模拟试题七
中考物理模拟试题(七)word版(带答案)
中考物理模拟试题（七）一．选择题（本题包括10小题，每小题3分，共30分。
每小题只有一个选项符合题意）1.物理学是一门实验性很强的基础学科，正确使用仪器是做好物理实验的基础。
下列关于实验器材的使用或读数的说法正确的是( )A.图甲中，体温计不能离开人体读数B.图乙中，所测物体长度为3.80cmC.图丙中，停表的读数为187.5sD.图丁中，测液体温度时温度计的玻璃泡应浸没在液体中且不接触烧杯底及侧壁2.在奥运会射箭运动比赛中，以下关于力的作用效果的描述，其中一个与另外三个不同的是( )A.运动员松手后，弓的弹力把箭射出B.运动员在瞄准时，手的拉力把弓拉弯C.箭中靶时，是靶的阻力让箭停止运动D.箭在飞行过程中中，重力的作用让箭划出了一道弧线3.科学家研究发现：当双层平行石墨烯堆积约1.1°从细微的角度来看，会产生超导体效果。
此现象中的石墨烯应用是A.绝缘体材料，可以用来做导线的绝缘层。
B.半导体材料，可以用来制作电水壶中的加热电阻。
C.此材料是超导体材料，可以用来制作导线。
D.石墨烯是一种新型的金属材料，可以用来制作飞机的外壳。
4.疫情期间小李同学在小区做志愿者，他用一支甩好的水银体温计连续依次测量甲、乙、丙三人的体温，中途没有甩过体温计，最后结果都是38.5℃，那么下列说法正确且全面的是( )A.甲的体温一定是38.5℃B.乙的体温一定是38.5℃C.丙的体温一定是38.5℃D.三人的体温都一定是38.5℃5.如图是一款磁悬浮蓝牙音箱，它由球形音箱和底座组成，二者均为磁体，音箱悬浮在空中，一边旋转一边播放歌曲。
下列说法正确的是( )A.蓝牙音箱是高科技产品，因此发声不需要振动B.调节音箱音量，是利用了滑动变阻器的原理，可以改变声音的响度。
C.根据蓝牙音箱发声音调我们就可以可以分辨出哪位歌手的歌声D.磁悬浮音箱此时处于静止状态，已经脱离了地球的引力，所以悬浮在空中。
6.一只木箱放在水平地面上，地面上各处粗糙程度相同。
英语专升本模拟试题 7范文
模拟试题（七）Part I Vocabulary and Structure ( 30 % )Directions: Each of the following sentences is incomplete and followed by four choices markedA), B), C) and D), choose the ONE that best completes the sentence.1. Please pass me .A. some pieces of meatB. some mealsC. some piece of mealD. some pieces of meats2. It is reported that troops have the town.A. surroundingB. surroundC. surroundedD. surroundings3. He is engaged in the of a new club.A. organizable B .organize C. organized D. organization4. Here are the names of some people who might be to you.A. usefulB. usefullyC. useD. usefulness5. Do you regret the you have made?A. choose B . choice C .choicely D. chooser6.Jim passed the Chinese exam. What about Jack ? .A. He did soB. So did heC. So he didD. So does he7. Would you like something to drink? What about a glass of milk? I think I'd betterlike a bottle of beer.A. No, thanksB. OKC. I'd love toD. Yes, just a little, please.8. Fish is than pork.A. more delicious B .much delicious C .better delicious D .the most delicious9. The ten years from 1966 to 1976 are a disastrous period in China's history.A. named after B known as C. picked out ax D. singled out as10. On special we usually go to an expensive restaurant.A. occasionsB. timesC. vacationsD. chances11. It was because the applicant was too conceited he failed in the interview.A. thatB. so thatC. soD. therefore12. I am afraid I won't have any influence over my 18 years daughter her mind is made up.A. the momentB. as soon asC. onceD. since13. The team really looks good tonight because the coach had them every night this week.A. practiceB. to practiceC. practicedD. practicing14. Excuse me, but it is time to have your temperature .A. takingB. to takeC. takeD. taken15. Jane's dress is similar in design her sister's.A. withB. likeC. toD. as16. it is you've found, you must give it back to the person it belongs to.A. ThatB. WhatC. WhateverD. However17. Consumers should do than simply complain about the poor quality of goods.A. much lessB. some moreC. far lessD. far more18. Beth California in 1981 and in Texas ever since.A. left ... workedB. has left ... has workedC. left has workedD. has left worked19. Frank had worked for two years to be a carpenter, but found his progress .A. discouraging and unsatisfiedB. discouraging and dissatisfiedC. discouraged and dissatisfiedD. unsatisfactory and discouraging20. James Joyce's novels are difficult to understand and impossible into another language.A .to translate B. for translation C. to translate it D. being translated21. Sports help to build character and competitiveness.A. cultivateB. accomplishC. assistD. restore22. The breakdowns of the computer has caused serious delays in our work.A. continuousB. continuedC. continuingD. continual23. At such a time of crisis, we must try to all differences of party or class and stick together.A. set forthB. set backC. set downD. set aside24. I have told her on occasions that George is not a man to be trusted.A. ridiculousB. numerousC. sentimentalD. alternative25. The renewal of the debate was anticipated but its was not.A. intensityB. tensionC. degreeD. sensitivity26. While the doctors analyzed the patient's condition, his family waited outside in considerable .A. tensionB. anticipationC. eagernessD. anxiety27. Big industries and environmental protection groups naturally have interests.A. conflictingB. distinguishingC. alternateD. combating28. It wasn't the dinner. It was people talked about at the dinner that disgusted him.A. whatB. thatC. whateverD. those29. _ _ a little earlier this morning! I missed the school bus by only a minute and had to wait in the cold for nearly an hour!A. If I had got upB. If only I get upC. If only I had got upD. If I got up30. Susan wants to know whether the measures have been agreed .A. toB. withC. overD. uponPart II Cloze ( 20 % )Directions: There are 20 blanks in the following passage. For each blank there are four choices marked A), B), C) and D). You should choose the one that best fits into the passage.People who know one another very well indeed may sit or walk together for long periods without feeling 31 necessary to speak. But otherwise silence between people is rather awkward. If for instance we invite people to an evening meal and there are long silences in the conversation, we 32 our best to get the talk going.Because words can break silence, 33 tension, we often use them for this reason and not mainly 34 . When two people are introduced, one says, "How do you do? This is not really a question, 35 its apparent meaning. Its purpose is not to communicate meaning but to break the tension which would 36 silence, and to express 37 the handshake, a vague good will towards the new acquaintance. Introductions are generally followed by some 38 conversation. In Britain this is usually about the weather, a preoccupation which people from other countries often find _ 39__ . Many people become unnecessarily anxious 40 because they do not 41 this 42 of language. Conversation is not a discussion in the sense 43 _ one has to 44 a definite conclusion. A topic may be 45 and dropped in favor of another. The only rules are that it should be interesting to the people 46 and that they should all be able to 47 something to it.A slight feeling of 48 towards meeting people, particular strangers, when we are invitedout for the evening or to a party, is very 49 indeed. Introductions are a means 50 we can help one another to become more at ease.31. A. that B. / C. it D. them32. A . do B. make C. take D. push33. A. thus remove B. and thus removingC. and thus removingD. thus to remove34. A. for that it means B. for what it meansC. for that the)' meanD. for what they mean35. A. instead of B. despite C. regardless of D. as for36. A. arise from B. attribute to C. result in D. bring about37. A. despite B. in addition C. as long as D. along with38. A. personal B. general C. specific D. detailed39. A. amusing B. amused C. amuse D. to amuse40. A. on social occasions B. at social occasionsC. on social situationsD. at social situations41. A. distinguish B. appreciate C. admit D. recognize42. A. importance B. appearance C. function D. meaning43. A. in which B. that C. / D. which44. A. draw at B. draw in C. arrive at D. arrive in45. A. picked out B. picked up C. put forward D. drawn out46. A. concerning B. concerned about C. concerned D. to be concerned47. A. attribute B. distribute C. substitute D. contribute48. A. compliment B. appreciation C. comprehension D. apprehension49. A. causal B. random C. common D. particular50. A. in which B. through which C. to which D. by whichPart III Reading Comprehension ( 30 %)Directions: There are three passages in this part. 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.Passage One:Extinction has recently become a catchword. Every day entire species of plants and animals die out, and for the first time in history this is due to the actions of just one species: humans. We already know about five mass extinctions, and now a sixth seems to be under way. This one is different, because it is man-made. Deforestation of the rain forests is just one aspect of the phenomenon. Most people may have heard about that, but few people know that most of the species existing in the rain forests have never been described by science. Often they die out before we ever know they existed. Nobody can tell what treasures we lose, perhaps a cure for cancer or other modem-day diseases.World-famous Harvard professor Edward O. Wilson examines life on our planet in his book The Diversity of Life. He doesn't lecture his readers, but states in a matter-of-fact way what is known about the Earth's past and the impact of mankind on its plant and animal life. Meanwhile, he suggests solutions for the present crisis.If you are interested in the future of planet Earth and want to learn to see the bigger picture, this is the book for you. This is no light bedtime reading and will probably leave you feelinguneasy. However, it's important for people living in the 21st century to think about how we can pass at least I’m of this diversity on to our children. Recent-research shows that Earth needs about 10 million years to restore the lost diversity of species after a great crisis. Ten million years are not much in terms 0fthe life of a planet, but the period is way too long for mankind. Wilson's book should help us to start a process of reconsideration.51. Judging from the context, what does the word "extinction" (Line 1, Para 1) mean?A. Death of many plants and animals.B. Killing of wild animals by man.C. Deforestation of the rain forest.D. Dying out of an entire species.52. In what sense is the present mass extinction different from the five previous ones?A. It is larger in scale.B. It is caused by man.C. The lost diversity can never be restored.D. It threatens the very existence of humans.53. Why should people be concerned about extinction?A. Because many existing species have not yet been studied.B. Because the dying species may be of great value to humans.C. Because it may lead to great climate changes on earth.D. Because the dying species can cure cancer and other diseases.54. It can be inferred from the passage that .A. there are now more species on our planet than beforeB. every plant or animal is described in the book The Diversity of LifeC. without man's interference every species would have survivedD. many species lived and died without ever being noticed by man55. What is the chief purpose of Edward O. Wilson in writing the book The Diversity of Life?A. To provide readers with some interesting bedtime reading.B. To help specialists do research on plant and animal life.C. To arouse readers' interest in the history of our planet.D. To remind us of the urgency of preserving the diversity of life.Passage Two:How do we get more young people to increase their consumption of iron-rich foods? Many nutritionists are advocating the fortification of a number of foods. This may help, but I contend that we should also intensify our efforts in nutrition education among our young people. I simply do not agree that it is futile, to try to change eating habits. Once an intelligent person--- and this includes adolescents understand the need for a healthy diet, I think he or she will act accordingly. As for specific actions, I suggest that blood hemoglobin should be checked as a routine part of a youngster's yearly physical exam. It should contain at least 12 grams for a boy. If it is any lower, the physician probably will prescribe an easily absorbed iron supplement.Adolescents and everyone else should cut out highly processed foods and drinks, which may be low in iron and other nutrients. Read the labels for iron content. Especially make sure that all bakery products are made with enriched flour or whole grains. Try adding liver, chicken, beef, veal or any other variety to the weekly menu.Finally, even when you are trying to lose weight, always eat a sensible, well-balanced diet madeup of a variety of fresh or very lightly processed foods. This way, you stand a good chance of getting not only enough iron, but a/so adequate amounts of all the other essential nutrients.56. The author recommends that young people .A. check blood hemoglobin yearlyB. be on a strictly vegetarian dietC. lose weightD. do some more studies on hemoglobin57. What kind of bakery products do young people have to eat?A. Bread made with good vegetable oil.B. Bread made with wheat.C. Bread made with enriched flour or whole grains.D. Bread containing less calories.58. The passage is mainly about .A. the importance of diet.B. the need of ironC. adolescents eating habitsD. blood hemoglobin59. When the author says that we should intensify our efforts in nutrition education among our young people, he means that we .A. should force young people to ear well-balanced mealsB. should tell young people to eat liver, chicken, beef or vealC. should teach adolescents about nutrition in home economics classD. should try to change eating habits to get enough iron and other essential nutrients60. The author says that the appropriate way to lose weight is .A. to cut our highly processed foods and drinksB. to eat a variety of fresh or very Lightly processed foodsC. to eat vegetables and eggsD. to eat foods recommended by a physicianPassage Three:I ask you to drink to his health as a young man full of the spirit of adventure who has lit up the world with a flash of courage." With these words, the British Minister of Air turned and raised his glass to the young man who sat beside him -- a young man who, only a month before, was completely unknown. Yet on that summer day in 1927 his name was on the world's lips--Charles Lindbergh, the first man to fly the Atlantic alone.He had been an air mail pilot, flying back and forth between Chicago and the win the $ 25,000 prize offered by a fellow city of St. Louis. Determined to American for the first flight from New York to Paris, Lindbergh had persuaded a group of St. Louis businessmen to finance the building of a special plane for him.The news that Lindbergh intended to fly the Atlantic alone was received with disbelief. The plane would never fly, people said. It would run out of fuel. It had only a single engine. Lloyds of London refused to insure the flight. Men called Lindbergh the "flying fool".But on May 20th, 1927, just after ten to eight in the morning, Lindbergh s "Spirit of St. Louis", heavily laden with fuel. struggled into the air from a New York airfield. For several hours the weight of the petrol prevented the young pilot from flying more than a few feet above thewave-tops. Night came and thick fog covered up the stars. Lindbergh flew steadily on, hoping that his course was the checking the fuel all the time to keep his the right one. He struggled to keep mind active. Throughout the next day the "Spirit of St. Louis flew on over seemingly limitless sea. Then a fishing boat appeared, and, an hour later, land. It was Ireland. Lindbergh set a compass course for Paris.By ten o'clock the lights of France's capital were shining beneath him. Tired, unshared, suddenly hungry, the "flying fool" came down to LcBourget airport, and landed in front of a huge crowd of wildly cheering people. After 34 hours of continuous piloting, the flight of 3,600 miles was over.61. The British Minister of Air .A. praised Lindbergh for his intelligenceB. encouraged Lindbergh to be more adventurousC. congratulated Lindbergh for his braveryD. warned Lindbergh not to fly alone62. "His name was on the world's lips" means .A. "everybody was drinking to his health"B. "everybody was jumping about because of him"C. "he became suddenly unpopular"D. "everybody was talking about him"63. A group of St. Louis businessmen had been persuaded to the building of a special plane.A. arrangeB. organizeC. stopD. pay for64. Which of the following is true?A. Nobody at all believed that it was foolish for anybody to try to fly the Atlantic.B. Everybody knew that Lindbergh was very brave and adventurous.C. People didn't believe that Lindbergh really meant to fly the Atlantic alone.D. Everybody believed that it was foolish for anybody to try to fly the Atlantic at all.65. The "Spirit of St. Louis" here refers to .A. the plane Lindbergh flew inB. the "flying fool"C. the hope of the people of St. LouisD. the city of St. LouisPart IV Mistake spotting ( 10 %)Directions: Each of the following sentences has four underlined parts and marked A,B,C and D. Identify the one that needs correction.66. He didn't tell me the reason that he didn't go to theA B C D67. He made a sandwich by putting a piece of cheese among two pieces of bread.A B C D68. In the opinion of the Captain Brown, the shortest way to the Philippines would be through theA B C DPanama Canal.69. In the middle of the night the strong wind began to blowA B C D70. There was being a crowd round the tree when they gotA B C D71. I told him that the children may get cold if they played in the snow.A B C D72. If he took a taxi, he would have caught theA B C D73. Tom failed his examination yesterday. He would studyA B C D74. They have been warned not get on a bus until all the passengers have got off.A B C D75. We cannot afford spending too much money on entertainment.A B C DPart V Translation ( 10%)Section ADirections: Translate the following sentences into English.76．当地居民对新的安全措施反应热烈。
《社会调查》模拟试题（7）
《社会调查》模拟试题（七）一、一、判断题（每题1分，共10分）1、不完全参与观察法，是以局外人身份从侧面对观察对象进行的观察（）2、结构式访谈降低了访谈的技术难度，使调查较易进行。
（）3、实地研究适用于解剖一两个有代表性的或独特性的社会单位。
（）4、社会调查的专门技术与工具处于社会调查研究方法体系的中间层次。
（）5、调查研究目的无法对社会调查研究活动过程实施自我调节。
（）6、有一部分研究课题来自于上级机关和领导交办的调查任务，此时，调查任务实际上就是所要研究的课题。
（）7、访谈法的特点之一是具有超时空性。
（）8、邮寄问卷的优点是简单易行，适合于大面积调查，缺点是质量难以保证，回收率低。
（）9、统计分组的要求是：组内异质，组间同质。
（）10、极限抽样误差肯定大于抽样平均误差。
（）二、二、单选题（每题1.5分，共15分）1、1、在社会调查中，（）是不可测量的。
A、变量；B、概念；C、标志；D、指标2、集体访谈最好使用（）。
A、完全结构式访谈B、结构式访谈C、半结构式访谈D、无结构式访谈3、“个人”是调查研究者常用的分析单位，调研者分析的是（）A、人类共有的特征B、某一类社会角色的特征C、某一群人的特征D、某些人共有的特征4、典型调查的局限性之一是（）。
A、资料缺乏深度B、侧重于定性研究C、选择的典型单位受调查者的主观意识影响较大D、收集的资料难以进行纵向比较5、对收集的原始数据资料进行审核，应采用（）。
A、逻辑审核；B、技术审核；C、来源判断；D、经验判断6、设计问卷的编码时，如果所提问题事先设计的答案有五个，可允许选择其中三个时，此时在编码中应给出（）。
A、一格B、二格C三格D、四格E、五格7、编制组距数列的决定性条件是（）A、离散变量B、总体单位数较多；C、变量值的变动范围不大D变量值的变动范围较大8、运用操作定义必须严格掌握对称性原则，即设计出来的操作定义要与有关抽象定义的内涵和外延相对称。
这是（）。
2024-2025学年上学期七年级语文开学测模拟试题
2024-2025学年上学期七年级语文开学测模拟试题(满分100分)一、基础与运用(本题包括1-10题，共30分)1．在纪念册扉页上书写下面的话。
注意布局合理，行款整齐，有一定的速度。
（3分）用才智描绘生命的美好画卷，用勤奋书写青春的崭新篇章。
2．下列加点字的读音和书写完全正确的一项是（）（3分）A．惊惶（huāng）瞻仰（zhān）耽搁（gē）声泪俱下（jù）B．收敛（liǎn）承载（zǎi）清翠（cuì）万不得已（yǐ）C．衣襟（jīng）铁锨（xiān）严峻（jùn）司空见贯（guàn）D．依偎（wēi）剥削（xuē）防御（yù）不可思议（yì）3．“宵”和“霄”容易混淆，通过查阅资料，小明知道了这两个字的不同意思。
他在下面的句子中依次填入（）（3分）经过科学家们日复一日通（）达旦的研究和试验，“神舟”飞天、“天问”探火……中国航天的脚步飞速前进。
4月16日，在太空“出差”的宇航员乘坐“快车”回家了。
透过电视镜头，看到他们平安出舱的画面，掌声、欢呼声顿时响彻云（），之前所有的担心、不安早就抛到九（）云外。
A．霄霄宵 B．霄宵宵C．宵宵霄 D．宵霄霄4．下列说法不正确的一项是（）（3分）A．以下地名或人名的拼音拼写，只有“宁波Ning Bo”拼写正确。
B．古人诗云：“芭蕉不展丁香结”、“丁香空结雨中愁”。
划线部分标点符号使用有误。
C．列夫·托尔斯泰是俄国的文学家、思想家，代表作有《战争与和平》《安娜·卡列尼娜》《复仇》等。
在《穷人》一文中，他用大量的心理描写塑造了桑娜的形象。
D．鲁迅先生爱憎分明，同敌人斗争从不屈服，为人民群众竭尽所能，“横眉冷对千夫指，俯首甘为孺子牛”正是他一生的写照。
5．下列词语中加点字解释错误的一项是（）（3分）（始祖，泛指创始人）A．行善积．德（积累）B．开山鼻祖．．C．日暮汉宫传蜡烛（传递蜡烛）D．终日不成章．（花纹）．．．6．下列句子中，表示年龄的加点词按从小到大的顺序排列，正确的是（）（3分）。
长沙理工大学《概率论与数理统计》模拟试题及答案七
长沙理工大学概率论与数理统计模拟试卷第七套姓名: 班级: 学号: 得分: 一．判断题（10分，每题2分）1. 在古典概型的随机试验中，当且仅当是不可能事件 ( ) 2．连续型随机变量的密度函数与其分布函数相互唯一确定 ( ) 3．若随机变量与独立，且都服从的 (0，1) 分布，则( )4．设为离散型随机变量, 且存在正数k 使得，则的数学期望未必存在( )5．在一个确定的假设检验中，当样本容量确定时, 犯第一类错误的概率与犯第二类错误的概率不能同时减少 ( ) 二．选择题（15分，每题3分）1. 设每次试验成功的概率为，重复进行试验直到第次才取得次成功的概率为 . (a)； (b)；(c) ； (d) . 2. 离散型随机变量的分布函数为，则 .(ａ) ； (ｂ) ；(ｃ) ； (ｄ) .3. 设随机变量服从指数分布，则随机变量的分布函数 .(ａ) 是连续函数； (ｂ) 恰好有一个间断点； (ｃ) 是阶梯函数； (ｄ) 至少有两个间断点.4. 设随机变量的方差相关系数则方差 . (ａ) 40； (ｂ) 34； (ｃ) 25.6； (ｄ) 17.65. 设为总体的一个样本，为样本均值，则下列结论中正确的是 .(ａ) ； (ｂ) ；(ｃ) ； (ｄ) . 二. 填空题（28分，每题4分）1. 一批电子元件共有100个, 次品率为0.05. 连续两次不放回地从中任取一个, 则第二次才取到正品的概率为0)(=A P A )(x f )(x F X Y 1.0=p Y X =X 0)(=>k X P X )(X E )10(<<p p n )1(n r r ≤≤r n r r n p p C ----)1(11rn rr n p p C --)1(1111)1(+-----r n r r n p pC r n r p p --)1(X )(x F ==)(k x X P )(1k k x X x P ≤≤-)()(11-+-k k x F x F )(11+-<<k k x X x P )()(1--k k x F x F X )2003,(max X Y =),(Y X ,1)(,4)(==Y D X D ,6.0=XY ρ=-)23(Y X D ),,,(21n X X X )2,1(2N X )(~/21n t n X -)1,(~)1(4112n F X ni i ∑=-)1,0(~/21N n X -)(~)1(41212n X ni i χ∑=-2. 设连续随机变量的密度函数为，则随机变量的概率密度函数为3. 设为总体中抽取的样本()的均值, 则＝ .4. 设二维随机变量的联合密度函数为则条件密度函数为,当 时 ,5. 设,则随机变量服从的分布为 ( 需写出自由度 )6. 设某种保险丝熔化时间（单位：秒），取的样本，得样本均值和方差分别为，则的置信度为95%的单侧 置信区间上限为7. 设的分布律为1 2 3已知一个样本值，则参数的极大似然估计值 为三. 计算题（40分，每题8分）1. 已知一批产品中96 %是合格品. 检查产品时，一合格品被误认为是次品的 概率是0.02；一次品被误认为是合格品的概率是0.05．求在被检查后认 为是合格品的产品确实是合格品的概率2．设随机变量与相互独立，，分别服从参数为的指数 分布，试求的密度函数. 3．某商店出售某种贵重商品. 根据经验，该商品每周销售量服从参数为 的泊松分布. 假定各周的销售量是相互独立的. 用中心极限定理计算该商店一年内（52周）售出该商品件数在50件到70件之间的概率.4. 总体，为总体的一个样本. 求常数 k , 使为σ 的无偏估计量.5．（1） 根据长期的经验，某工厂生产的特种金属丝的折断力（单位：kg ）. 已知kg ， 现从该厂生产的一大批特种金属丝中 随机抽取10个样品，测得样本均值kg . 问这批特种金属丝的 平均折断力可否认为是570 kg ？ （） （2） 已知维尼纶纤度在正常条件下服从正态分布. 某日抽取 5个样品，测得其纤度为: 1.31， 1.55， 1.34， 1.40， 1.45 .)(x f Xe Y 3==)(yf Y X )4,3(~N X 4321,,,XX X X )51(<<-X P ),(Y X ⎩⎨⎧<<<=他其,0;10,,1),(x x y y x f =)(x y f X Y )(~m t X 2X Y =),(~2σμN X 16=n 36.0,152==S X μX X P 2θ)1(2θθ-2)1(θ-)1,2,1(),,(321=x x x X Y X Y )(,μλμλ≠Y X Z 23+=)(z f Z 1=λ),(~2σμN X ),,,(21n X X X X ∑=-ni i XX k 1),(~2σμN X 8=σ2.575=x %5=α)048.0,(2μN问 这天的纤度的总体方差是否正常？试用作假设检验. 四. 证明题（7分）设随机变量相互独立且服从同一贝努利分布. 试证明随机变量与相互独立.附表： 标准正态分布数值表 分布数值表 t 分布数值表%10=αZ Y X ,,),1(p B Y X +Z 2χ6103.0)28.0(=Φ488.9)4(205.0=χ1315.2)15(025.0=t 975.0)96.1(=Φ711.0)4(295.0=χ7531.1)15(05.0=t 9772.0)0.2(=Φ071.11)5(205.0=χ1199.2)16(025.0=t 9938.0)5.2(=Φ145.1)5(295.0=χ7459.1)16(05.0=t长沙理工大学模拟试卷第七套概率论与数理统计试卷答案一. 判断题（10分，每题2分） 是 非 非 非 是 . 二. 选择题（15分，每题3分） （ａ）（ｄ）（ｂ）（ｃ）（ｄ）. 三. 填空题（28分，每题4分）1.1/22 ；2. ；3.0.9772 ；4. 当时； 5. 6. 上限为 15.263 . 7. 5 / 6 . 四. 计算题（40分，每题8分）1. 被查后认为是合格品的事件， 抽查的产品为合格品的事件. (2分)， (4分)(2分)2.(1分)时，，从而 ； (1分) 时，(2分)(2分)所以[] (2分) 3. 设为第i 周的销售量, (1分)则一年的销售量为 ，, . (2分)由独立同分布的中心极限定理，所求概率为(4分) . (1分)⎩⎨⎧≤>=000)])3/[ln()(1y y y f y f yY 10<<x ⎩⎨⎧<<-=他其0)2/(1)(xy x x x y f X Y ),1(m F A B 9428.005.004.098.096.0)()()()()(=⨯+⨯=+=B A P B P B A P B P A P .998.09428.0/9408.0)(/)()()(===A P B A P B P A B P ⎩⎨⎧>=-其他00)(x e x f xX λλ⎩⎨⎧>=-其他00)(y e y f yY μμ0≤z 0)(=z F Z 0)(=z f Z 0≤z ⎰∞+-∞-=dxx z f x f z f Y X Z ]2/)3[()()(21)(232/3/3/0]2/)[(21z z z x z x e e dx e μλμλλμλμλμ-------==⎰⎪⎩⎪⎨⎧≤>--=--0,00),(23)(2/3/z z e e z f z z Z μλλμλμ⎪⎩⎪⎨⎧≤>--=--0,00),(32)(3/2/z z e e z f z z Z μλλμλμiX 52,,2,1 =i i X)1(~P ∑==521i iX Y 52)(=Y E 52)(=Y D 1522521852185252522)7050(-⎪⎪⎭⎫⎝⎛Φ+⎪⎪⎭⎫ ⎝⎛Φ≈⎪⎪⎭⎫ ⎝⎛<-<-=<<Y P Y P 6041.016103.09938.01)28.0()50.2(=-+=-Φ+Φ=4. 注意到5. (1) 要检验的假设为(1分)检验用的统计量， 拒绝域为. (2分)，落在拒绝域内，故拒绝原假设，即不能认为平均折断力为570 kg .[, 落在拒绝域外，故接受原假设，即可以认为平均折断力为571 kg . ] (1分)(2) 要检验的假设为 (1分)[]检验用的统计量 ， 拒绝域为 或(2分)570:,570:10≠=μμH H )1,0(~/0N nX U σμ-=96.1)1(025.02==-≥z n z U α96.106.21065.010/85702.5750>==-=U 0H 96.1632.0102.010/92.5695710<==-=U 0H 221220048.0:,048.0:≠=σσH H 22122079.0:,79.0:≠=σσH H )1(~)(2202512--=∑=n X Xi iχσχ488.9)4()1(205.022==->χχχαn 711.0)4()1(295.02122==-<-χχχαn ()n i i X X n X X nX X ---+--=- )1(121)2(1)(,0)(2分σnn X X D X X E i i -=-=-)1(1,0~2分⎪⎭⎫⎝⎛--σn n N X X i dze n n z X X E nn z i 2212121|||)(|σσπ--∞+∞-⎰-=-dze nn znn z 221201212σσπ--∞+⎰-=)3(122分σπnn -=⎪⎭⎫ ⎝⎛-=⎪⎭⎫ ⎝⎛-∑∑==ni i n i i X X E k X X k E 11||||σπn n kn 122-=σ令=）分（2)1(2-=n n k π[], 落在拒绝域内，[,落在拒绝域内，]故拒绝原假设，即认为该天的纤度的总体方差不正常 . (1分)五、证明题 (7分) 由题设知0 1 0 1 2(2分) ；；；；；. 所以 与相互独立. (5分)41.1=x 49.1=x 488.9739.150023.0/0362.020>==χ711.0086.06241.0/0538.020<==χ0H X Y X +P p qP 2q pq 22p )0()0()0,0(3==+====+Z P Y X P q Z Y X P )1()0()1,0(2==+====+Z P Y X P pq Z Y X P )0()1(2)0,1(2==+====+Z P Y X P pq Z Y X P )1()1(2)1,1(2==+====+Z P Y X P pq Z Y X P )0()2()0,2(2==+====+Z P Y X P pq Z Y X P )1()2()1,2(3==+====+Z P Y X P p Z Y X P Y X +Z。
淮安市中考英语模拟试题7
江苏省淮安市中考模拟试卷（七）英语试题命题：辜从林本卷满分120分，考试时间120分钟第Ⅰ卷(选择题共55分)一、单项选择(共15小题；每小题1分，满分15分)( ) 1. — ______ are you going to Guangzhou?—I’m taking the plane.A. WhatB. WhyC. WhenD. How( ) 2. — Mary, is that umbrella ______?—No. It belongs to Jane.A. yourB. yoursC. herD. she( ) 3. — Can I help you, boy?—Yes. There is ______ wrong with my bike.A. somethingB. anythingC. everythingD. nothing( ) 4. —Why are you so happy, Henry?—My old friend David is coming to visit me. We haven’t seen each other ______ five years.A. sinceB. afterC. forD. in( ) 5. —What are you going to do this weekend?—I’m not sure ______. Maybe I am going swimming.A. alsoB. tooC. everD. yet( ) 6. —May I ______ the book from you?—Sorry. I have promised to ______ it to Tom.A. borrow; lendB. keep; lendC. lend; borrowD. keep; borrow( ) 7. — ______ you visit Beijing during your holiday?—No. I ______ to Hong Kong.A. Will; goB. Will; wentC. Did; wentD. Did; go( ) 8. Turn the computer off, Peter! You ______ play games so late any more.A. mustn’tB. needn’tC. have toD. might( ) 9. It began to rain ______ I was walking in the park.A. untilB. becauseC. whileD. although( ) 10. — What’s wrong with you, sir?— My flight ______ ten minutes ago. What should I do?A. took upB. took offC. got onD. got off( ) 11. — What nice coffee!—But I think it will taste ______ with sugar.A. wellB. badC. worseD. better( ) 12. Teachers will hardly use chalk in the future, ______?A. will heB. won’t heC. will theyD. won’t they( ) 13. — Everyone should help save the planet.—Yeah. I’ve stopped ______ plastic bags when shopping.A. to useB. usingC. useD. used( ) 14. — Can you sing this song in English?—Of course I can. It ______ often ______ by us kids.A. is; singingB. does; singC. has; sungD. is; sung( )15. —I hear Miss Wang will go boating with us this Sunday.— ______ We will have a good time.A. Good news!B. Thanks a lot.C. What a pity!D. Don’t mention it.二、完形填空(共15小题，每小题1分，满分15分)阅读下文，掌握其大意，然后从各题所给的四个选项中选出一个最佳答案。
计算机模拟试题7-答案
七[1]. 扫描仪是基于光电转换原理设计的，目前用来完成光电转换的主要器件是电荷耦合器件，它的英文缩写是______ 。
[2]. 使用双绞线作为通信传输介质，具有成本低、可靠性高、传输距离长等优点。
[3]. 在计算机中，8位带符号二进制整数可表示的十进制最大值是_____________ 。
** B.255 C.127 D.256[4]. 在一台PC机中，最重要的物理部件是________。
A.显示器B.打印机C.键盘D.主机[5]. 下列关于计算机机器语言的叙述中，错误的是________。
A.机器语言就是计算机的指令系统B.用机器语言编写的程序可以在各种不同类型的计算机上直接执行C.用机器语言编制的程序难以维护和修改D.用机器语言编制的程序难以理解和记忆[6]. 计算机病毒具有破坏作用，它能直接破坏的对象通常不包括________。
A.程序B. 数据C.操作系统D.计算机电源[7]. 喷墨打印机中最关键的技术和部件是________。
A.喷头B.压电陶瓷C.墨水D.纸张[8]. PC机的主板用于存放BIOS程序的大都是________。
A.芯片组B.闪存（Flash ROM）C.超级I／O芯片D双倍数据速率(DDR)SDRAM[9]. 机械零件图利用扫描仪直接输入计算机，形成的是矢量图形。
[10]. 下面关于虚拟存储器的说法中，正确的是________。
A.虚拟存储器是提高计算机运算速度的设备B.虚拟存储器由RAM加上高速缓存Cache组成C.虚拟存储器的容量等于主存加上Cache的容量D．虚拟存储器由物理内存和硬盘上的虚拟存储组成[11]. 硬盘存储器的平均存取时间与盘片的旋转速度有关，在其他参数相同的情况下，下面_______转速的硬盘存取速度最快。
**转/分 B.7200转/分 C.4500转/分 D.3000转/分[12]. 局域网是指较小地域范围内的计算机网络。
下列关于计算机局域网的描述错误的是________。
江苏省无锡市江阴市重点中学2022-2023学年高三下学期4月模拟检测语文试题(七)(含答案)
江阴市重点中学2022-2023学年高三下学期4月模拟检测七语文试题一、现代文阅读(35分)（一）现代文阅读I(本题共5小题，17分)阅读下文，完成下面小题。
材料一：①假如你是一位木商，我是一位植物学家，另外一位朋友是画家，三人同时来看一棵古松，我们三人可以同时都“知觉”到这一棵树，可是三人所“知觉”到的却是三种不同的东西。
你脱离不了你的木商的心习，你所知觉到的只是一棵做某事用值几多钱的木料。
我也脱离不了我的植物学家的心习，我所知觉到的只是一棵叶为针状、果为球状、四季常青的显花植物。
我们的朋友——画家，什么事都不管，只管审美，他所知觉到的只是一棵苍翠、劲拔的古树。
我们三人的反应态度也不一致。
你心里盘算它是宜于架屋或是制器，我把它归到某类某科里去，注意它和其他松树的异点，我们的朋友只在聚精会神地观赏它的苍翠颜色，感受它的那股昂然高举、不受屈挠的气概。
②从此可知道这棵古松并不是一件固定的东西，它的形象随观者的性格和情趣而变化，各人所见到的古松的形象都是各人自己性格和情趣的返照。
古松的形象一半是天生的，一半也是人为的。
极平常的知觉都是带有几分创造性，极客观的东西之中都有几分主观的成分。
③美也是如此。
有审美的眼睛才能见到美，这棵古松对于我们的画画的朋友是美的，因为他去看时就抱了美感的态度。
你和我如果也想见到它的美，你须得把你那种木商的实用的态度丢开，我须得把植物学家的科学的态度丢开，专持美感的态度去看它。
④这三种态度有什么分别呢？⑤先说实用的态度。
做人的第一件大事就是维持生活，既要生活，就要讲究如何利用环境。
“环境”包含我自己以外的一切人和物在内，这些人和物有些对于我的生活有益，有些对于我的生活有害，有些对于我不关痛痒。
我们对于他们于是有爱恶的情感，有趋就或逃避的意志和活动，这就是实用的态度。
实用的态度起于实用的知觉，实用的知觉起于经验。
⑥科学的态度则不然，它纯粹是客观的、理论的。
所谓客观的态度就是把自己的成见和情感完全丢开，专以“无所为而为”的精神去探求真理。
吉林省八年级地理学业考试模拟试题(七)
★绝密★启用前2023年吉林省八年级学业考试模拟试题（七）地理注意事项：1. 本次考试由两部分组成, 考试时间50分钟, 满分50分。
2. 答卷前, 考生务必将自己的学校、班级、姓名、考生号填写在答题卡指定位置。
3. 请按题号顺序在答题纸上各题目的答题区域内整洁作答, 超出区域答题无效。
一、选择题：本题共20小题，每小题1分，共20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．读某国河流和城市分布图，下列叙述正确的是（）A．城市甲的经纬度是4°W，40°S B．河流a所在地区地势东南高，西北低C．从半球位置上看，该国位于东半球D．该国位于全部位于热带，终年炎热2．明明利用暑假去欧洲旅游，先到达罗马古斗兽场，再去参观卢浮宫博物馆，最后去感受“午夜的太阳”，浏览峡湾风光。
他去的国家依次是（）A．意大利、法国、英国B．意大利、法国、挪威C．西班牙、英国、挪威D．意大利、德国、希腊3．山区修建铁路成本较高，但俄罗斯的铁路线却沿南部山区修建，主要原因是（）A．南部纬度较高B．南部气温较高C．南部地势平坦D．南部海拔较高4．有一批货物从东南亚运往欧洲，该批货物可能是（）A．石油B．蕉麻C．羊肉D．小麦5．2022年7月27日8时43分（北京时间），菲律宾吕宋岛海域（17.70°N,120.55°E）发生7.0级强震，震源深度为10.0千米，菲方受灾严重。
据图文资料，判断下列说法正确的是（）A．该国所在的东南亚，地处重要的“十字路口”的位置B．该地地处太平洋板块与欧亚板块张裂地带，地震频发C．遭遇地震时，应该快速乘电梯逃离D．菲律宾吕宋岛海域以热带气候为主，全年高温多雨6．读某城市天气图，下列说法正确的是（）A．空气质量状况适合户外运动B．风向为东北风C．日较差是2°C D．10°C出现在14时7．关于日本的叙述错误的是（）A．人多地狭B．火山地震多发C．以温带海洋性气候为主D．东西方文化兼容8．某中国商船队从广州出发，沿“海上丝绸之路”到欧洲西部开展商贸活动，以下描述正确的是（）A．途经有“花园城市”美誉的国家时，遇到了很多人养狮子B．船队行至非洲东部索马里半岛时，看到当地居民大多是黑色人种C．途径红海时，看到其东部沿岸居民大多穿白色长袍，讲俄语D．船队最后到达欧洲鹿特丹港时，看到当地居民周末去清真寺做礼拜9．极地地区是科考宝地。
2023-2024学年北京市西城七年级册期末英语模拟试题(附答案)
2023-2024学年北京市西城七年级学期期末英语模拟试题听力理解(共20分) 一、听对话或独白，根据对话或独白的内容，从下面各题所给的 A 、B 、C 三个选项中选出最佳选项。
每段对话或独自你将听两遍。
(共12分，每小题1.5分）请听一段对话，完成第1至第2小题。
1.How old is Peter's brother?A.10.B.13.C.232.What is Peter's father's job?A.A policeman.B.A taxi driverC.A doctor.请听一段对话，完成第3至第4小题。
3.What is Betty's favorite animal?A.The cat.B.The lion.C.The tiger.4.What do they plan to do after school today?A.Visit the zoo.B.Sing a songC.Watch a movie请听一段对话，完成第5至第6小题。
5.When do they have science class?A.On Tuesday.B.On Wednesday.C. On Friday.6. Why does the girl love history?A.Because she is good at it.B.Because the homework is easy.C.Because she thinks it is interesting.请听一段独白，完成第7至第8小题。
7. What can you know from the speaker?A. The visitors will go to a museum.B. There is no free time for the visitors.C. The visitors will eat three meals together.8. Why does the speaker give this talk?A. To show people some fun places.B. To invite people to join a travel group.注意事项 1.本试卷共 11 页，共四部分，十道大题，57 道小题，其中第一大题至第九大题为必做题，满分 90 分。
地生中考模拟试题——地理(七)
地生中考模拟试题——地理（七）班级：姓名：相信你能成功!请认真阅读以下几点注意事项:1.本场测试包括地理和生物两门学科，分值各100分，时间共90分钟。
2.请按要求填涂答题卡。
1～40题填涂地理答案，41～80题填涂生物答案。
一、本大题共20小题，每小题2分，共40分。
每小题给出的三个选项中只有一项是符合题目要求的。
读“六大板块分布示意图”，并结合相关知识完成1～3题1．中国位于A．太平洋板块B．亚欧板块C．非洲板块2．有关板块构造学说的说法，不正确的是A．地球的岩石圈由六大板块拼合而成，板块都处于不断运动之中B．板块交界地带，地壳比较活跃，多火山、地震C．板块内部地壳也比较活跃3．喜马拉雅山脉由与碰撞挤压形成的。
A．亚欧板块、非洲板块B．亚欧板块、印度洋板块C．非洲板块、太平洋板块读“聚落景观图”，并结合相关知识完成4～5题。
4．三幅景观图片中，与城市聚落景观最吻合的是A．甲B．乙C．丙5．与甲聚落比较，丙聚落的A．居民全部从事渔业B．房屋更密集C．交通线路少读“某区域等高线地形图”，并结舍相关内容完成6～7题。
6．图示①②③中，地形为山谷的是A．④地B．②地C．③地7．山顶甲的海拔最有可能是A．840米B．640米C．740米中东民族文化差异大。
请结合相关内容完成8～9题。
8．中东的阿拉伯人主要属于人种。
A．黄色B．黑色C．白色9．被伊斯兰教、基督教、犹太教都奉为“圣城"的是。
A．开罗B．巴格达C．耶路撒冷读“沿东西经90°附近南极洲地形割面图”，并结合相关内容完成10-11题。
10．如果仅考虑海拔的影响，当和平站的气温为一10°时，文森山顶的气温约为A．一l0℃B．一26℃C．一40．8℃11．到南极洲考察，最可能看到的动物是A．①B．②C．③我国有众多的河流。
请结合相关知识完成12～13题。
12．我国的河流以为主，其中流入北冰洋的河流是。
A．内流河黄河B．内流河额尔齐斯河C．外流河额尔齐斯河13．读“长江流量的年变化曲线图”，长江流量最大的季节是，该季节流量大的原因是。
江苏省2024-2025学年七年级上学期期中模拟英语试题(含答案)
江苏省2024-2025学年上学期七年级英语期中模拟试题班级：_______________姓名：_______________(总分：100 分时间：90分钟)一、单选题（共10小题，每小题1分）（）1. Which “o" in the following words makes a different sound from the others?A. helloB. thoseC. noseD. pocket（）2. He does some __________ to ___________ himself keep fit.A. exercise, stayB. exercise, makeC. exercises, stayD. exercises, make（）3. －When shall we meet to have a talk _______ the trip?－_________ Sunday morning.A. about, inB. about, onC. to, in C. to, on（）4. －Why ________ these children interested in camping?－Because they can get closer __________ nature.A. are, toB. are, forC. do, toD.do, for（）5. －How many people ________ the parade（游行）？－Three hundred _________all.A. join, atB. join, inC. take part in, inD. take part in, at（）6. －_______ you stay at home every weekend?－No, we _________usually at home.A. Are, aren’tB. Do, don’tC. Are, don’tD. Do, aren’t（）7. _________more vegetables and fruit is good _______ your health.A. Eat, forB. Eating, forC. Eat, toD. Eating, at（）8. －________ do you hear from _______?－Almost every month.A. How often, himB. How often, his letterC. How long, himD. How long, his letter（）9. We have fun _______ the Comic-Con, it make us __________.A. to watch, feel happyB. to watch, to feel happyC. watching, feel happyD. watching, to feel happy（）10.－______ do you like your school?－We all love it . It ________ a big garden.A. What, likesB. How, is likeC. What , is likeD. How, likes二、完型填空（共10小题，每小题1分）Tom always does well in studies. All he ___1___ about are books, Tom knows everything except(除了)one small thing— he doesn’t know how to make friends. He only wants to be a student of Mr Rosen, his favourite professor (教授). And he writes letters to Professor Rosen to___2___ he’d like to go to his class.One day, Tom is very happy, because Professor Rosen comes to his house. They talks for a long time. The professor likes Tom a lot. At last, the professor asks, “Tom, tell me about your ___3___. What do you do for___4___?”There is silence(沉默). Tom ___5___ that he doesn’t really have any friends. “Well, 1 don’t havetime to make friends. I’m too__ 6__with my studies, ” he says.“That’s not good, Tom. Let me tell you. The ___7__ is not just about studies. It’s also about people . It’s ___8___ other interesting things. Here is a box. There are three things in it. I hope you ___9___ how to use them. It’s very difficult and you’ll ___10___ a friend to help you. I’ll be back in a week to see how you’re doing,” the professor says and leaves.Tom opens the box. In it are two baseball gloves and a ball.( )1. A. hopes B. wants C. likes D. thinks( )2. A. say B. speak C. talk D. tell( )3. A. classmates B. friends C. brothers D.family( )4. A. sports B. fun C.meal D. class( )5. A. believes B. forgets C. hopes D. finds( )6. A. free B. busy C. happy D. sad( )7. A. class B. school C. world D.family( )8. A.full of B. has C. have D.filled of( )9. A. to know B. know C.can know D.knowing( )10.A. want B. need C.hope D. teach三、阅读理解（共15小题，每小题1分）AThe dragon (龙) is a great animal in Chinese culture. It brings the wind and rain. It is said that every year on the second day of the second lunar (阴历) month, the dragon wakes up from its winter sleep and raises its head. Because of this, the day is called “Dragon Heads-raising Day”(Longtaitou). This year, it falls on February 24th.Old people believed that after Longtaitou, there would be more rain. And rain is very important to farming. So Longtaitou was the start of spring and farming.People have many ways to celebrate the festival. The most popular one is to have a haircut. Mary people believe that a haircut during the first lunar month may bring bad luck to your uncles —mainly your mother's brothers. They hope getting a haircut on Longtaitou keeps them away from bad luck.Among Chinese people’s festival traditions, there is always a place for food. During the Longtaitou festival, people eat food called after dragons. Noodles are called dragon's beard (longxu). Dumplings are dragon's ears (long'er). And spring rolls (春卷) are dragon's skin (longlin).People also have activities like dragon dancing on the day. In some places, people make dragon lanterns too. Small reed (芦苇) boats go down the rivers and carry the lanterns, which stand for people's best wishes and good luck.( ) 1.It’s said the dragon wakes up in ________.A. springB. summerC. autumnD. winter( ) 2. Why don’t people have a haircut during the first lunar month?A. Because they hope to keep healthy.B. Because they want to bring more rain.C. Because they believe this can bring bad luck to their uncles.D. Because their mother don’t allow（允许）them to do it.( ) 3. What is the purpose (目的) of this article?A. To tell people how to keep away from bad luck.B. To introduce some tasty food and fun activities.C. To introduce a traditional festival.D. To make a traditional festival popular again.BDo you know how Chinese people get their names? Are there any differences between girls' names and boys' names? And what do different names mean? Let me tell you now.In China, parents or grandparents give their child the first name and family name.The family name is also called last name. Usually the child's family name is the same(相同的) as the father's family name. But some parents will let their child use the mother's family name. It usually has one or two Chinese words in a first name. And the first name has the hopes and best wishes for the child from parents. Parents will use very nice words for the child's first name.Usually the first names for girls are different from the first names for boys because parents have different hopes for the girls and boys. Parents with boys hope their boys to be strong and powerful. But parents with girls hope their girls to be good-looking and kind.If the child is born(出生) on a special and good day, parents will give the child a first name that has something to do with the day. For example，if the child is born on October 1st—the Chinese National Day, parents may name the child "Guoqing" meaning the National Day,So, from the name of a Chinese man/woman，you can know something about him/her and his/her family,( )4. She is my good friend Xu Mingyue, her English name is Lucy.What’s his first name ?A. XuB. MingyueC. Xu MingyueD. Lucy( )5. Why do parents use different names for boys and girls?A. Because boys and girls live in different ways.B. Because they hope their girls are good-looking and kind.C. Because they hope their boys can be stronger and powerful.D. Because they have different hopes for them.( )6. According to the text, which of the following is TRUE?A. A child in China can not only have his/her father's last name but also his\her mother’s.B. In China, grandparents can't give their grandchild names.C. A man with the first name "Jianguo" may be born in 2008.D. People can know everything about others from their names.( )7. What does the text (文章）mainly talk about?A. Differences among Chinese names,B. How Chinese get their names.C. How people learn about others from their names.D. The differenc between Girls' names and boys' names in China.CWhen we are new in a school , how to make friends with others? This problem worried me last year, but now I have solved（已经解决）it! I would like to give you my advice(建议).Try to be friendly at school.Being a kind person will make people more interested in being your friends .No one likes to make friends with someone with a cold face.Smile at people to show them that you're friendly and easy﹣going.Try to join a sports club.Clubs are a great place to meet people with the same hobbies.If you join one，you'll meet many clubmembers. Over time，you could become good friends with some of them.Be confident（自信）when you want to make friends.The best way to make friends is to be confident in yourself. It's OK if you are not feeling confident now — just fake（假装）it until you make it!People will be more interested in being your friend if you do so.To act like being confident，stand up and don't forget to smile straight，When you talk to others, looking into a person’s eyes can be a greeting（问候）.( ) 8.Whose advice are these from？ A. A teacher. B A student . C. one’s parents . D.A member of a club.( ) 9. To make friends with classmates，you can do all of the following EXCEPT（除了）_______?A. Be confident.B.Join a club.C. Smile often.D.Fake being friendly.( ) 10. Which of the following is TRUE according to the passage （文章）？ A.Don't let them know that you're interested in them.B.People will be not interested in you with a cold face all day.C.Try to stay by yourself.D.Join a sports club because you can make you stronger there.( ) 11.Where can you see these tips？ A.In a story book.B.In a magazine for parents.C.In a history book.D.In a magazine for students.DTry to be happy in your life! There are some ways to make you happy or feel good about yourself.★1. Look in the mirror (镜子) and say to yourself, “I’m a special person and there’s no one in the world like me. I can do anything!” It works!★2. Do something nice for someone. Helping others always makes you feel good.★3. Smile! Be friendly to people around you. Look for the good things in your friends and family.★4. Learn something new! Do you always want to learn how to swim? Go for it!★5. Read and start a diary. Turn off the TV and let your imagination (想象) fly! If you have any ideas or dreams, write them down!★6. Stay with your family. We all need our family time. Talk with your mum and dad or maybe even your cousin.★7. Try not to be alone. Get out to enjoy the sunshine and flowers. Nature can give you energy.( )12. Why do you look in the mirror?A. Because I must keep ourselves clean .B. Because I am a special person.C. Because I must be confident（自信）.D. Because I can do anything.( )13. Where can you read this passage (文章)?A. In a story book.B. In a nature book.C. In a magazine.D. In a diary(日记).( )14. If you want to learn something new, just_________ ?A. Watch TV.B. do it.C. Speak to yourself.D. Talk with your friends.( )15. What’s the best title of the passage?A. Do something nice.B. Smile often.C. Be a better you.D. Learn something new.四、语言基础知识A) 根据括号中所给的汉语或首字母写出单词，使句子意思完整正确。
2023-2024学年浙江省杭州市七年级下学期期中语文质量检测模拟试题(含答案)
2023-2024学年浙江省杭州市七年级下学期期中语文质量检测模拟试题第I卷选择题一、听力(共20小题，每题1分，计20分)第一部分听对话回答问题（计10分）本部分共有10道小题，每小题你将听到一段对话，每段对话读两遍。
在听每段对话前，你将有5秒钟的时间阅读题目；听完每段对话后你将有5秒钟的时间选出你认为最合适的答案。
听到“嘀”的信号时，进入下一小题。
1.What is Simon going to be?A. B. C.2.How does Millie usually go to the park?A. B. C.3.Whose clothes are those?A. B. C.4.Which way can the man get to the bank?A. B. C.5.How often does Shirley have a piano lesson?A.Every day.B.Once a week.C.Twice a month.6.When will the speakers go to Shanghai Disneyland?A.This Friday.B.This Saturday.C.This Sunday.7.What’s Anna’s dream house like?A.It’s large with a big balcony.B.It’s big with a beautiful garden.C.It’s large with a small balcony.8.How long will the woman stay at the hotel?A.For two days.B.For three days.C.For four days.9.Where does the girl live?A.In Chengdu.B.In Beijing.C.In Nanjing.10.Why won’t Betty go to the farm?A.Because she has to take part in a party.B.Because she has to look after her mother.C.Because she has to do housework.二、听对话和短文答题（计10分）你将听到一段对话和两篇短文，各听两遍。
职业高中高考语文模拟试题7
模拟试题（七）一、单项选择题Ⅰ（共24分每小题2分）1．下列词语中加点汉字的读音全都不相同的一组是（）A．玷．污粘．贴铁砧．沾．沾自喜B．泥淖．扔掉．悼．念绰．绰有余C．嫡．系提．防长堤．啼．笑皆非D．纰．漏庇．护秕．谷比．翼双飞2．下列词语中书写没有错误的一组是（）A．怪涎兴致勃勃栩栩如生针贬时弊B．眺望层峦叠障赞不绝口事必恭亲C．峥嵘别具一格意兴盎然无精打采D．憋闷一泄千里正襟危坐战略布署3．依次填入下列各句横线处的词语，恰当的一组是（）①这是我们白家祖辈_______下来的秘方，就是掉脑袋，也不能让日本人拿去！②几家上市公司的倒闭，引发了股市的大幅_______；证监会对此予以高度关注。
③多年来，我养成了一种_________，除夕总要到花市挤一挤，观花海，也观人海。
A．流传振荡癖好B．留传震荡癖好C．流传震荡嗜好D．留传振荡嗜好4．下列各句中，加点的成语使用不恰当的一句是（）A．这种草药能治疗高血压病，对人体没有任何副作用，它的原理多见于各种医学书刊，临床使用又屡试不爽．．．．，你还有什么可怀疑的？B．最近几年，俄罗斯杜布纳核研究所可谓是惨淡经营．．．．，国家拨给的预算实际上只能到位一半，研究所只能向各种基金组织申请研究补助。
C．作为学生和语文知识之间的一座桥梁，中学语文教师如果能够充分运用兴趣原理，提高教学的趣味性，必然可以收到事半功倍．．．．的效果。
D．《水浒传》英译为《在河边发生的故事》，《西游记》英译为《猴》，《红楼梦》俄译《红色阁楼里的梦》，韵味全失，中国读者对此简直不可理喻．．．．。
5．下列句子标点符号的使用，正确的一句是（）A．我们在田间，可以看到有些瓜果、蔬菜（如丝瓜、番茄）的叶子是平伸的，有些作物（如水稻、小麦）的叶子是直立的。
B．王老师走进教室，问道：“作业写完了吗？同学们。
”C．同时，在产品的包装上、商标上、说明书的文字、图片上讲究精美，也是必要的。
D．还有不少因素使铁容易生锈，如水中有盐，铁制品表面不干净，表面粗糙，铁中杂有其他金属……等等。
2023-2024学年湖南省怀化市七年级上册期末考试语文模拟试题(附答案)
2023-2024学年湖南省怀化市七年级上学期期末考试语文模拟试题说明事项:1.本试卷共22题，满分120分，考试时量：120分钟；2.答题前，请考生先将自己的姓名、准考证号、座位号等信息在答题卡上填写清楚；3.必须在答题卡上答题，在草稿纸、试卷上答题无效；一、语言积累与运用（共18分）1.下列词语中加点字注音有误的一项是（）（2分）A. 匿．笑（nì）吮．吸（shǔn）骇．人听闻（hài）踉．踉跄跄（liàng）B. 冰雹．（bāo）蜷．曲（juǎn）丝丝缕．缕（lóu）絮絮叨．叨（dāo）C. 干涸．（hé）威慑．（shè）头晕目眩．（xuàn）更胜一筹．（chóu）D. 滑稽．（jī）嬉．戏（xī）随声附和．（hè）忍俊不禁．（jīn）2.下列句子中加下划线的成语使用不当的一项是（）（2分）A. 无边无际的草原上，牛羊正欢快地奔跑着。
B. 自从郊外那片不毛之地忽然涌出石油之后，这个小镇就匆匆繁华起来了。
C. 看到荒原变成了绿洲，老人忍俊不禁地笑了。
D. 现在的孩子，什么事情都要刨根问底。
3.下面一段话选自某班的《班级日志》，其中表述有语病的一句是（）（ 2分）①我们班负责本周的校园执勤工作，大家深感责任重大。
②每天，只要广播声一响起，我们就按时到岗，各司其职。
③一周下来，我们班获得了“优秀执勤班级”的称号，是所有同学共同努力的结果。
④通过这次执勤，使我们的工作能力得到了很大的提升。
A. ①B. ②C. ③D. ④4.下列句子顺序排列最恰当的一项是（）（2分）①怎样才能写得有感情呢？②这是更高的要求。
③关键是要写自己亲身经历的、有真切感受的事，说发自内心的话。
④很多时候，记事也是为了传达情感，分享体验，因此，还要学会写得有情感。
A. ④②①③B. ④①②③C. ④③①②D. ④①③②5.下列有关文学常识的表述，错误的一项是（）（ 2分）A．《论语》是记录孔子及其弟子言行的一部书，是儒家经典著作。
2024-2025学年牛津译林版英语七年级上册期中模拟试题(含答案)
(2024译林江苏)2024-2025学年第一学期七年级英语期中模拟试题（满分120）一、单词辩音，选出一个划线部分发音与其他三个不同的选项.(每题1分，共5分)（）1. A. clock B often C. job D. open（）2. A. food B.school C.look D. cool（）3. A. team B.bread C. head D. ready（）4. A. dinner B.term C. father D. after（）5. A. drink B.English C. sing D. orange二、选择题(每题1分，共15分)（）1. The Hong Kong-Zhuhai-Macao Bridge （港珠澳大桥）started to be in use _____ nine ______ October 24th, .A. in, atB. on, inC. at, onD. at, at（）2. --- _______ do you play basketball with your friends? --- Every Saturday afternoon.A. How manyB. How oftenC. How longD. How（）3. Mr Yang and Mrs Yang has a baby girl, _______ love _______ very much.A. they, sheB. them, herC. they, herD. them, she（）4.Sandy doesn’t have much time to play tennis . She ______ plays tennisA. seldomB. alwaysC. usuallyD. often（）5. _______ Li Na come from America ? No, he ________ from China.A. Is , comeB. Does , isC. Is , comesD. Does , come（）6. --- ______ does Andy’s father look? --- He looks strong and tall.A. HowB. WhenC. WhereD. What（）7. ----My mother will take me to Shanghai Disneyland this Sunday.----__________!A. I’m sorry to hear thatB. Have great fun thereC. That’s OKD. That’s right（）8. Simon loves Eddie. ___▲___ takes a walk with him every day.A. SheB. HeC. ItD. I（）9. Millie enjoys ___▲___with her friends on Wechat at the weekends.A. chattingB. to chatC. chatD. chats（）10.—___▲___ do you go to school every day? — On foot.A.WhyB.WhatC. HowD.Where（）11. Look! There ___▲___a teacher and some students playing football on the playground.A. hasB. areC. isD. have（）12. Nora ______ up early and he ______ late for school.A. always gets; is neverB. gets always; never isC. always gets; never isD. gets always; is never（）13. Everyone in their class ______ after-school activities.A. enjoys to doB. enjoys doingC. enjoy to doD. enjoy doing（）14. --- ______ your brother a member of the Reading Club?--- No, he ______ like reading.A. Does; isB. Do; doesn’tC. Is; doesn’tD. Is; isn’（）15. --- Mr. Wu hopes ______ will have the drawing lessons tomorrow.--- Oh, dear. I wanted ______ to help me do the cleaning.A. Amy and me; she and herB. Amy and I; you and sheC. Amy and me; her and youD. Amy and I; you and her三、完型填空(每题1分，共10分)The Story of the Enormous（巨大的）Turnip（萝卜）A man has a seed（种子）. He plants the seed in his _1__. The seed grows into a turnip. The turnip is very ___2__. It's enormous!The man is hungry. He decides（决定）to make some delicious（美味的）turnip soup （汤）. He pulls the turnip ___3__ it doesn’t move.The man sees a woman. "Come and __4___! " he says. The woman pulls（拉）the man. The man pulls the turnip. The turnip doesn’t move.They see a boy. "Come and help!" they say. The ___5__ pulls the woman. The woman pulls the man. The man pulls the turnip. The turnip __6___ move.They see a dog. "Come and help!" they say. The dog pulls the boy. The boy ___7___ the woman. The woman pulls the man. The man pulls the turnip. The turnip doesn’t move.They see a mouse（老鼠）. "Come and help!" they say. The mouse pulls the dog. The dog pulls the boy. The boy pulls the woman. The woman pulls the man. The man pulls the turnip. They pull and pull and ... the turnip starts to __8__.___9___the evening, the man makes a big pot（锅）of turnip soup and _10__ eat it together（一起）happily.( ) 1. A. playground B. garden C. house D. library( ) 2. A. small B. tall C. big D. short ( ) 3. A. and B. so C. or D. but ( ) 4. A. help B. play C. dance D. run ( ) 5. A. girl B. man C. woman D. boy ( ) 6. A. does B. is C. doesn’t D. isn’t ( ) 7. A. pulls B. pull C. push（推） D. pushes ( ) 8. A. move B. turn C. go D. get( ) 9. A. In B. On C. At D. By ( ) 10. A. he B. she C. we D. they四、阅读理解(每题2分，共30分)AMr. and Mrs. Su don’t often go out in the evening, but today they go out for a walk after supper. They go to the park and have a good time there. On their way home, Mrs. Su says to Mr. Su, “Look! A woman is running in the street and a man is running after her.” Mr. Su says, “What’s the matter(怎么了)? Let’s go and help her.”Now the woman gets near them. Mr. Su asks, “Shall we help you?” “No, thank you,” the woman says, “My husband（丈夫）and I are running home, and the slower (较慢的)one does the housework.”( ) 1. In the evening, Mr. and Mrs. Su often __________.A. go out for a walkB. go out and watch people runningC. Stay(停留) at homeD. stay at home and do housework( ) 2. Mr. and Mrs. Su have a good time __________.A. at homeB. in the parkC. in the streetD. today( ) 3. They see __________ running in the street.A. a womanB. a manC. a man and a womanD. many people( ) 4. The woman is running __________ the man..A before B. after C. beside D. behind( ) 5.The underline(划线) word “housework” is __________.A. homeworkB. sports people do in their housesC. staying in the houseD. cleaning, washing and cookingBI'm a bird. My little round house is up in a tree. It has no doors or windows. I do not go up any stairs (楼梯) to get to my house. I just fly into or out of it. I always go home early, and never sit up late at night. I think it is not good for me or for boys and girls.I get up very early in the morning to look for something to eat. Do you know an old saying: “The early bird catches the worm.”？That's true because the early morning is the best time to find worms, which I like very much.As I fly about, I see many things and people. I see cows and sheep eating grass. I see rabbits playing in the fields. I see people going to work, and children going to school.You like to go out for a walk, but I go out for a fly. I can fly over the house, over trees, and over the hills and far away. It's late now. I cannot stay to tell you any more. Mum must be waiting for me at home. I don't want Mum to worry about me, so I have to go. Bye bye!6. The bird’s home is ________.A. a big house up in the treeB. a little house with no doorsC. a big house down the hillsD. a little house with round windows7. In Para.1(第一段) the underlined word “it”refers(指) to ________．A. going home earlyB. sitting up lateC. flying out of homeD. staying at home8. What does the underlined sentence “The early bird catches the worm.” mean?A. 鸟为食亡。
初中中考数学全真模拟试题卷七(带答案)
初中毕业生学业（升学）模拟考试数学考生注意：1.一律用黑色笔或2B铅笔将答案填写或填涂在答题卡指定位置内。
2.本试卷满分150分，考试用时120分钟。
一、选择题（本大题共10小题，共40.0分）1.下列表达错误的是()A. 比a的2倍大1的数是2a+1B. a的相反数与b的和是−a+bC. 比a的平方小1的数是a2−1D. a的2倍与b的差的3倍是2a−3b2.如图，AB//CD，直线EF分别交AB，CD于点E，F，EG平分∠BEF，若∠EFG=64°，则∠EGD的大小是()A. 132°B. 128°C. 122°D. 112°3.对甲、乙、丙、丁四名选手进行射击测试，每人射击10次，平均成绩均为9.5环，且他们的方差如下表所示：选手甲乙丙丁方差 1.560.60 2.500.40则在这四个选手中，成绩最稳定的是()A. 甲B. 乙C. 丙D. 丁4.如图，正方形ABCD的边长为4，点A的坐标为(−1,1)，AB平行于x轴，则点C的坐标为()A. (3,1)B. (−1,1)C. (3,5)D. (−1,5)5.在平面直角坐标系中，点A是双曲线y1=k1x(x>0)上任意一点，连接AO，过点O作AO的垂线与双曲线y2=k2x (x<0)交于点B，连接AB，已知AOBO=2，则k1k2=()A. 4B. −4C. 2D. −26.如图，在正方形ABCD中，边长AB=1，将正方形ABCD绕点A按逆时针方向旋转180°至正方形AB1C1D1，则线段CD扫过的面积为()A. π4B. π2C. πD. 2π7.若点(a,y1)、(a+1,y2)在直线y=kx+2上，且y1>y2，则该直线所经过的象限是()A. 第一、二、三象限B. 第一、二、四象限C. 第二、三、四象限D. 第一、三、四象限8.如图，在Rt△ABC中，∠ACB=90°，∠A=35°，以C为旋转中心，将∠ABC旋转到△A′B′C的位置，点B在斜边A′B′上，则∠BDC为()A. 70°B. 90°C. 100°D. 105°9.如图，已知矩形ABCD，AB=3，BC=4，AE平分∠BAD交BC于点E，点F、G分别为AD、AE的中点，则FG=()A. 52B. √102C. 2D. 3√2210.如图1，在菱形ABCD中，动点P从点B出发，沿折线B→C→D→B运动，设点P经过的路程为x，△ABP的面积为y.把y看作x的函数，函数的图象如图2所示，则图2中的a等于()A. 25B. 20C. 12D. 8√3二、填空题（本大题共10小题，共30.0分）11.阅读理解：引入新数i，新数i满足分配律，结合律，交换律，已知i2=−1，那么(1+i)⋅(1−i)=______．12.如图，AB//CD，AD平分∠BAC，且∠D=72°，则∠C的度数为______．13.通过画出多边形的对角线，可以把多边形内角和问题转化为三角形内角和问题．如果从某个多边形的一个顶点出发的对角线共有8条，那么该多边形的边数是______．14.二次根式√2−x在实数范围内有意义，x的取值范围是______．+(2x−1)0有意义的x的取值范围是______．15.使函数y=1√x+316.一个质地均匀的小正方体，六个面分别标有数字“1”“1”“2”“4”“5”“5”，随机掷一次小正方体，朝上一面的数字是奇数的概率是______．17.如图，在△ABC中，BD，BE将∠ABC分成三个相等的角，CD，CE将∠ACB分成三个相等的角．若∠A=105°，则∠D等于______度．18.如图，三角形ABC的周长为22cm，现将三角形ABC沿AB方向平移2cm至三角形A′B′C′的位置，连接CC′，则四边形AB′C′C的周长是______．19.点P(2a−1,a+2)在x轴上，则点P的坐标为______．20.若小球在如图所示的地面上自由滚动，并随即停留在某块方砖上，那么它最终停留在黑色区域的概率是______．三、解答题（本大题共6小题，共80.0分）3−√(−2)2+(−√5)221.（12分）(1)计算√−27(2)求x的值：3(x−1)2−27=022.（12分）为让更多的学生学会游泳，少年宫新建一个游泳池，其容积为480m3，该游泳池有甲、乙两个进水口，注水时每个进水口各自的注水速度保持不变．同时打开甲、乙两个进水口注水，游泳池的蓄水量y(m3)与注水时间t(ℎ)之间满足一次函数关系，其图象如图所示．(1)根据图象求游泳池的蓄水量y(m3)与注水时间t(ℎ)之间的函数关系式，并写出同时打开甲、乙两个进水口的注水速度；(2)现将游泳池的水全部排空，对池内消毒后再重新注水．已知单独打开甲进水口注满倍．求单独打开甲进水口游泳池所用时间是单独打开乙进水口注满游泳池所用时间的43注满游泳池需多少小时？23.（14分）如图，在平面直角坐标系中，已知△ABC的三个顶点坐标分别是A(1,1)，B(4,1)，C(3,3)．(1)将△ABC向下平移5个单位后得到△A1B1C1；(2)将△ABC绕原点O逆时针旋转90°后得到△A2B2C2，请画出△A2B2C2；(3)判断以O，A1，B为顶点的三角形的形状，并说明理由．24.（12分）阅读下列“问题”与“提示”后，将解方程的过程补充完整，求出x的值．【问题】解方程：x2+2x+4√x2+2x−5=0．【提示】可以用“换元法”解方程．解：设√x2+2x=t(t≥0)，则有x2+2x=t2，原方程可化为：t2+4t−5=0，【续解】25.（14分）某服装厂生产A品种服装，每件成本为71元，零售商到此服装厂一次性批发A品牌服装x件时，批发单价为y元，y与x之间满足如图所示的函数关系，其中批发件数x为10的正整数倍．(1)当100≤x≤300时，y与x的函数关系式为______．(2)某零售商到此服装厂一次性批发A品牌服装200件，需要支付多少元？(3)零售商到此服装厂一次性批发A品牌服装x(100≤x≤400)件，服装厂的利润为w元，问：x为何值时，w最大？最大值是多少？26.（16分）如图，AB为⊙O的直径，C为BA延长线上一点，CD是⊙O的切线，D为切点，OF⊥AD于点E，交CD于点F．(1)求证：∠ADC=∠AOF；(2)若sinC=1，BD=8，求EF的长．3答案1.D2.C3.D4.C5.B6.B7.B8.D9.B10.C11.212.36°13.1114.x≤215.x>−3且x≠1．216.2317.13018.26cm19.(−5,0)20.3821.解：(1)原式=−3−2+5=0；(2)(x−1)2=9，则x−1=±3，∴x=−2或x=4．22.解：(1)设y与t的函数解析式为y=kt+b，{b =1002k +b =380， 解得，{k =140b =100，即y 与t 的函数关系式是y =140t +100，同时打开甲、乙两个进水口的注水速度是：(380−100)÷2=140(m 3/ℎ)；(2)∵单独打开甲进水口注满游泳池所用时间是单独打开乙进水口注满游泳池所用时间的43倍．∴甲进水口进水的速度是乙进水口进水速度的34， ∵同时打开甲、乙两个进水口的注水速度是140m 3/ℎ， ∴甲进水口的进水速度为：140÷(34+1)×34=60(m 3/ℎ)， 480÷60=8(ℎ)，即单独打开甲进水口注满游泳池需8h ．23.解：(1)如图△A 1B 1C 1即为所求．(2)如图△A 2B 2C 2即为所求．(3)以O ，A 1，B 为顶点的三角形是等腰直角三角形．理由：∵OB =√12+42=√17，OA 1=√12+42=√17，BA 1=√32+52=√34，∴OB =OA 1，OB 2+OA 12=AA 12， ∴∠BAA 1=90°，∴△BAA 1是等腰直角三角形．24.解：t 2+4t −5=0，(t +5)(t −1)=0， t +5=0或t −1=0，∴t 1=−5，t 2=1，当t =−5时，√x 2+2x =−5，此方程无解；当t =1时，√x 2+2x =1，则x 2+2x =1，配方得(x +1)2=2，解得x 1=−1+√2，x 2=−1−√2；经检验，原方程的解为x 1=−1+√2，x 2=−1−√2．25.解：(1)当100≤x ≤300时，设y 与x 的函数关系式为：y =kx +b ，根据题意得出：{100k +b =100300k +b =80， 解得：{k =−110b =110， ∴y 与x 的函数关系式为：y =−110x +110， (2)当x =200时，y =−20+110=90， ∴90×200=18000(元)，答：某零售商一次性批发A 品牌服装200件，需要支付18000元；(3)分两种情况：①当100≤x ≤300时，w =(−110x +110−71)x =−110x 2+39x =−110(x −195)2+3802.5，∵批发件数x 为10的正整数倍，∴当x =190或200时，w 有最大值是：−110(200−195)2+3802.5=3800； ②当300<x ≤400时，w =(80−71)x =9x ， 当x =400时，w 有最大值是：9×400=3600，∴一次性批发A 品牌服装x(100≤x ≤400)件时，x 为190元或200元时，w 最大，最大值是3800元．26.解：(1)连接OD ，∵AB 为⊙O 的直径， ∴∠ADB =90°，∴AD⊥BD，∵OF⊥AD，∴OF//BD，∴∠AOF=∠B，∵CD是⊙O的切线，D为切点，∴∠CDO=90°，∴∠CDA+∠ADO=∠ADO+∠BDO=90°，∴∠CDA=∠BDO，∵OD=OB，∴∠ODB=∠B，∴∠AOF=∠ADC；(2)∵OF//BD，AO=OB，∴OE是△ABD的中位线，∴AE=DE，OE=12BD=12×8=4，∵sinC=ODOC =13，∴设OD=x，OC=3x，∴OB=x，∴CB=4x，∵OF//BD，∴△COF∽△CBD，∴OCBC =OFBD，∴3x4x =OF8，∴OF=6，∴EF=OF−OE=6−4=2．。
高考地理模拟试题卷(七)及答案解析
高考地理模拟试题卷(七)及答案解析地理本试卷分选择题和非选择题两部分，满分100分，考试用时50分钟。
一、选择题：共11小题，每小题4分，共44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。
(创新题)甘肃省锦屏镇镇政府将废弃窑洞改造成牛舍“托牛所”，附近农户将自家肉牛寄养在此育肥7个月，每日付费10元，由“托牛所”统一科学配比饲料增重并控制肥瘦比例。
出售肉牛所获利润“托牛所”和寄养农户各得一半。
据此完成1～2题。
1．附近农户将肉牛寄养在“托牛所”主要是为了()A．提高肉牛价值B．便于外出务工C．规避饲养风险D．降低饲养成本2．与传统牛舍相比，“托牛所”选择在窑洞设立是因为这样有利于()A．统一管理B．集中排污C．扩大规模D．调节室温加拿大西北滨海地区的图克托亚图克(69°N，133°W)有一土丘，冬季可高达36米，其下部为冰体，上部为泥土层。
因季节性冻土广布，随着冰体不断扩大，挤压周围土层，使地面隆起形成土丘。
下图为某气候研究团队在该地夏末的航拍图，可见湖泊与植被遍布的地面。
据此完成3～5题。
3．形成该土丘的主要外力作用是()A．海浪堆积B．冻融作用C．湖水堆积D．风化作用4．根据航拍图所见，可推测图中地区()A．地下水位较高B．土丘海拔下降C．高山草甸广布D．冰原气候为主5．运用遥感技术不能直接监测该地的()A．湖水温度B．湖泊面积C．植被类型D．土丘剖面位于天山西部的新疆果子沟有“伊犁第一景”之称。
2022年6月22日一辆旅游大巴行驶至G312公路甲路段时，车内右排(车行方向为前方)游客感觉阳光刺眼。
下图为果子沟附近等高线示意图。
据此完成6～8题。
6．图示区域中G312公路隧道段的总长约为()A．3千米B．6千米C．9千米D．12千米7．旅游大巴行驶至乙地时游客发现公路两侧植被()A．南疏北密B．南密北疏C．南北皆密D．南北皆疏8．大巴行驶至甲路段时，北京时间最可能是()A．1：40 B．14：00C．15：20 D．21：002021年下半年来欧洲及世界很多地区出现能源供应紧张局面，我国少数地区也出现了限电限产的现象，保障国家能源安全迫在眉睫。
全国高中化学竞赛模拟试题7
4-2、写出制备A的化学方程式
4-3、A的晶体分析结果表明，M的配位数为6,试说明M的配位数是如何满足的
4-4、给出Y的化学式
第五题、金属钛属于立方面心晶体。它与碳或氢气反应，形成碳化物或氢化物，外来的原子分别占满金属钛晶体存在的不同类型的空隙。
5-1氢原子、碳原子分别占有什么样的空隙？对你的判断解释之。
7-1．写出Pt（II）离子的电子结构，说明配合物A有无磁性。
7-2．写出B的平面结构式并命名
7-3．写出配合物A的分子式及结构式
第八题、SiC具有高硬度、高耐磨性、高耐腐蚀性及较高的高温强度等特点，已成为一种重要的工程材料。其晶体具有六方ZnS型结构，晶胞参数为a＝308pm，c＝505pm，
已知C原子的分数坐标为0，0，0和；Si原子的分数坐标为和
。
第三题、某一简易保健用品，由一个产气瓶、A剂、B剂组成，使用时，将A剂放入产气瓶中，加入水，无明显现象发生，再加入B剂，则产生大量的气体供保健之用。经分析，A剂为略带淡黄色的白色颗粒，可溶于水，取少量A溶液，加入H2SO4、戊醇、K2Cr2O7溶液，戊醇层中呈现蓝色，水层中则不断有气体放出，呈现蓝绿色。B剂为棕黑色粉末，不溶于水，可与KOH和KClO3共溶，得深绿色近黑色晶体，该晶体溶在水中又得到固体B与紫红色溶液。回答下列问题：
第十题、以苯和丙酰氯为原料制备1–(4–溴苯基)丙烯的反应式如下：
10-1请在(a)–(f)中填入所得产物的结构或所需的试剂及必要的反应条件；
10-2以苯、不超过4个碳原子的任何有机物及必要的无机试剂为原料合成2–丁基–1–硝
基–4–氯苯。
第十一题、具有高能量密度的锂二次电池，有可能成为空间卫星等领域的动力源。最近有人采用化学交联法由二氯环磷氮烯聚合物(NPCl2)3和三硫化二钠作用合成出新型无机材料三硫代环磷氮烯聚合物[(NPS3)3]n作为锂二次电池正极材料，以提高其能量密度和良好的循环性能。
河南省郑州市中原区2023-2024学年七年级上册期末英语模拟试题(附答案)
河南省郑州市中原区2023-2024学年七年级上学期期末英语模拟试题注意：本试卷分试题卷和答题卡两部分。
考试时间90分钟，满分100分。
考生应首先阅读试题卷及答题卡上的相关信息，然后在答题卡上作答，在试题卷上作答无效。
交卷时只交答题卡。
一、听力理解（20小题，每小题1分，共20分）第一节听下面五个句子，选出与句子内容相符的选项，并在答题卡上将该项涂黑。
每个句子读两遍。
A. B. C. D. E.1. ______2. ______3. ______4. ______5. ______第二节听下面五段对话，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，并在答题卡上将该项涂黑。
每段对话读两遍。
6. What’s the girl’s name?A. Sara White.B. Sara Green.C. Sara Brown.7. Who is the girl in the photo?A. Tom’s sister.B. Tom’s cousin.C. Tom’s aunt.8. Where are Bob’s pens?A. On Bob’s desk.B. On Sally’s desk.C. On teachers’ desk.9. When is the basketball game?A. On October 15th.B. On October 20th.C. On October25th.10. Where are they?A. At home.B. At school.C. At the store.第三节听下面两段对话，每段对话后有几个小题，从题中所给的A、B、C三个选项中选出最佳选项，并在答题卡上将该项涂黑。
每段对话读两遍。
A. B. C. D. E.16. ______17. ______18. ______19. ______20. ______二、阅读理解（小题，每小题分，共20分）Item Quantity Price RotalMilk Bread Notebook Pencil box Socks HatCup Model car 21312132¥5.00¥6.00¥3.00¥15.00¥7.00¥18.00¥5.00¥14.00¥10.00¥6.00¥9.00¥15.00¥14.00¥18.00¥15.00¥28.00Subtotal: Discount: Total Price:¥115.00 -¥5.00¥110.00Payment: Bank CardCard Number: **** **** **** 1234Thank you for shopping with us! Please call the manager (经理) atif you need any help. Visit us soon again!根据材料内容选择最佳选项，并在答题卡上将该项涂黑。