as a higher incidence of arguing and criticism.。

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