高三综合训练

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高三化学综合训练(含答案)

高三化学综合训练(含答案)

高三化学综合训练学校:___________姓名:___________班级:___________考号:___________一、单选题1、化学促进了科技进步和社会发展。

下列叙述中没有涉及化学变化的是( )A.《神农本草经》中记载的“石胆能化铁为铜”B.利用“侯氏联合制碱法”制备纯碱CO转化为淀粉或葡萄糖C.科学家成功将2CO跨临界直冷制冰D.北京冬奥会场馆使用22、下列说法错误的是( )A.氢键、离子键和共价键都属于化学键B.化学家门捷列夫编制了第一张元素周期表C.药剂师和营养师必须具备化学相关专业知识D.石灰石是制造玻璃和水泥的主要原料之一3、聚乳酸是一种新型的生物可降解高分子材料,其合成路线如下:下列说法错误的是( )A.1=-m nB.聚乳酸分子中含有两种官能团HC.1mol乳酸与足量的Na反应生成1mol2D.两分子乳酸反应能够生成含六元环的分子4、化学实验操作是进行科学实验的基础。

下列操作符合规范的是( )A碱式滴定管排气5、科学家合成了一种新的共价化合物(结构如图所示),X、Y、Z、W为原子序数依次增大的短周期元素,W的原子序数等于X与Y的原子序数之和。

下列说法错误的是( )A.原子半径:X>Y>ZB.非金属性:Y>X>WC.Z 的单质具有较强的还原性D.原子序数为82的元素与W 位于同一主族6、甲基丙烯酸甲酯是合成有机玻璃的单体。

()()3322CH C O HCN CH C(OH)CN =+−−→ ()()3324233442CH C(OH)CN CH OH H SO CH C CH COOCH NH HSO −−→++=+ 新法合成的反应: ()33323PdCH C CH CO CH OHCH C CH COOCH ≡++=下列说法错误的是( )(阿伏加德罗常数的值为A N ) A.HCN 的电子式为B.新法没有副产物产生,原子利用率高C.1L0.051mol L -⋅的44NH HSO 溶液中4NH +的微粒数小于0.05A ND.Pd 的作用是降低反应的活化能,使活化分子数目增多,百分数不变 7、铝电解厂烟气净化的一种简单流程如下:下列说法错误的是( )A.不宜用陶瓷作吸收塔内衬材料B.采用溶液喷淋法可提高吸收塔内烟气吸收效率C.合成槽中产物主要有36Na AlF 和2COD.滤液可回收进入吸收塔循环利用8、海水电池在海洋能源领域备受关注,一种锂-海水电池构造示意图如下。

高三生物综合训练(二)

高三生物综合训练(二)

高中学生学科素质训练高三生物综合训练(二)本卷分第Ⅰ卷(选择题)和第Ⅱ卷(非选择题)两部分第I卷(每题只有一个选项符合题目要求,本题共52分)1.下列哪类生物肯定具有细胞结构()A.原始生命B.原核生物C.烟草花叶病毒D.大肠杆菌T4噬菌体2.单位质量的脂肪与糖类相比,其所含元素与有耗氧量的特点是,前者()A.含C、H原子多,氧化时耗氧多B.含C、H原子多,氧化时耗氧少C.含C、H原子少,氧化时耗氧多D.含C、H原子少,氧化时耗氧少3.小孩能合成与母亲相似的脂肪酶,这主要与母体内含有哪类物质有关()A.脂类B.蛋白质C.糖类D.核酸4.通常情况下,分子式为C63H103O45N17S2的多肽化合物中最多含有肽键()A.62个B.2个C.17个D.16个5.在细胞周期中每个染色体只含有一个双链DNA分子的时期是()A.间期和前期B.前期和中期C.中期和后期D.后期和末期6.把青蛙和小白鼠从25℃的室温中移至5℃的环境中,这两种动物的需氧量的变化是()A.两种动物的耗氧量都减少B.两种动物的耗氧量都增加C.青蛙的耗氧量减少,小白鼠耗氧量增加D.青蛙的耗氧量增加,小白鼠耗氧量减少7.一分子CO2从叶肉细胞的线粒体基质中扩散出来,进入一相邻细胞的叶绿体基质内,共穿越过的生物膜层数是()A.5 B.6 C.7 D.88.下列各类生物在细胞代谢过程中,能产生相应化合物的一项是()A.乳酸菌产生CO2B.人体产生酒精C.酵母菌产生乳酸D.甘薯产生丙酮酸9.通过某些微生物的作用,可能把空气中游离的氮素固定转变为含氮化合物,这一过程就是一种生物固氮作用。

为确定固氮的最终产物,做了如下两个实验:(1)把固氮菌培养在含15N2的空气中,细胞迅速固定氮素,短期内细菌的谷氨酸中出现大量的15N。

(2)如果把细菌培养在含有15NH3的培养基中,固氮能力立刻停止,但吸入氨态氮迅速转入谷氨酸中。

由此可以推断,该微生物固氮最终产物是()A.NH3B.NO2C.NO3D.谷氨酸10.人体在下列哪一活动过程中ADP含量会增加()A.K+被吸收进入肾小管壁的上皮细胞的过程B.葡萄糖进入红细胞的过程C.线粒体中的氢与氧结合生成水的过程D.甘油吸收进入消化道上皮细胞的过程11.对于育种来说,有性生殖的主要优点是能产生()A.更多的后代B.更多各种各样的后代C.健康的后代D.发育更快的后代12.每个四分体(2N生物)含有染色体、着丝点、染色单体的数目分别是()A.2、2、4 B.4、4、4 C.2、4、4 D.2、4、213.用生长素处理的方法培育无籽番茄,其无籽的原因是()A.发生了染色体变异B.不能进行正常的减数分裂C.不能形成纺缍体D.没有经过受精作用14.蛙胚发育至原肠胚时,说法不正确的是()A.胚体已经形成胚孔B.胚体已形成中胚层C.胚体的原肠腔由内胚层细胞围成D.胚体具有囊胚腔和原肠腔15.将4株长势相同,具有顶芽的健壮植株分别进行如下处理,其中哪一处理办法最有利于侧芽发育成枝条()A.去顶芽后,在断口上放一块琼脂小块B.去顶芽后,在断口上放一块富含生长素的琼脂小块C.不去顶芽,在侧芽涂以含低浓度生长素的琼脂D.不去顶芽,在侧芽上涂以琼脂16.把二龄猎蝽若虫的某腺体切除后,该若虫发育加快,这种腺体分泌的激素是()A.保幼激素B.脑激素C.性外激素D.蜕皮激素17.某生物有3对等位基因AaBbCc分别位于3对同源染色体上,在精巢内,若有4万个初级精母细胞,经减数分裂后能形成abc的精子个数约有()A.1万个B.2万个C.4万个D.8万个18.在双链DNA分子中,有腺嘌呤P个,占全部碱基的比例为N/M(M>2N),则该DNA 分子中鸟嘌呤的个数为()A.(PM/N)-P B.(PM/2N)-P C.PM/2N D.N-2P/2M19.根据下表中的内容,指出下列哪一项是色氨酸的密码子20.采用A、B、C、D中的哪一套方法,可以依次解决①~④的遗传学问题()①鉴定一只白羊是否纯种②在一对相对性状中区分显隐性③不断提高小麦抗病品种的纯合度④检验杂种F1的基因型A.杂交、自交、测交、测交B.测交、杂交、自交、测交C.测交、测交、杂交、自交D.杂交、杂交、杂交、测交21.基因型分别为aaBbCCDd和AABbCCdd的两种豌豆杂交,其子代中纯合体的比例为()A.1/4 B.1/8 C.1/16 D.022.在某一生态系统内,蛇和猫头鹰捕食鼹鼠和田鼠,如果鹰在这一生态系统内出现,就要成为另一种捕食动物。

2024届新高三开学摸底考试综合训练卷

2024届新高三开学摸底考试综合训练卷

2024届新高三开学摸底考试综合训练卷注意事项:1.答卷前,考生务必将自己的姓名、考生号等填写在答题卡和试卷指定位置上。

2.回答选择题时,选出每小题答案后,用铅笔把答题卡对应题目的答案标号涂黑。

如需改动,用橡皮擦干净后,再选涂其他答案标号。

回答非选择题时,将答案写在答题卡上。

写在本试卷上无效。

3.考试结束后,将本试卷和答题卡一并交回。

一、选择题:每题3分,共48分风蚀气候因子指数是气候影响风蚀可能程度的度量,指数越大,越有利于风蚀的进行,是风速、降水量、气温、相对湿度等气象因子的综合反映。

下图是吉林省风蚀气候因子指数累计曲线图。

据此完成下面小题。

1.吉林省风蚀最严重和最轻的月份分别是()A.12月1月 B.4月7月 C.12月8月 D.6月8月2.影响吉林省夏季风蚀气候因子指数变化的主要原因是()A.降水增加 B.风速减小 C.湿度减小 D.气温升高青海S藏毯生产公司成立于2007年,产品远销欧美、中东等40多个国家。

近年来S公司通过引进世界著名纱织企业F集团入驻青海,实现了从原料加工到产品出口的整个生产流程。

目前S公司推出了个性化定制藏毯项目,可根据用户需求进行设计与快速制作。

读下图,完成下面小题。

3.S公司引进F集团的最主要目的是()A.利用共用基础设施,形成产业集聚B.提高藏毯研发水平和质量C.扩大市场需求,促进当地经济发展D.减少运输环节,降低生产成本4.个性化定制对S公司发展的影响主要表现在()A.提高公司知名度和经济效益 B.优化产品结构,加快产业转型C.进一步加强与F集团的合作 D.提高研发能力,保持品牌优势黄河下游河床由于泥沙淤积,在大堤的束缚下不断抬高形成地上悬河。

某悬河段两岸农民曾在主河槽两侧自发加建新堤。

下图为该悬河段横断面示意图。

据此完成下面小题。

5.农民在大堤内自发加建新堤的主要目的是()A.增加流速,提高河段冲淤能力 B.减少水流对黄河大堤的冲刷C.促进泥沙淤积,提高土壤肥力 D.扩大耕地面积,提高经济收入6.自建堤可能导致该河段()A.洪水发生频率增加 B.河道摆动更加频繁C.大堤冲决风险减小 D.形成新一级的悬河土壤容重指一定容积的土壤烘干后质量与烘干前体积的比值,有机质含量较高的土壤疏松多孔。

2024届江苏省南京市高三下学期考前综合训练题(二)英语试题(含答案)

2024届江苏省南京市高三下学期考前综合训练题(二)英语试题(含答案)

南京市2024届高三年级考前综合训练题( 二)英语2024.05第二部分阅读(共两节,满分50分)第一节(共15小题; 每小题2.5分,满分37.5分)阅读下列短文,从每题所给的A、B、C、D四个选项中选出最佳选项。

For centuries, the “Big Four” diamonds, red stones, green stones and blue stones—ruled the gem (珠宝) world. When tanzanite first appeared in 1967, it became a hit. Unlike those other stones, which are mined all over the world, tanzanite can be found in only one place on Earth: in the remote Merelani Hills in the shadow of Mt. Kilimanjaro in Tanzania, Africa.Gem of the century meets deal of the century. With its remarkable rarity and unique gemstone qualities, it’s no wonder that experts have called it “the gemstone of the 20th century”. In recent years, top-quality tanzanite gems have fetch ed higher prices at auction (拍卖会) than the Big Four! But because we buy direct and use our own designers, we are able to offer you this rare beauty for ONL Y $59!What makes tanzanite so ir resistible to gem experts? Part of its appeal is the beautiful violet blu e color. Tanzanite is also trichroic—which means that three different colors are visible when the stone is viewed from different angles.A gemstone found in only one place on earth means supply is extremely limited. Get your hands on the Karatu Tanzanite Ring before they’re gone!Your satisfaction is 100% guaranteed. Experience the rare beauty of the Karatu Tanzanite Ring for two months. If you’re not completely impressed, simply send it back within 60 days for a complete return of the sale price. We want you to feel like you got the deal of the century!21. What is tanzanite?A. A ring brand.B. A kind of stone.C. A place in Africa.D. A deal of the century.22. What is special about tanzanite?A. Its bright color.B. Its high price.C. Its long-standing reputation.D. Its unique place of origin.23. What is the purpose of the text?A. To promote goods.B. To introduce a gem.C. To present a discovery.D. To recommend return service.BRepositioning the light for the third time, Reilly leaned (倾斜) the phone at an angle she thought would make her face look skinny. She prepared herself for her best smile in3,2, 1!Finally! A picture she can work with. Everyone else in school had a social media account and nobody knows how hard she tried to eve ntually get mom’s permi ssion. She had been sitting up her account for days, and the picture of herself was the final touch.She had worked cautiously creating her profile. Her hometown was boring, so she filled in a more exciting one several towns over. Her job was nonexistent since she was only 14, but she filled in “Accountant”. Why not? Seemed like a cool job. And she was getting good at making a perfect account here, so “accountant” was fitting.She wrote her first post. Then deleted it. She wanted to avoid sounding like she just started an account. She thought of something brilliant.“Hey new account here, had to. You know, locked out of my other one. Add me here!”Now people would think she had to start this one because an old one got hacked (非法入侵),and they just didn’t know she had none before. Then the “friend spread” would happen. The website would start suggesting her page to friends of friends until she grew her list to a respectable size.It was starting already! Friend requests on her list. A comment! “Gorgeous (漂亮的) girl!” It was from Amy, in her science class. Reilly felt gorgeous.At school, Reilly looked around wondering who saw her new profile.“Hey. Saw your new account,” Nora, her best friend, said from somewhere behind her.“How does it look?” Reilly asked.“It looks pretty cool. But, I almost didn’t know it was you, Reilly,” Nora smiled. “And just in case you forget, you are good enough as you are.”24. What was Reilly busy doing these days?A. Looking for a cool jotB. Chatting with friends online.C. Setting up a social media account.D. Improving her photography skills.25. Why did Reilly rewrite her post?A. To sound more experienced.B. To add something brilliant.C. To unlock her old account.D. To ensure safety of her page.26. What did Reilly feel gorgeous about?A. Making a new friend in real life.B. Having a science lesson with Amy.C. Creating a profile totally on her own.D. Expanding her influence on social media.27. What does Nora’s comment imply?A. Reilly should appreciate her true self.B. Reilly should pursue the best version of herself.C. Reilly shouldn't be too proud of what she's done.D. Reilly shouldn't forget to show the good side of her.CA new network of dedicated antennas (天线) in Africa will lend insight into the damage that storms of charged particles (粒子) from the sun make on satellite and radio communications. Zambia set up its first such sensor in March —one of eight multifrequency receivers being stationed around Africa, in addition to four already operating in South Africa. Kenya and Nigeria will set up their receivers by the end of the year.The Space Weather network that extends over Africa will provide real-time data on how solar storms distort (扭曲) the ionosphere, the charged outer layer of Earth's atmosphere. This distortion can have dangerous consequences, says Mpho Tshisaphungo, a space weather researcher at the South African National Space Agency (SANSA). Signals between crucial satellites and the ground pass through this region, where charged particles can cause interference (干扰). Also, high-frequency radio signals (often used in defense and emergency services communications) have to bounce off the ionosphere; Tshisaphungo notes that when solar storms change the layer, “the radio signal may eithe r be weakened, delayed or absorbed by the iono sphere.”“While there are data available from international space weather programs, if you want to look at what’s happening on the African continent, then you need to take measurements in Africa,” says John Habarulema, a space scientist at SANSA. Habarulema’s team developed a model last year that maps electron density (电子密度) in the ionosphere and fills in measurement gaps. The new local receivers will boost this model's accuracy and let it describe fluctuations (波动) over the full continent. “We need to have the global perspective and put that data into our global models,” says Terry Onsager, a U.S. physicist. “But at the same time, space weather disturbances can vary enormously from location to location.” And it is becoming increasingly important to model the ionosphere’s behavior, he says, because “we’re getting more and more reliant on techmologies that are reliant on space weather.”28. What is the function of the newly-set antennas in Africa?A. To prevent possible distortion of the ionosphere.B. To analyse the weather changing records of the region.C. To improve internet connectivity in African rural areas.D. To monitor solar storms’ effects on radio communications.29. Which of the following is a “dangerous consequence” according to paragraph 2?A. Satellites may be destroyed.B. Crucial signals may be blocked.C. Bad weather may strike the earth.D. Charged particles may be weakened.30. What is paragraph 3 mainly about?A. The development of global weather models.B. The factors of accurate space measurement.C. The importance of collecting global climate data.D. The necessity of building multi frequency receivers in Africa.31. What is the best title for the text?A. The sun takes people on earth by stormB. Joint efforts in need to deal with solar stormsC. New space weather network extends over AfricaD. Africa on board to protect radio communicationsDHow could anyone dislike giving and receiving gifts? A good gift can be totally life changing. Gifts are so meaningful that some people identify “receiving gifts” as their primary“love language”.Indeed, on the surface, gift-giving occasions seem like wonderful opportunities to experience and create delight. But according to a 2023 survey, gift-giving and receiving is actually the least popular love language overall.The problem is that occasions that involve gift giving are full of uncertainty. If it’s an occasion like Christmas, where people are shopping for each other at the same time, people might still be nervous about whether the gift they give will be in the same category as the gift they will also receive. For instance, you don’t want to give someone a gag (恶作剧) gift when they're giving you a sincere, heartfelt gift. Mismatched approaches to gift-giving are a common recipe for awkwardness.There can also be enormous uncertainty around how your gift will be experienced by the receiver. Imagine that a close friend is showing some signs of seasonal affective disorder, and you’re giving him a therapy (疔法) lamp as a gift. True, he may very well be appreciative, indicating that this is “just what he needed.” But what if he interprets the gift as an unwelcome piece of commentary on his affective state? One could imagine a reaction along the lines of “Gosh, I’m sorry I’ve been so unpleasant to be around,” The message we send is not necessarily the same as the message received.Worst of all, there’s the anxiety that comes with receiving gifts. If you are like me, you may have found yourself in a setting where you expect a lot of well-meaning but disappointing gifts are headed your way. There can be some fear that comes with knowing that you'll soon need to perform joy and appreciation. Even worse, you might worry that the gift-giver will detect your in sincerity, wounding them in the process.It's not all bad, of course. When done carefully, gift-giving can be a wonderful way to draw people closer together, in a lasting way.32. Gift giving is full of uncertainty because ______.A. people prepare insincere gifts for othersB. the gifts they give are of the same categoryC. people shop for gifts for different occasionsD. mismatched gift- giving frequently happens33. An example of the therapy lamp is used to illustrate ______.A. trust can be earned through gift-givingB. misunderstanding can arise from gift-givingC. harmony can be achieved through gift-givingD. depression can be a byproduct of gift-giving34. What makes a gift-receiver most anxious?A. Expressing disappointment over the gifts.B. Having pretended delight at the gifts uncovered.C. Expecting well-intentioned gifts from friends.D. Fearing to extend appreciation for the gifts.35. What is the author’s at titude towards gift giving?A. Supportive.B. Opposed.C. Objective.D. Unclear.第二节(共5小题;每小题2.5分,满分12.5分)阅读下面短文,从短文后的选项中选出可以填入空白处的最佳选项。

2023届高三语文复习:综合训练——陶渊明

2023届高三语文复习:综合训练——陶渊明

综合训练----陶渊明一、语用试题(一)阅读下面的文字,完成小题。

陶渊明笔下的桃花源是被审美的汁液浸泡、又为理想的光环所笼罩着的山水,它是作者幻化出的_______________。

在当代中国,无论东西南北,都能_______________找到“桃花源”。

不同的“桃花源”,折射出人们对理想家园不同的理解认知。

但每一个“桃花源”里似乎都有陶渊明的影子,真可谓一处桃源“一陶翁”。

陶渊明在归隐前也不是没有参与过政治,读书人谁不想建功立业?他一上任就在自己从政的小舞台上_______________地搞改革,却引来了上级监察和考核官员政绩的官吏来找麻烦。

陶渊明大怒:“我安能为五斗米折腰?”连夜罢官而去。

从此,他就这样一直在乡下读书,思考,种地。

终于在他弃彭泽令回家16年后的57岁时写成脍炙人口的《桃花源记》。

陶渊明勾勒出一个理想社会,让人们不断去追求,但他不是政治家;他不是专门的哲学家,却给出了人生智慧,设计了一种最好的心态,让人们得到解脱;他描绘了一幅最美的山水图,让人们不断地去寻找,但他不是专门的游记作家。

如果真要说专业的话,陶渊明只是一个诗人,他开创了田园诗派,用美来净化人们的心灵。

1.请在文中横线处填入恰当的成语。

2.下列各句中标点符号使用错误的一项()A.但每一个“桃花源”里似乎都有陶渊明的影子,真可谓“一处桃源一陶翁”。

B.终于在他弃彭泽令回家16年后的57岁时写成脍炙人口的“桃花源记”。

C.“真没治!”“北京话”陷在姑娘的包围圈里,不知所措地嘟囔着。

D.接着又听得毕毕剥剥的鞭炮,是四叔家正在“祝福”了。

3.调整文中划横线的语句,变成句意、句式合理的整句。

(二)阅读下面的文字,完成下面小题。

陶渊明在《五柳先生传》中有一句关于读书的名言:“好读书,不求甚解;每有会意,便欣然忘食。

”陶渊明所指在于体悟文章的精义而非①_____________,不能死抠字眼儿。

这个“求”字应作“寻求”解而非“要求”解,即不以“甚解”作为“好读书”的目的。

高三语文综合训练测试题及答案

高三语文综合训练测试题及答案

高三语文综合训练测试题及答案备考语文考试要多做语文试题,多做语文试题可以熟悉语文知识点和积累知识,这样才能考得好成绩。

以下是小编给你推荐的高三语文综合训练测试题及参考答案,希望对你有帮助!高三语文综合训练测试题一、(共18分,每小题3分)1.下列词语中加粗的字,读音有误的一组是( )A.谙(ān)熟麻痹(bì) 西风东渐(jiān)B.庇(bì)护答(dā)理安步当(dàng)车C.发酵(jiào) 根茎(jìng) 管窥蠡(lí)测D.擂(léi)鼓盥(guàn)洗拾(shè)级而上2.下列各组词语中没有错别字的一组( )A.宁谧瑕瑜可见赝品山青水秀B.喝彩繁文缛节痉挛消声匿迹C.凯觎洪福齐天急躁平心而论D.厮打名不副实瞭望跻身其中3.依次填入下列各句横线处的词语,恰当的一组是( )①国家鼓励各民族互相学习语言文字,国家__________普通话,__________规范汉字。

②制定本法第四章法律责任的指导思想是:对__________本法规定者应该由有关部门责令其限期改正。

③国家通用语言文字法__________了,我们要认真学习、宣传和贯彻、实施它。

A.①推广推行②违犯③颁布B.①推行推广②违反③公布C.①推广推行②违反③颁布D.①推行推广②违犯③公布4.下列各句中,加粗的成语使用恰当的一组是( )A.从郑州到xz,路途遥远,山高水长,要骑车旅游实在不易。

B.一些不法商贩,为了抬高棉花价格,故意囤积居奇,准备善贾而沽。

C.有些私立学校的老师,年龄近七十岁,可谓师老兵疲,教课已力不从心。

D.为了观看灯火晚会,人们纷纷走出家门,家属院已是十室九空。

5.下列各句中,没有语病的一句是( )A.中学生写作文要有真情实感,注意写身边的真人真事,切忌不要胡编乱造。

B.“神舟”号的试飞成功,标志了我国航天技术有着新的发展,对突破载入航天技术具有重要意义。

江苏省盐城市阜宁县东沟高级中学2022—2023学年高三年级高考数学第四次综合训练试卷(解析版)

江苏省盐城市阜宁县东沟高级中学2022—2023学年高三年级高考数学第四次综合训练试卷(解析版)

江苏省盐城市阜宁县东沟高级中学2022—2023学年高三年级高考数学第四次综合训练试卷【参考答案】一、单项选择题。

(本大题共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.已知复数z满足(1﹣i)z=2+2i,则|z|=()A.1B.C.2D.2【分析】利用复数的运算法则、模的计算公式即可得出结论.【解答】解:∵(1﹣i)z=2+2i,∴|1﹣i||z|=|2+2i|,则,∴|z|=2,故选:C.【点评】本题考查了复数的运算法则、模的计算公式,考查了推理能力与计算能力,属于基础题.2.已知M,N均为R的子集,且M⊆∁R N,则∁R M∩N=()A.∅B.M C.N D.R【分析】根据M⊆∁R N可画出Venn图,根据Venn图即可得出∁R M∩N=N.【解答】解:用Venn图表示M,N如下:由Venn图看出,M⊆∁R N,∁R M∩N=N.故选:C.【点评】本题考查了交集和补集的定义及运算,子集的定义,借助Venn图解决集合问题的方法,考查了计算能力,属于基础题.3.将甲、乙、丙、丁4名医生随机派往①,②,③三个村庄进行义诊活动,每个村庄至少派1名医生,A表示事件“医生甲派往①村庄”;B表示事件“医生乙派往①村庄”;C表示事件“医生乙派往②村庄”,则()A.事件A与B相互独立B.事件A与C相互独立C.D.【分析】由古典概型概率计算公式求出P(A),P(B),P(C),P(AB),P(AC),再利用相互独立事件的定义能判断AB;利用条件概率公式计算能判断CD.【解答】解:将甲、乙、丙、丁4名医生派往①②③三个村庄义诊的试验有=36个基本事件,它们等可能,事件A含有的基本事件数为=12,则P(A)==,同理P(B)=P(C)=,事件AB含有的基本事件个数为=2,则P(AB)=,事件AC含有的基本事件数为=5,则P(AC)=,对于A,P(A)P(B)=≠P(AB),即事件A与B相互不独立,故A不正确;对于B,P(A)P(C)=≠P(AC),即事件A与C相互不独立,故B不正确;对于C,P(B|A)==,故C不正确;对于D,P(C|A)==,故D正确.故选:D.【点评】本题考查命题真假的判断,考查相互独立事件的定义、条件概率公式等基础知识,考查运算求解能力,是基础题.4.已知向量,满足=(,1),•=4,则||的最小值为()A.1B.C.D.2【分析】由平面向量数量积运算,结合平面向量模的运算求解即可.【解答】解:由=(,1),则,则,即,则||的最小值为2,故选:D.【点评】本题考查了平面向量数量积运算,重点考查了平面向量模的运算,属基础题.5.已知直线l:x+(a﹣1)y+2=0,,且l 1⊥l2,则a2+b2的最小值为()A.B.C.D.【分析】根据l1⊥l2得出b与a的关系式,代入a2+b2中利用二次函数的性质即可求出a2+b2的最小值.【解答】解:因为l1⊥l2,所以b+(a﹣1)=0,所以a=1﹣b,所以a2+b2=+b2=4b2﹣2b+1=4+,所以当时,a2+b2取最小值为.故选:A.【点评】本题考查了两直线垂直的应用问题,也考查了利用函数求最值的应用问题,是基础题.6.为庆祝神舟十三号飞船顺利返回,某校举行“特别能吃苦,特别能战斗,特别能攻关,特别能奉献”的航天精神演讲比赛,其冠军奖杯设计如图,奖杯由一个半径为6cm的铜球和一个底座组成,底座由边长为36cm 的正三角形铜片沿各边中点的连线向上折叠成直二面角而成,则冠军奖杯的高度为()cm.A.B.C.D.【分析】A,B,C在底面内的射影为M,N,P分别为对应棱的中点,求解△ABC外接圆圆心O的半径r,转化求解O1到平面DEF距离,推出结果.【解答】解:由一个半径为6cm的铜球和一个底座组成,底座由边长为36cm的正三角形铜片沿各边中点的连线向上折叠成直二面角而成,设:A,B,C在底面内的射影为M,N,P分别为对应棱的中点,∴,∴△ABC是边长为9的等边三角形,设△ABC外接圆圆心O,半径r,则,∴,,∴O1到平面DEF距离:9,∴冠军奖杯的高度为:.故选:C.【点评】本题考查空间点、线、面距离的求法,考查转化思想以及计算能力,是中档题.7.已知双曲线的左、右焦点分别为F1、F2,过F1的直线与双曲线E的两条渐近线分别交于M,N,若,且∠F1NF2=90°,则双曲线E的离心率为()A.B.4C.D.6【分析】设N(x1,y1)则,利用,M在,求得N,则,,由,即可求双曲线离心率.【解答】解:设N(x1,y1),,∵N在,M在,∴∴,即N,则,,∴,∴,∴,故选:B.【点评】本题考查了双曲线的性质,考查了计算能力、转化思想,属于中档题.8.已知定义在R上的奇函数f(x)满足f(1+x)=f(1﹣x),已知当x∈[0,1]时,f(x)=2x﹣a,若f(x)=m|x﹣1|恰有六个不相等的零点,则实数m的取值范围为()A.(,)∪[﹣,﹣]B.(,)∪[﹣,]C.(,)∪{﹣}D.(,)∪{﹣}【分析】利用函数的奇偶性以及函数的对称性,推出函数的周期,结合函数的图象,函数零点个数,列出不等式求解即可.【解答】解:定义在R上的奇函数f(x),满足f(1+x)=f(1﹣x),则f(x)关于x=1对称,f(0)=0,当x∈[0,1]时,f(x)=2x﹣a,所以a=1,y=m|x﹣1|关于x=1对称,f(x)=m|x﹣1|有6个根,∴f(x)=m(x﹣1)在x∈(1,+∞)有三个根,f(2+x)=f(﹣x)=﹣f(x),函数的周期T=4,作出f(x)图象如图:当m>0时,k AC<m<k AB,则;点m<0时,,∴m的取值范围,故选:D.【点评】本题考查函数与方程的应用,零点个数的判断,考查数形结合以及计算能力,是中档题.二、多项选择题。

黑龙江省大庆市实验中学2020届高三5月综合训练(一)语文试题 Word版含解析

黑龙江省大庆市实验中学2020届高三5月综合训练(一)语文试题 Word版含解析

黑龙江省大庆市实验中学2020届高三5月综合训练(一)语文试题 Word版含解析请注意:此试卷分第I卷(选择题)和第II卷(非选择题)两部分,共12页。

满分135分,考试时间120分钟。

第I卷(选择题)注意事项:1. 答第I卷前,考生务必将自己的姓名、准考证号、座位号填写在答题卡上,并在规定位置粘贴考试条形码。

2. 选择题每小题选出答案后,用铅笔把答题卡上对应题目的答案标号涂黑,如需改动,用橡皮擦干净后,再选涂其他答案标号。

不能答在试卷上。

第一部分听力(共两节,满分30分)做题时,先将答案标在试卷上。

录音内容结束后,你将有两分钟的时间将试卷上的答案转涂到答题卡上。

第一节(共5小题;每小题1.5分,共7.5分)听下面5段对话。

每段对话后有一个小题,从题中所给的A、B、C三个选项中选出最佳选项。

听完每段对话后,你都有10秒钟的时间来回答有关小题和阅读下一小题。

每段对话仅读一遍。

1. What is the woman going to do?A. Clean the floor.B. Buy some cleaner.C. Go to the supermarket.2. Where does the conversation probably take place?A. At a hospital.B. At a gas station.C. At a hotel.3. What does the man think of the woman’s plan?A. Irresponsible.B. Practical.C. Difficult.4. What does the woman mean?A. She’s not interested in the party.B. She wants to leave the party.C. She enjoys the party.5. Who is arriving?A. The woman’s sister.B. The woman’s cousin.C. The woman’s aunt.第二节(共15小题;每小题1.5分,共22.5分)请听下面5段对话或独白。

2024届江苏省南京市高三下学期考前综合训练题(一)英语试题

2024届江苏省南京市高三下学期考前综合训练题(一)英语试题

2024届江苏省南京市高三下学期考前综合训练题(一)英语试题一、阅读理解The Shanghai Museum has announced its 2024 exhibition list, and “Top of the Pyramids, Ancient Egyptian Civilization Exhibition” will be the most anticipated.Running from July 19 to August 17, 2025, the one-year exhibition features the world’s largest and Asia’s highest level of ancient Egyptian cultural relics (文物) seen outside the country of Egypt. More than 95 percent of the Egyptian relics in this show are coming to Asia for the first time. It is also China’s first cooperation with the Egyptian government.Occupying three exhibition halls on the first floor at the Shanghai Museum, the exhibition will display nearly 500 groups of 800 ancient Egyptian relics.To be in concert with this exhibition, “Disappearing Pharaoh Khufu”, an immersive (沉浸的) exhibition, will be held at the same time on the second floor at the museum. Through the top virtual reality technology, visitors are able to travel back to the mysterious Egyptian civilization 4,500 years ago through a 45-minute digital experience.Besides this exhibition, the Shanghai Museum will also arrange a group of overseas exhibitions to spread traditional Chinese culture and art to more people. Among them, “China’s Han Dynasty cultural relics exhibition” will be on display in Hungary from January to June, showing the artistic and cultural achievements during the Han Dynasty. “The World of Marco Polo” will be shown from April to September in Italy and “The Beauty of Chinese Ceramics” in Japan from October to March, 2025.1.What’s special about the Egyptian cultural relics show?A.It displays relics hardly shown in Asia before.B.It features a VR experience in 3 exhibition halls.C.It marks Egypt’s first overseas exhibition of relics.D.It witnesses the long-term China-Egypt cooperation.2.Which exhibition will be shown in Italy?A.Disappearing Pharaoh Khufu.B.China’s Han Dynasty cultural relics exhibition.C.The World of Marco Polo.D.The Beauty of Chinese Ceramics.3.Where is this text probably taken from?A.A travel schedule.B.A local newspaper.C.A museum brochure.D.An official document.Last year I averaged 9,370 steps a day. My smartphone counted. My daily aim? Ten thousand steps. Because goals.Yet the concept of taking 10,000 steps a day to maintain health is rooted not in science but in marketing. In the 1960s, a Japanese company invented an early pedometer (计步器). Because the Japanese character for “10,000” looks like a person walking, the company called its device the 10,000-step meter. “It was just sort of a catchy phrase,” says I-Min Lee, a scientist at Harvard Medical School.In 2019, Lee published a study investigating the actual effects of meeting the 10,000-step goal. The result? Some movement is good, and more is better, but the benefits decline at some point. Your personal peak depends on your age. People younger than 60 should indeed walk 8,000 to 10,000 steps a day to get the best benefits in terms of lifespan (寿命). People older than 60 show the most benefit between 6,000 and 8,000 steps.The difference is energy consumption. “We basically relate energy consumption to health outcomes,” Lee says. Walking for 60 minutes at 3.3 miles an hour and running for 30 minutes at 6 miles an hour use the same amount of energy. “The older you are, the less efficient you are with your steps,” Lee says. “Per step, older people use more energy.” Thus, they need fewer steps to achieve the same benefits.Newer studies are moving beyond death rates to ask questions about the way steps may help to control blood pressure and weight. The goal, after all, is not just to live longer but to live healthier. Ful results are not in yet, so Lee’s advice is: “Tailor your steps according to what you are trying to achieve and according to who you are.”4.The concept of taking 10,000 steps daily arises from ______.A.the findings of scientific surveys B.the formation of a Japanese characterC.a marketing trick D.a healthy habit5.What does Lee’s research find?A.Walking step targets vary with age.B.Walking more makes one look younger.C.Old people benefit more from walking longer.D.Reaching 10,000 steps daily appeals to many.6.What is paragraph 4 mainly about?A.The difference in energy consumption among age groups.B.The contrast between the benefits of walking and running.C.The reason for setting different step goals based on age.D.The link between energy consumption and health outcomes.7.What will newer studies focus on?A.How steps change one’s lifestyle.B.How steps affect one’s lifespan.C.How steps reduce death rates.D.How steps boost healthy living.We go through life assuming we’re in charge of our own minds —until temptation (诱惑) strikes. Few things better illustrate how little control we really have. You can know exactly what you should do (decline the second slice of cake or the third cocktail), but that hardly seems to matter when the urge arises. More self-discipline is rarely the answer, though. Instead, if you can understand what’s going on inside your head when temptation comes, you’ll be far better placed to make a healthier choice.Sometimes, you need to push yourself, the idea behind which, in psychology, is to make the better choice the easier choice. (School pupils eat more healthily, it’s been shown, when the salads are within easier reach than the chips.) So, instead of relying on willpower, stop keeping ice creams in your freezer! Use StayFocused or similar apps to block distracting websites. Change your environment, and temptation will be a non-issue.For every person, behind every bad habit, there's a reasonable desire: some people eat or drink too much because they're lonely, or smoke to get a break from a busy schedule. Once you’ve uncovered this underlying need, find a different way to meet it: call a friend; take a coffee break instead of a cigarette break. There’s nothing wrong with the need—only with the way you’recurrently meeting it.It’s a strange truth that we’ll break all sorts of promises to ourselves— yet most of us would never fail to show up at a prearranged meeting with a friend. Involve others in your temptation-resistance efforts, whether it's asking someone to check in weekly to see if you’re sticking to your plan, or never going shopping alone if you’re subject to impulse purchases. Best of all, launch a joint plan, in which two of you decide to give up a bad habit. That turns a challenge into a fun game.8.What does “that” mean in paragraph 1?A.Temptation.B.Self-awareness.C.Choice.D.Self-motivation.9.Which should be a good choice if you feel worn out from a packed timetable?A.Exercise strong willpower over it.B.Keep ice creams within easy reach.C.Use StayFocused to refresh yourself.D.Chat with a friend over a cup of coffee.10.What does the author suggest you do according to paragraph 4?A.Seek partners’ support.B.Leave challenges behind.C.Keep your promises.D.Say no to playing games.11.What is the text mainly about?A.What causes temptation.B.How to keep temptation at bay.C.Why urges set in.D.How to keep life under control.While lifting weights one day, I heard a loud click on my back. I was rushed to the emergency room, where I was told the pain would eventually disappear. It didn’t, however. What I’ve learned about pain since then — both as a patient and as a physician — has me questioning how we treat it.Vania Apkarian, one of the world’s leading pain researchers, told me the classic idea is that pain continues as long as the injury does, but the injury and pain it produces end up being separate. “Although MRIs (核磁共振) are reliable indicators of injury, they are not reliable indicators of pain,” he says. A review of 33 studies found that among a group of 20-year-olds without any backpain, 37 percent had disc degeneration (腰椎间盘退化) on MRI. And in people whose backs hurt, MRI results have absolutely no connection with their pain.This is a really big deal: millions of people in the U.S. alone get MRIs for back pain. Yet 5 percent of them were medically justified, and of those who received MRIs, 65 percent received potentially harmful advice — including calls for risky back surgery that probably wouldn’t have resolved their pain. I could have been one of those people, yet when I took my MRI films to an experienced surgeon, he told me an operation might leave my back worse off.If MRI doesn’t explain long-lasting pains, what does? One major factor is our mentality. A recent trial has revealed the power of therapies (疗法) that target how we think about discomfort. People who are anxious about being in pain are twice as likely to develop long time pain.A thorough examination of pain and its origins should encourage efforts to make sure everyone in pain receives kindness and respect, as well as access to more than pills and surgical procedures. Fully accepting the complexity of pain can open the door to new and innovative ways to ensure that even if we hurt, we don’t have to suffer.12.What does paragraph 2 imply?A.Back pain is not necessarily an emergency case.B.MRI tests can’t give a full picture of one’s condition.C.Minor injuries can lead to severe pain.D.Bone problems begin to bother the young.13.What can we learn from the author’s personal story?A.He found his back surgery medically justified.B.The surgeon misled him about the back injury.C.A surgery might do him more harm than good.D.Being a physician helps him treat his back pain.14.According to the author, what should a patient with long-lasting pain do?A.Consult professionals to receive surgeries.B.Have painkillers as early as possible.C.Take comprehensive MRI examinations.D.Acquire a thorough understanding of the pain.15.What is a suitable title for the text?A.Origins of pain.B.Killers of pain.C.Victims of pain.D.Effects of pain.On a beautiful Saturday morning, I went for a run in the park. I got to about a mile and a half, through rose gardens and around trees. 16 . The next thing I remember was two worried faces looking down at me.They were calling an ambulance, while a black Labrador was licking my face! I felt pain in my back. Later, I learnt the dog chasing a squirrel ran straight into me. I was thrown into the air and landed on my back. My usual run had turned into a trip to a nearby hospital. Luckily, aside from minor injuries, I was OK. 17 : what if it had been a car? How can we ever see these things coming?The truth is that sometimes, life really is out of our control. Then what do we do when it does? First, do a gratitude stocktake (盘点): my friend Denise, would look after my son Jett; gratitude that it was a dog, not a car, and I lived to tell the tale.The next, who and what measures up? These uncontrollable moments in life are also the times when you find the greatest clarity. 18 .The ones that make the effort: show up; come round; be there.19 see it as an opportunity to step back and reassess. Is your time and love focused on the things that truly matter? Are there conversations left unsaid? What do you want to do differently? If it all ended tomorrow, would your life have been well lived? I hope so. 20 ! A.But it crossed my mindB.Unless misfortune falls upon youC.Then I‘m not entirely sure what happenedD.You see the people who are really there for youE.When the breath is literally knocked out of youF.I didn’t expect a Labrador would transform my lifeG.If not, it’s time to start living and watching out for dogs二、完形填空In 2014, Amy collapsed from a brain hemorrhage (脑溢血) while working. After a year recovering at home, she 21 a course with the ambition to become a 22 .However, occasional vision disturbance was still 23 , influencing the amount of 24 she could give to the course. Further complications (并发症) left the young artist almost completely blind, making it difficult to see a whole figure. It’s particularly 25 because it seemed to 26 her optimism to be a painter!One morning, when watching the sunrise, she suddenly felt a sense of 27 . She realized that she may not 28 a whole face anymore, but it shouldn’t stop her from putting what she could see on canvas (画布). The following years, she 29 her special art journey.“Strangely, my experience has increased my 30 when drawing, enabling me to catch a character better,” she explains. “People often speak highly of the detail and sensitivity of the character. I have more determination and appreciation for my 31 . These are 32 I wouldn’t have had without everything I’ve 33 .” For her new touring exhibition, she has produced a series of artworks based on her visual experience. “In the 34 interaction between what I can and cannot see lies my perspective on the world.”Sometimes, we can tur a loss into a gain: something unique and individual that has been gifted to us by never 35 .21.A.made use of B.looked forward to C.signed up for D.took pride in 22.A.teacher B.doctor C.worker D.painter 23.A.present B.unnoticed C.unusual D.strange 24.A.credit B.energy C.instruction D.donation 25.A.disappointing B.exciting C.inspiring D.depressing 26.A.ruin B.boost C.spread D.express 27.A.achievement B.thankfulness C.belongings D.security 28.A.see B.touch C.draw D.cover 29.A.shared B.concluded C.started D.recalled 30.A.eyesight B.sensitivity C.taste D.attention 31.A.talent B.choice C.role D.vision 32.A.gifts B.challenges C.awards D.pains33.A.relied on B.gone after C.survived through D.thought of 34.A.active B.misty C.social D.regular 35.A.losing B.leaving C.quitting D.failing三、语法填空阅读下面短文,在空白处填入1个适当的单词或括号内单词的正确形式。

高中学生学科素质训练高三语文综合训练三

高中学生学科素质训练高三语文综合训练三

高中学生学科素质训练高三语文综合训练(三)一、(共18分,每小题3分)1.下列词语中加粗字读音有误的一项是 ( )A.棕榈(lǘ) 香茗(míng) 排难(nàn)解纷B.酝酿(niàng) 潜(qián)力心宽体胖(pán)C.教室(shì) 时分(fân) 良莠(yǒu)不齐D.作(zuō)坊抽屉(tì) 解(xiâ)甲归田2.下列各组词语中,没有错别字的一组是 ( )A.寒暄无事生非震撼常备不懈B.剪彩莫衷一是通辑真知灼见C.饯别相铺相承间谍见微知著D.绵亘鸦雀无声部署名声雀起3.依次填入下列横线处的词语,恰当的一组是 ( )日本首相小泉参拜靖国神社这一错误举动,__________了中日关系的政治基础,______________了中国人民和亚洲广大受害国人民的感情,也_________了日本政府在历史问题上作出的一系列____________表态和承诺。

中方将通过外交途径向日方提出___________交涉。

A.摧毁损害违反郑重严正B.损害伤害违犯庄重郑重C.损害伤害违背郑重严正D.伤害损害违背郑重严正4.下列各句中,加粗的成语使用恰当的一句是 ( )A.法轮功练习者受李洪志精神控制,竟引火自焚,对他们这种糊涂做法,我们真是不可理喻。

B.张老师退休后,一心一意搞根雕创作,他抱残守缺,有化腐朽为神奇的本领。

C.北京申奥成功的消息不翼而飞,全国上下一片欢腾。

D.杂技演员在钢丝绳上颤颤巍巍地走着,如同阪上走丸,让观众为他们捏着把汗。

5.下列各句中没有语病句意明确的一句是 ( )A.美国和德国科学家通过研究发现,飞机在空中飞行,其尾气可直接影响气候变暖B.科学精神就是一种合理的怀疑精神,以怀疑精神开辟通往真理的道路。

C.春风一阵阵吹来,树枝摇曳着,月光、树影也随着树枝晃动起来,发出沙沙的响声。

D.现在,许多青年男女不再以财产多少和门第高低为条件,而以能劳动、有科学文化知识为标准去选择自己的伴侣。

黑龙江省大庆实验中学2020届高三英语综合训练试题三含解析

黑龙江省大庆实验中学2020届高三英语综合训练试题三含解析

黑龙江省大庆实验中学2020届高三英语综合训练试题(三)(含解析)第I卷第一部分:听力(共两节, 满分30分)第一节(共5小题;每小题1.5分, 满分7.5分)听下面5段对话。

每段对话后有一个小题,从题中所给的A、B、C三个选项中选出最佳选项。

听完每段对话后,你都有10秒钟的时间来回答有关小题和阅读下一小题。

每段对话仅读一遍。

1. When does the conversation probably take place? A. At dinner time. B. At lunchtime. C. At breakfast time.2. What should the woman do? A. Talk softly. B. Look for the sign. C. Leave right away.3. What does the woman mean? A. She bought only one ticket. B. The man can use her other ticket. C. She wantsto be the man’s guest.4. What are the speakers probably talking about?A. A movie.B. Some news.C. A car race.5. What is the man going to do?A. Take some photos.B. Get a hair cut.C. Look at some art.第二节(共15题;每小题1.5分,满分22.5分)听下面5短对话或独白。

每段对话或独白后有几个小题,从题中所给的A、B、C三个选项中选出最佳选项。

听每段对话或独白前,你将有时间阅读各个小题,每小题5秒钟;听完后,各小题将给出5秒钟的作答时间。

每段对话或独白读两遍。

听第6段材料,回答第6、7题。

河南省南阳市2020届高三下学期综合训练(1)物理试卷(PDF版)

河南省南阳市2020届高三下学期综合训练(1)物理试卷(PDF版)

物理一、选择题:本题共8小题,每小题6分。

在每小题给出的四个选项中,第14~18题只有一项符合题目要求,第19~21题有多项符合题目要求。

全部选对的得6分,选对但不全的得3分,有选错或不答的得0分。

14.下列说法正确的是()A .α粒子散射实验说明原子核内部具有结构B .在234112H H He x +→+中,x 表示质子C .重核的裂变和轻核的聚变都是质量亏损的放出核能过程D .一个氢原子从1n =能级跃迁到2n =能级,必需吸收光子15.一滑块做直线运动的v t -图象如图所示,下列说法正确的是()A .滑块在3s 末的加速度等于22m/s -B .滑块在2s 末速度方向发生改变C .滑块在2~4s 内的位移与4~6s 内的位移相同D .滑块在0~6s 内的平均速度等于0~2s 内的平均速度16.空间有一水平匀强电场,范围足够大,场中有一粒子源,某时刻释放出速度大小相同的同种带电粒子,速度方向沿垂直于电场的竖直面内各方向,粒子的重力不计,如图所示,则()A .同一时刻所有粒子的动量相同B .同一时刻所有粒子的位移相同C .同一时刻所有粒子到达同一等势面上D .同一时刻所有粒子到达同一水平面上17.传送带在工农业生产和日常生活中都有广泛的应用,例如在港口用传送带装卸货物,在机场用传送带装卸行李等,为人们的生活带来了很多的便利.如图甲所示,为一传送带输送机卸货的简化模型:长为L 的传送带与水平面夹角为θ,传送带以速度逆时针匀速转动。

在传送带的上端轻轻放置一个质量为m 的小物块,小物块与传送带之间的动摩擦因数为(最大静摩擦力等于滑动摩擦力).图乙为小物块运动的v—t 图象.根据以上信息可以判断出()A.小物块开始运动的加速度为B.小物块与传送带之间的动摩擦因数C.时刻,小物块的速度为D.传送带始终对小物块做正功18.如图所示,半径相同、质量分布均匀的圆柱体A和半圆柱体B靠在一起,A表面光滑,重力为G,B下表面粗糙,A静止在水平面上,现过A的轴心施以水平作用力F,可缓慢地将A拉离平面一直滑到B的顶端,整个过程中,B始终处于静止状态,对该过程分析,下列说法不正确的是)()A.开始时拉力F最大为3G,以后逐渐减小为0B.A、B间的压力开始最大为2G,以后逐渐减小到GC.地面受到B的压力逐渐增大D.地面对B的摩擦力逐渐减小19.人类首次发现了引力波来源于距地球之外13亿光年的两个黑洞(质量分别为26个和39个太阳质量)互相绕转最后合并的过程。

高三生物综合能力训练题一

高三生物综合能力训练题一

高三生物综合能力训练题(一)一、选择题(下列各题均有四个选项,其中只有一项符合题意要求)1.人体剧烈运动后,会感到肌肉酸痛,其原因是( )(A)运动过度,肌肉拉伤(B)无氧呼吸,积累乳酸、(C)运动量大,A TP用完(D)磷酸肌酸分解成肌酸2.下列关于线粒体和叶绿体的共同点叙述中,不正确的是( )(A)都是双层膜结构的细胞器(B)都有基质和基粒(C)所含酶的功能都相同(D)都不存在于原核细胞中3.2001年,诺贝尔医学奖授予了英、美三位科学家,因为他们发现了细胞周期的关键分子调节机制。

下列有关细胞周期的论述,不正确...的是( )(A)从一次细胞分裂开始至下次细胞分裂结束为一个细胞周期(B)细胞周期包括分裂间期和分裂期两个阶段(C)从一次细胞分裂结束后开始至下一次细胞分裂结束时止为一个细胞周期(D)在一个细胞周期中,分裂间期所经历的时间长于分裂期4. 下表为无土栽培时所用的一种培养液配方,请指出在所含的矿质元素中,不能被植物再度利用的大量5.市场上出售的无根豆芽(茎轴粗长而根短少),是用一定浓度的生长素溶液处理萌发的绿豆种子而获得的。

生产中,选用的生长素溶波浓度是( )(A)10—l0mo1/L (B)10—8mol/L (C)10—4mol/L (D)10—2mol/L6.人类的红绿色盲基因位于X染色体上,母亲为携带者,父亲色盲,生下4个孩子,其中1个正常,2个为携带者,1个色盲,他们的性别是( )(A)三女一男或全是女孩(B)全是男孩或全是女孩(C)三女一男或两女两男(D)三男一女或两男两女7.下列哪一组动物细胞都失去分裂能力:( )(A)肝细胞和生发层细胞(B)肾脏细胞和骨髓细胞(C)成熟的红细胞和骨细胞(D)神经细胞和生发层细胞8。

将用3H标记的尿苷引入某类绿色植物细胞内,然后设法获得各种结构,其中最能表现有放射性的一组结构是:( )(A)细胞核、核仁和中心体(B)细胞核、核糖体和高尔基体(C)细胞核、核糖体、线粒体和叶绿体(D)细胞核、核糖体、内质网和液泡9.主要由小肠绒毛内毛细淋巴管吸收的物质可以被内分泌腺用来合成:( )(A)乳汁(B)性激素(C)皮脂(D)维生素10. 某一植物经5小时的光照,测得有300mg的氧产生,请推断这段时间肉,植物体内合成葡萄糖的量是:( )(A)281.3mg (B)271.3mg (C)153.7mg (D)280.4mg11.有甲乙两组等量的酵母菌,甲组酵母菌进行有氧呼吸,乙组酵母菌进行发酵,若它们消耗了等量的葡萄糖,则它们放出的CO2之和和与它们消耗的O2的比为:( )(A)1∶1 (B)6∶0 (C)0∶6 (D)4∶312.国外试行用“汽水”(碳酸饮料)浇灌植物,它的作用是:①对植物的呼吸作用有利。

2023届高三语文复习:综合训练——韩愈

2023届高三语文复习:综合训练——韩愈

试题综合训练----韩愈一、语用试题(一)阅读下面的文字,完成下面小题。

站在仰韩阁环视,________,多与两个字有关:一个“古”,一个“韩”——北有韩文公祠,南有韩山古庙、韩江大桥……隔江远望,西南方是潮州古城墙、甲第坊、仁德古庙、韩滨园、青龙古庙……转过身去,东边是笔架山。

从古到今,由东向西,名胜古迹密布,大约可见潮州文化发展特色之一斑。

景点名称有个“韩”字,大都因韩愈而生,而对韩愈的评价,最著名的当然要数苏轼那句“文起八代之衰”。

往前一步理解,潮州人尊崇韩愈,其实就是尊崇文化。

韩愈固然可敬,可敬之处不仅在于他的政绩——从潮州人口口相传的那些故事中,我们知道他是一个务实的官员,尽管因上《论佛骨表》犯颜直谏而被受到朝廷的贬谪,却仍然维持以民为贵、以实为本的政治理念。

事实上,韩愈在潮州仅仅八个月,要说干多少_______的事情,基本上是不可能的。

潮州人之所以紧紧抓住韩愈,很有可能是借题发挥,是利用韩愈这张名片,打出潮州文化的品牌——这个“题”借得好,借得________——韩愈对于潮州的贡献,主要在于他的文人气节、廉官风骨和不断衍生的各种传说,在潮州人的精神发育史上,在潮州人的文化血液里,韩愈________。

尊崇韩愈,就是尊崇文化,还有什么能比“文化”二字更能触动我们的心灵、引起我们的共鸣呢?1.依次填入文中横线上的词语,全都恰当的一项是()A.举目四望感天动地义正词严无孔不入B.目之所及感天动地理直气壮无孔不入C.举目四望惊天动地义正词严无处不在D.目之所及惊天动地理直气壮无处不在2.文中画波浪线的句子有语病,请将修改后的句子写出来。

(二)阅读下面的文字,完成下面小题。

韩愈贡献的第五个方面,①。

《大学》这部经典是《礼记》当中的一篇,在唐以后的思想史上非常重要。

但是原本从汉代到唐代非常长的历史阶段里,②,(),没有特别大的影响。

很早就对《大学》有所关注的是汉代的扬雄,他在《法言》里面对《大学》是有所关注的,但没有产生什么了不起的影响。

高三文科综合阶段训练题及参考答案

高三文科综合阶段训练题及参考答案

试卷类型:B ××市2022 届高三年级阶段训练题文科综合本试卷共16页,47小题,满分300分。

考试用时150分钟。

注意事项:1.答卷前,考生务必将自己的姓名、考生号、试室号和座位号填写在答题卡上。

2.用2B 铅笔将考生号及试卷类型(B)填涂在答题卡相应位置上。

作答选择题时,选出每小题答案后,用2B 铅笔将答题卡上对应题目选项的答案信息点涂黑;如需改动,用橡皮擦干净后,再选涂其他答案。

答案不能答在试卷上。

3.非选择题必须用黑色字迹的钢笔或签字笔作答,答案必须写在答题卡各题目指定区域内相应位置上;如需改动,先划掉原来的答案,然后再写上新答案;不准使用铅笔和涂改液。

不按以上要求作答无效。

4.考生必须保证答题卡的整洁。

考试结束后,将试卷和答题卡一并交回。

第Ⅰ卷一、选择题:本大题共35个小题,每小题4分,共计140分。

在每小题给出的四个选项中,只有一项是最符合题目要求的。

甘蔗产业包括种植、榨糖、糖加工、生物材料、生物肥、发电、饲料等庞大的产业链。

中越边境贫困山区的广西崇左市承接广东甘蔗产业,成为我国蔗糖生产第一大市,占全国总产量的1/5。

该市人口250 多万,有130 多万人靠甘蔗吃饭。

我国甘蔗生产成本约在110~150 元/吨,而世界生产成本约为70~80 元/吨。

据此完成1~3 题。

1.广西崇左市发展甘蔗产业的最突出优势条件是A.位于回归线附近,气候适宜B.土地资源丰富,平原面积广大C.本地和跨境劳动力丰富廉价D.制糖工业发达,接近原料产地文科综合试题第1 页(共16 页)2.与世界相比,崇左市甘蔗生产成本高的最主要原因是A.土地租金较高,成本较高B.机械化水平低,生产效率较低C.热带面积较小,总产较低D.地处边远山区,运输成本较高3.崇左市甘蔗产业向降成本、增效益方向发展的最主要措施是A.扩大种植面积,发挥规模优势B.向大型机械化发展,提升竞争力C.延长产业链,增加产业附加值D.线上与线下销售结合,扩大市场黄河是世界含沙量最大的河流之一。

黑龙江省大庆实验中学2020届高三5月模拟测试理科数学试题(含答案)

黑龙江省大庆实验中学2020届高三5月模拟测试理科数学试题(含答案)

大庆实验中学2020届高三综合训练(一)数学试卷一、选择题:本大题共12小题,每小题5分,共60分.1.已知集合M ={x |﹣1<x <3},N ={x |y =lg (x 2﹣1)},则M ∩N =( ) A .{x |﹣1<x <3}B .{x |﹣1<x <1}C .{x |1<x <3}D .{x |﹣1<x ≤1}2.已知复数z 满足z •(1+2i )=|3﹣4i |(i 为虚数单位),则在复平面内复数z 对应的点位于( ) A .第一象限B .第二象限C .第三象限D .第四象限3.已知a =0.40.3,b =0.30.3,c =0.30.4,则( ) A .a >c >bB .a >b >cC .c >a >bD .b >c >a4.现有甲、乙两台机床同时生产直径为40mm 的零件,各抽测10件进行测量,其结果如图,不通过计算从图中数据的变化不能反映和比较的数字特征是( ) A .极差 B .方差 C .平均数 D .中位数 5.给出如下四个命题:①若“p 或q ”为假命题,则,p q 均为假命题;②命题“若2x ≥且3y ≥,则5x y +≥”的否命题为“若2x <且3y <,则5x y +<”; ③若,a b 是实数,则“2a >”是“24a >”的必要不充分条件; ④命题“若,x y =则sin sin x y =”的逆否命题为真命题.其中正确命题的个数是( ) A .3 B .2 C .1 D .06.在锐角△ABC 中,角A ,B ,C 的对边分别为a ,b ,c ,若b cos C ﹣c cos B =2c •cos C ,则角C 的取值范围为( ) A .B .C .D .7.已知平面向量,,均为单位向量,若,则的最大值是( )A .B .3C .D .8.我国传统的房屋建筑中,常会出现一些形状不同的窗棂,窗棂上雕刻有各种花纹,构成种类繁多的精美图案.如图所示的窗棂图案,是将边长为2R 的正方形的内切圆六等分,分别以各等分点为圆心,以R 为半径画圆弧,在圆的内部构成的平面图形.若在正方形内随机取一点,则该点在窗棂图案上阴影内的概率为( ) A .B .C .D .9.已知函数f (x )是定义在R 上的奇函数,当x <0时,f (x )=2﹣|x +2|.若对任意的x ∈[﹣1,2],f (x +a )>f (x )成立,则实数a 的取值范围是( )A .(0,2)B .(0,2)∪(﹣∞,﹣6)C .(﹣2,0)D .(﹣2,0)∪(6,+∞)10.已知双曲线C:(a>0,b>0)的左、右顶点分别为A,B,左焦点为F,P为C上一点,且PF⊥x 轴,过点A的直线l与线段PF交于点M(异于P,F),与y轴交于点N,直线MB与y轴交于点H,若(O为坐标原点),则C的离心率为()A.2B.3C.4D.511.已知函数,在区间[0,π]上有且仅有2个零点,对于下列4个结论:①在区间(0,π)上存在x1,x2,满足f(x1)﹣f(x2)=2;②f(x)在区间(0,π)有且仅有1个最大值点;③f(x)在区间上单调递增;④ω的取值范围是,其中所有正确结论的编号是()A.①③B.①③④C.②③D.①④12.设函数恰有两个极值点,则实数t的取值范围是()A.∪(1,+∞)B.∪[1,+∞)C.D.[1,+∞)二、填空题:本大题共4小题,每小题5分,共20分.13.二项式(﹣)5的展开式中x﹣2的系数是.14.在今年的疫情防控期间,某省派出5个医疗队去支援武汉市的4个重灾区,每个重灾区至少分配一个医疗队,则不同的分配方案共有种.(用数字填写答案)15.已知抛物线y2=4x的焦点为F,准线为l,过点F且斜率为的直线交抛物线于点M(M在第一象限),MN ⊥l,垂足为N,直线NF交y轴于点D,则|MD|=.16.在四面体ABCD中,CA=CB,DA=DB,AB=6,CD=8,AB⊂平面α,l⊥平面α,E,F分别为线段AD,BC的中点,当四面体以AB为轴旋转时,直线EF与直线l夹角的余弦值的取值范围是.三、解答题:本大题共5小题,共70分,解答应写出文字说明,证明过程或演算步骤.第17题第21题为必考题,考生都必须作答,第22、23题为选考题,考生根据要求作答.17.(12分)已知S n是公差不为零的等差数列{a n}的前n项和,S3=6,a3是a1与a9的等比中项.(1)求数列{a n}的通项公式;(2)设数列,数列{b n}的前2n项和为P2n,若,求正整数n的最小值.18.(12分)19.(12分)已知椭圆与抛物线D:y2=﹣4x有共同的焦点F,且两曲线的公共点到F的距离是它到直线x=﹣4(点F在此直线右侧)的距离的一半.(1)求椭圆C的方程;(2)设O为坐标原点,直线l过点F且与椭圆交于A,B两点,以OA,OB为邻边作平行四边形OAMB.是否存在直线l,使点M落在椭圆C或抛物线D上?若存在,求出点M坐标;若不存在,请说明理由.20.(12分)为丰富学生课外生活,某市组织了高中生钢笔书法比赛,比赛分两个阶段进行:第一阶段由评委给出所有参赛作品评分,并确定优胜者;第二阶段为附加赛,参赛人员由组委会按规则另行确定.数据统计员对第一阶段的分数进行了统计分析,这些分数X都在[70,100)内,在以组距为5画分数的频率分布直方图(设“”)时,发现Y满足,n∈N*,5n≤X<5(n+1).(1)试确定n的所有取值,并求k;(2)组委会确定:在第一阶段比赛中低于85分的参赛者无缘获奖也不能参加附加赛;分数在[95,100)的参赛者评为一等奖;分数在[90,95)的同学评为二等奖,但通过附加赛有的概率提升为一等奖;分数在[85,90)的同学评为三等奖,但通过附加赛有的概率提升为二等奖(所有参加附加赛的获奖人员均不降低获奖等级).已知学生A和B均参加了本次比赛,且学生A在第一阶段评为二等奖.(i)求学生B最终获奖等级不低于学生A的最终获奖等级的概率;(ii)已知学生A和B都获奖,记A,B两位同学最终获得一等奖的人数为ξ,求ξ的分布列和数学期望.21.已知函数2()23()x x f x e ax a e a R −=−+∈,其中 2.71828...e =为自然对数的底数. (1)讨论()f x 的单调性;(2)当(0,)x ∈+∞时,222e ()3e 10()x x x a a x af x −−+−−+>恒成立,求a 的取值范围.(二)选考题:10分.请考生在第22、23题中任选一题作答.如果多做,则按所做第一题计分.[选修4-4:坐标系与参数方程]22.(10分)在平面直角坐标系xOy 中,曲线C 的方程为x 2﹣2x +y 2=0.以原点O 为极点,x 轴的正半轴为极轴建立极坐标系,直线l 的极坐标方程为.(1)写出曲线C 的极坐标方程,并求出直线l 与曲线C 的交点M ,N 的极坐标; (2)设P 是椭圆上的动点,求△PMN 面积的最大值.[选修4-5:不等式选讲] 23.已知f (x )=x 2+2|x ﹣1|. (1)解关于x 的不等式:;(2)若f (x )的最小值为M ,且a +b +c =M (a ,b ,c ∈R +),求证:.大庆实验中学2020届高三综合训练(一)数学试卷参考答案与试题解析一、选择题:本大题共12小题,每小题5分,共60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.解:N ={x |x 2﹣1>0}={x |x >1或x <﹣1},M ={x |﹣1<x <3}, ∴M ∩N ={x |1<x <3}. 故选:C .2.解:由z •(1+2i )=|3﹣4i |=5, 得,∴在复平面内复数z 对应的点的坐标为(1,﹣2),位于第四象限, 故选:D .3.解析:0.30.3>0.30.4,即b >c >0,而,即a >b ,∴a >b >c , 故选:B . 4.C由于极差反映了最大值与最小值差的关系,方差反映数据的波动幅度大小关系,平均数反映所有数据的平均值的关系,中位数反映中间一位或两位平均值的大小关系,因此由图可知,不通过计算不能比较平均数大小关系. 故选C . 5.【答案】B对于①,若 “p 或q ”为假命题,则p ,q 均为假命题,故①正确;对于②,命题“若x ≥2且y ≥3,则x +y ≥5”的否命题为“若x <2或y <3,则x +y <5”,故②错;对于③,因为2a <−时24a >,所以若a ,b 是实数,则“a >2”是“a 2>4”的充分不必要条件,故③错; 对于④,命题“若x y =,则sin sin x y =”为真命题,则其的逆否命题为真命题,故④正确. 故选:B .6.【分析】由已知利用正弦定理,两角差的正弦函数公式,二倍角的正弦函数公式可得sin (B ﹣C )=sin2C ,在锐角三角形中可求B =3C ,可得,且,从而解得C 的取值范围.【解答】解:∵b cos C ﹣c cos B =2c •cos C ,∴由正弦定理可得:sin B cos C ﹣sin C cos B =2sin C cos C , ∴sin (B ﹣C )=sin2C , ∴B ﹣C =2C , ∴B =3C ,∴,且,∴.故选:A.7.解:∵平面向量,,均为单位向量,(+)2=+2•+=3,故||=;∴=•+﹣(+)•=﹣()≤+|+|•|﹣|=+;当且仅当与反向时取等号.故选:C.8.解:连接A、B、O,得等边三角形OAB,则阴影部分的面积为S阴影=12×(×πR2﹣×R2×sin60°)=(2π﹣3)R2,故所求概率为.故选:B.9.解析:依题意作出f(x)的图象,y=f(x+a)的图象可以看成是y=f(x)的图象向左(a>0时)或向右(a <0时)平移|a|个单位而得,当a>0时,y=f(x)的图象至少向左平移6个单位(不含6个单位)才能满足f(x+a)>f(x)成立,当a<0时,y=f(x)的图象向右平移至多2个单位(不含2个单位)才能满足f(x+a)>f(x)成立(对任意的x∈[﹣1,2]),故x∈(﹣2,0)∪(6,+∞),故选:D.10.解:不妨设P在第二象项,|FM|=m,H(0,h)(h>0),由知N(0,﹣2h),由△AFM~△AON,得(1),由△BOH~△BFM,得(2)(1),(2)两式相乘得,即c=3a,离心率为3.故选:B.11.解析:∵x∈[0,π],∴,令,则由题意,在上只能有两解和∴,(*)因为在上必有,故在(0,π)上存在x1,x2满足f(x1)﹣f(x2)=2;①成立;对应的x(显然在[0,π]上)一定是最大值点,因对应的x值有可能在[0,π]上,故②结论错误;解(*)得,所以④成立;当时,,由于,故,此时y=sin z是增函数,从而f(x)在上单调递增.综上,①③④成立,故选:B.12.解:求导得有两个零点等价于函数φ(x)=e x﹣(2x+1)t有一个不等于1的零点,分离参数得,令,,h(x)在递减,在递增,显然在取得最小值,作h(x)的图象,并作y=t的图象,注意到h(0)=1,,(原定义域x>0,这里为方便讨论,考虑h(0)),当t≥1时,直线y=t与只有一个交点即φ(x)只有一个零点(该零点值大于1);当时在两侧附近同号,不是极值点;当时函数φ(x)=e x﹣(2x+1)t有两个不同零点(其中一个零点等于1),但此时在x=1两侧附近同号,使得x=1不是极值点不合.故选:D.二、填空题:本大题共4小题,每小题5分,共20分.13.解:展开式通项,依题意,,得r=3,所以:x﹣2的系数是.故答案为:﹣80.14.解:根据题意,将5个医疗队分派到4个重灾区,每个重灾区至少分配一个医疗队,则其中有一个重灾区安排两个医疗队,剩下3个重灾区各安排一个医疗队,分2步进行分析:先选出一个重灾区分配有两个医疗队,有C41种分配法,再为剩下的3个重灾区各分配一个医疗队,有种分配法,所以不同的分配方案数共有.故答案为:240.15.解:设准线l与x轴交于E.易知F(1,0),EF=2,由抛物线定义知|MN|=|MF|,由于∠NMF=60°,所以△NMF为等边三角形,∠NFE=60°,所以三角形边长为|NM|==2|FE|=4,又OD是△FEN的中位线,MD就是该等边三角形的高,,故答案为:2.16.解:∵在四面体ABCD中,CA=CB,DA=DB,AB=6,CD=8,AB⊂平面α,l⊥平面α,E,F分别为线段AD,BC的中点,∴AB⊥CD,又GE∥CD,GF∥AB,∴GE⊥GF,得EF=5.当四面体绕AB旋转时,由GF∥AB,即EF绕GF旋转,故EF与直线l所成角的范围为[90°﹣∠GFE,90°],∴直线EF与直线l夹角的余弦值的取值范围是.故答案为:[0,].三、解答题:本大题共5小题,共70分,解答应写出文字说明,证明过程或演算步骤.第17题第21题为必考题,考生都必须作答,第22、23题为选考题,考生根据要求作答.(一)必做题:60分.17.【分析】(1)设出等差数列的公差为d,且不为0,运用等比数列的中项性质和等差数列的通项公式和求和公式,解方程可得首项和公差,即可得到所求通项公式;(2)求得,再由数列的裂项相消求和,计算可得P2n,解不等式可得所求最小值.【解答】解:(1)公差d不为零的等差数列{a n},由a3是a1与a9的等比中项,可得,即a1(a1+8d)=(a1+2d)2,化为a1=d,又S 3=3a 1+3d =6,可得a 1=d =1,所以数列{a n }是以1为首项和公差的等差数列, 故综上;(2)由(1)可知, 所以=,所以,故n 的最小值为505. (2)法二:所以当n 为奇数时+11111+=21212123n n b b n n n n −++−+++-112123n n =+−+- ()()()21234212+++11111155743411=141n n nP b bb b b b n n n −=+++=−+−++−+−+−++ 所以,故n 的最小值为505. 18.19.解:(1)由题意知F(﹣1,0),因而c=1,即a2=b2+1,又两曲线在第二象限内的交点Q(x Q,y Q)到F的距离是它到直线x=﹣4的距离的一半,即4+x Q=2(﹣x Q+1),得,则,代入到椭圆方程,得.由,解得a2=4,b2=3,∴所求椭圆的方程为.(2)当直线AB的斜率存在且不为0时,设直线AB的方程为y=k(x+1),由,得(3+4k2)x2+8k2x+4k2﹣12=0,设M(x0,y0),A(x1,y1),B(x2,y2),则2122834kx xk−+=+,,由于OABM为平行四边形,得,故,若点M在椭圆C上,则,代入得,解得k无解;若点M在抛物线D上,则,代入得,解得k无解.当直线斜率不存在时,易知存在点M(﹣2,0)在椭圆C上.故不存在直线l,使点M落在抛物线D上,存在直线l,使点M(﹣2,0)落在椭圆C上.20.解:(1)根据题意,X在[70,100)内,按组距为5可分成6个小区间,分别是[70,75),[75,80),[80,85),[85,90),[90,95),[95,100),∵70≤X<100,由5n≤X<5(n+1),n∈N*,∴n=14,15,16,17,18,19,每个小区间对应的频率值分别是P=5Y=.,解得k=,∴n的对值是14,15,16,17,18,19,k=.(2)(i)由于参赛学生很多,可以把频率视为概率,由(1)知,学生B的分数属于区间[70,75),[75,80),[80,85),[85,90),[90,95),[95,100)的概率分别是:,我们用符号A ij(或B ij)表示学生A(或B)在第一轮获奖等级为i,通过附加赛最终获奖等级为j,其中j≤i(i,j=1,2,3),记W=“学生B最终获奖等级不低于学生A的最终获奖等级”,则P(W)=P(B1+B21+B22A22+B32A22)=P(B1)+P(B21)+P(B22)P(A22)+P(B32)P(A22)=+=.(ii)学生A最终获得一等奖的概率是P(A21)=,学生B最终获得一等奖的概率是P()=,P (ξ=0)=(1﹣)(1﹣)=, P (ξ=1)=, P (ξ=2)=, ∴ξ的分布列为:E ξ==.21. (1)求出函数的导数,通过讨论a 的范围,求出函数的单调区间即可;(2)令()()221210x g x e x a x ax a =−−−+−+只需在()0,x ∈+∞使()min 0g x >即可,通过讨论a 的范围,求出函数的单调区间,求出函数的最值,从而确定a 的范围即可.解:(1)由题意可知,()22223'23x x x x x e ae a f x e a a e e −−−=−−= ()()3x x x e a e a e−+=, 当0a =时,()'0xf x e =>,此时()f x 在R 上单调递增; 当0a >时,令()'0f x =,解得()ln 3x a =,当()(),ln 3x a ∈−∞时,()'0f x <,()f x 单调递减;当()()ln 3,x a ∈+∞时,()'0f x >,()f x 单调递增;当0a <时,令()'0f x =,解得()ln x a =−,当()(),ln x a ∈−∞−时,()'0f x <,()f x 单调递减;当()()ln ,x a ∈−+∞时,()'0f x >,()f x 单调递增;综上,当0a =时,()f x 在R 上单调递增;当0a >时,()(),ln 3x a ∈−∞时,()f x 单调递减, ()()ln 3,x a ∈+∞时单调递增;当0a <时,()(),ln x a ∈−∞−时,()f x 单调递减, ()()ln ,x a ∈−+∞时单调递增.(2)由()()222310x x ex a a e x a f x −−+−−+>, 可得,()2212100x e x a x ax a −−−+−+>,令()()221210x g x e x a x ax a =−−−+−+,只需在()0,x ∈+∞使()min 0g x >即可,()()()()'1222x x x g x e x a e x a e x a =−−+−+=−−,①当0a ≤时,0x a −>,当0ln2x <<时,()'0g x <,当ln2x >时,()'0g x >,所以()g x 在()0,ln2上是减函数,在()ln2,+∞上是增函数,只需()()22ln22ln22ln 22ln280g a a =−+−−++>, 解得ln24ln22a −<<+,所以ln240a −<≤;②当0ln2a <<时,()g x 在()0,a 上是增函数,在(),ln2a 上是减函数,在()ln2,+∞上是增函数,则()()2000g ln g ⎧>⎪⎨≥⎪⎩,解得0ln2a <<, ③当ln2a =时,()'0g x ≥,()g x 在()0,+∞上是增函数,而()209ln2ln 20g =−−>成立, ④当ln2a >时,()g x 在()0,ln2上是增函数,在()ln2,a 上是减函数,在(),a +∞上是增函数,则()()2100090a g a e g a a ⎧=−>⎪⎨=−−≥⎪⎩,解得ln2ln10a <<. 综上,a 的取值范围为()ln24,ln10−.(二)选考题:10分.请考生在第22、23题中任选一题作答.如果多做,则按所做第一题计分.[选修4-4:坐标系与参数方程]22.解:(1)曲线C 的方程为x 2﹣2x +y 2=0.转换为极坐标方程为:ρ=2cos θ.联立,得M (0,0),.(2)易知|MN |=1,直线.设点P (2cos α,sin α),则点P 到直线l 的距离.∴(其中). ∴△PMN 面积的最大值为.[选修4-5:不等式选讲]23.解:(1)当x<0时,等价于x2+2|x﹣1|>﹣2,该不等式恒成立,……(1分)当0<x≤1时,f(x)>等价于x2﹣2x>0,该不等式解集为ϕ,……(2分)当x>1时,等价于x2+2x﹣2>2,解得,………(3分)综上,x<0或,所以不等式的解集为.…………………(5分)证明:(2),易得f(x)的最小值为1,即a+b+c=M=1……………………………(7分)因为a,b,c∈R+,所以,,,所以≥2a+2b+2c=2,……………………(9分)当且仅当时等号成立.…………………………………………(10分)。

2020届河北省石家庄市高三毕业班综合训练(二)化学试题(解析版)

2020届河北省石家庄市高三毕业班综合训练(二)化学试题(解析版)

石家庄市2020届高中毕业班综合训练(二)化学试卷注意事项:1.答卷前,考生务必将自己的姓名、准考证号填写在答题卡上。

2.回答选择题时,选出每小题答案后,用铅笔把答题卡上对应题目的答案标号涂黑。

如需改动,用橡皮擦干净后,再选涂其它答案标号。

回答非选择题时,把答案写在答题卡上。

写在本试卷上无效。

3.考试结束后,将本试卷和答题卡一并交回。

可能用到的相对原子质量:H 1 C 12 N 14 O16 P 31 S 32 Fe 56 Zn 65 Ag 108一、选择题:本题共13小题,每小题6分,共78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.下列说法错误的是A. 越王勾践剑(青铜)的铸造材料主要是铜锡合金B. 青花瓷制作原料的主要成分是硅酸盐C. 以毛竹为原料制作的竹纤维属于高分子材料D. 石墨烯是一种能导电的有机高分子材料【答案】D【解析】【详解】A.越王勾践剑是春秋晚期越国青铜器,铸造材料主要是铜锡合金,故A正确;B.青花瓷的制造原料为黏土,属于硅酸盐,故B正确;C.高分子化合物相对分子质量很大,一般在10000以上,可高达几百万,以毛竹为原料制作的竹纤维,主要成分为纤维素,是高聚物,属于有机合成高分子材料,故C正确;D.“石墨烯”是一种碳的单质,为无机物,不是新型有机高分子材料,故D错误;故选:D。

2.对二乙烯苯()可用作树脂、油漆及特种橡胶的原料下列说法正确的是A. 分子中所有原子可共平面B. 一氯代物有4种(不考虑立体异构)C. 不能使酸性高锰酸钾溶液褪色D. 1mol该分子最多可与2mol H2加成【答案】A【解析】【详解】A.乙烯、苯分子中所有原子共平面,对二乙烯苯可看成苯环上的两个H原子被两个乙烯基代替,碳碳单键可以旋转,所以该分子中所有原子可能共平面,故A正确;B.该分子结构对称,苯环上的一氯代物有1种,取代基上的一氯代物有2种,共有3种一氯代物,故B 错误;C.含有碳碳双键,可以被酸性高锰酸钾氧化,从而使酸性高锰酸钾溶液褪色,故C错误;D.苯环和碳碳双键都可以与氢气加成,所以1mol该分子最多可与5molH2加成,故D错误;故答案为A。

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