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。
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人力资源管理模拟试题（七）
姓名＿＿＿＿＿学号＿＿成绩＿＿＿＿＿
一、名词解释(每小题3分，共15分)
1.工资制度
2.人员培训方法
3.医疗保险
4.正激励
5.岗位分类
二、选择题(本大题共10小题，每小题2分，共20分)
1、新员工培训的目的是（）
A、消除疑虑
B、增进了解
C、培养归属感
D、适应工作
2、培训工作流程主要包括以下阶段（）
A、培训设计和实施
B、操作说明
C、定期检查
D、培训需求分析
3、培训内容设计的同时，要选择适当的培训方法是（）
A、授课
B、远程教育
C、录像
D、案例
4、企业员工招聘与选用的方法有（）笔试、面试和心理测验。
A、笔试
B、心理测验
C、面试
D、申论
5、对应聘者的提问有哪些方式（）
A、隐藏性提问
B、展开式提问
C、有计划地提问
D、公开性的提问
6、撰写招聘小结的原则有（）
A、由招聘的主要负责人撰写
B、明确指出成功之处和失败之处
C、真实地反映招聘的全过程
D、坚持实事求是的原则
7、工作描述主要包括以下几个方面（）
A、工作内容的描述
B、工作条件的描述
C、聘用条件的描述
D、工作名称的描述
8、工作设计的形式有（）
A、工作轮换
B、工作丰富化
C、工作扩大化
D、以员工为中心的工作再设计
9、下列内容属于生理要求的因素有（）
A、运动的灵活性
B、气质
C、感觉器官灵敏度
D、事业心
10、人力资源计划的主要内容有（）
A、使用计划
B、职业计划
C、人力资源预算
D、配备计划
三、判断改错题（每小题5分，共25分）
1、初级培训则应侧重于学习新理论、新观念、新方法。
培训的级别越高，所采用的组织形式则越趋大型化、长期化。
2、核心面谈中招聘者要预先准备好需要了解的重点内容和提问提纲、提问方式，首先要有友好、坦率的态度。
3、笔试的结果，既能反映应聘者的学历，又能掌握的知识量有多少，往往能表明应聘者的实际工作能力。
4、生物型工作设计方法倾向于强调提高工作的激励潜力。
5、工作丰富化是指扩大工作的范围。
工作横向延伸，它是指工作范围的扩大，目的在于向员工提供更多的工作，即让员工完成更多的工作量。
四、简答题(本大题共5小题，每小题5分，共25分)
1、为了达到企业总体薪酬规划的目标，企业所要考虑的政策有哪些？
2、企业培训工作管理的主要内容有哪些？
3、职位空缺产生的主要原因有哪些？
4、一般而言，当组织出现以下情况时，就可以考虑工作的重新构筑或设计的哪些问题？
5、在制定具体计划时，如果预测结果表明组织在未来某一时期内在某些岗位上人员过剩，即供过于求，可选择的一般策略有哪些？
五、论述题(共15分)
试述对人力资源计划的审核与评估的必要性及注意事项。