常见错题
常见的错题2
常见的错题21.Mr LI regards Ningxia as his second _____ because he has been here for over twenty years.A. familyB. houseC. roomD. home2. _____ mothers can’t come to the meeting because they have gone to Dalian.A. Sally’s and JaneB. Sally and Jane’sC. Sally’s and Jane’sD. Sally and Jane3. It’s difficult for me to decide which one to choose, because ____ of them are good.A. neitherB. bothC. eitherD. each4. –How many ___ do you want? -Two, please.A. kilos of eggB. kilo of eggsC. kilos of eggsD. kilo of bread5. Last night, there was a food accident. Ten ____ were ill, but no ______ were lost.A. child; livesB. children; lifeC. children; livesD. child; life6. The _____ of the house were covered with yellow____.A. roofs; leavesB. roves ; leafsC. roofs; leafsD. rooves ; leaves7. ____ eat ____ and deer eat grass. This is called “food child”.A. Wolf; deerB. Wolves; deersC. Wolves; deerD. Wolf; deers8. Cut the apple into ____. Give the bigger part to your little brother and the other is ____.A. halfs; yourselfB. halves; youC. halves; yourD. halves; yours9. He and she are exactly as tall as ____.A. themselvesB. themC. theirD. each other10. There are lots of English books here, and ____ of them is easy to understand.A. bothB. allC. everyD. each11. –How many monkeys did you see in the zoo? -_____.A. NeverB. NoneC. NO oneD. Nothing12. I didn’t get any letters yesterday, but there were ____ this morning.A. a littleB. fewC. littleD. a few13. The film isn’t interesting. ____ people like it.A. FewB. A littleC. A fewD. Little14. –You’ve dropped ___ “s” in the word “necessary”. –Oh, ___ letter “s” is doubled.a. a; a B. a; the C. an; the D. the; the15. –How about ___ charity show? --I should say it was ___ success.A. the; aB. the; /C. a; aD. a; /16. –This is ___ useful dictionary, I think. –So it is, and it’s ___ unusual one.A. an; /B. an; anC. a; anD. a; a17. ____old man behind Mary is ___ university teacher.A. An; anB. A; theC. The; aD. The; an18. Mary has a bad cold. She has to stay in ___ bed.A. aB. /C. theD. an19. –When did your uncle arrive ___ China?--He got to Guangzhou ___ the morning of the 16th of April.A. at; inB. in; inC. to; onD. in; on20. –Is the tie made ___ silk? --Yes. It’s made ___ Italy.A. from; inB. of; inC. from; ofD. of; from21. Do you know that Fujian is ___ the west of Taiwan?A. toB. inC. onD. for22. ___ new bridge has been built over ____ Huangpu River.A. The; aB. A; /C. A; theD. An; an23. Please turn to ____. Let’s read the text aloud.A. Page TwoB. the page twoC. second pageD. page second24. As we know, the Changjiang River is one of ___ rivers in the world.A. longB. longerC. longestD. the longest25. At the sports meeting, Simon jumped as ____ as Daniel.A. highB. higherC. slowD. slower26. –Peter looks sporty. –Yes. He is the ____ runner in my class.A. slowerB. slowestC. fasterD. fastest27. –Which of those radios sounds ____? --The smallest one.A. goodB. wellC. betterD. best28. I find this computer game ___ to play.A. enough easyB. easy enoughC. enough easilyD. easily enough29. --____will the foreign students be back from Qufu? --In about half an hour, I think.A. How farB. How longC. How soonD. How often30. --____ is your home form here, Jane? --About five minutes’ walk.A. How oftenB. How longC. How farD. How soon31. –What’s the main cause of the accident? --Driving ____.A. carefullyB. carfulC. carelessD. carelessly32. –Mon, I think I’m ___ to get back to school.–Not really, my dear. You’d better stay at home for another day or two.A. so wellB. so goodC. well enoughD. good enough33. if you want to know the meaning of the word ____, you’d better look it up in the dictionary.A. mostlyB. exactlyC. nearlyD. hardly34. I have never seen her sister ____.A. agoB. beforeC. oftenD. sometimes35. Mr. LI says learning English ____ action, or we will get nothing.A. requiresB. reducesC. refusesD. realizes36. –How long have you ____ this book? --For three days.A. borrowedB. keptC. lentD. bought37. The Earth Buildings of Nanjiang are so fantastic that they ____ lots of tourists every year.A. attractB. allowC. attackD. attend38. Be polite. You ___ talk to the old like that.A. couldn’tB. needn’tC. mustn’tD. wouldn’t39. Her face ____ pale when she heard the bad news.A. gotB. isC. turnedD. was40. It often rains and the crops ____ fast.A. getB. turnC. growD. become41. The Young Pioneer ____ water for the old man every day.A. fetchesB. bringsC. takesD. carries.42. Don’t worry. We are sure your son ____ better soon.A. feelsB. will feelC. feltD. have felt43. The car ____ a tree and stopped.A. hitsB. has hitC. hitD. had hit44. We’ll go to help Uncle Wang pick apples if we ___ free next Sunday.A. areB. wereC. will beD. would be45. We ___ the good news just now.A. are hearingB. have heardC. hearD. heard46. –When ____ you ____ for Beijing? --This evening.A. do; leaveB. are; leavingC. did; leaveD. were; leaving47. There ___ two meetings in our school next month.A. is going to beB. are going to beC. is going to haveD. are going to have48. Autumn is a busy season. The day ____ shorter.A. getB. getsC. gotD. gets to49. Sorry. I ___ to help you at ten. I was busy at the moment.A. won’t comeB. can’t comeC. didn’t comeD. shouldn’t come50. The singer said, “ Thank you very much. Now I ____ another song for you.”A. will singB. am able to singC. singD. would sing51. –What ___ a farmer____? --A farmer ___ rice, fruit, flowers and so on.A. does; do; growsB. do; do; is growingC. is; doing; growingD. is; doing; grows52. It only ___ 7 hours to go to Nanjing by train now.A. is takingB. are going to takeC. takesD. has taken53. The summer vacation will begin next week. David _____ to stay with us.A. will be comingB. comesC. cameD. is coming54. She ____ to sleep, but she was never able to sleep well.A. comesB. fallsC. triedD. missing55. –What’s the girl crying for? --She ____ her finger.A. to cutB. cutC. will cutD. is cutting56. Don’t work hour after hour, or you ____ tired.A. areB. will beC. have beenD. would be57. I’m sorry, I ____ notice you. When ___ you come?A. don’t; willB. don’t; didC. didn’t; didD. don’t; do58. –How long ____ the film Spiderman Three ____? --Just for several minutes.A. did; beginB. has; begunC. has; been onD. does; begin59. The old man said he ____ some medicine this afternoon.A. buysB. will buyC. would buyD. has bought60. I ____ a meal when you ___ me.A. cooked; were ringingB. was cooking; rangC. was cooking; were ringingD. cooked; rang61. They ____ a football game from 7:00 to 9:30 last night.A .were watching B. watch C. watched D. are watching62. Mr Green and his family ____ China for four years.A. have been toB. have come toC. have gone toD. have been in63. He ___ this pen for 5 years. He ____ it in 2004.A. has bought; boughtB. bought; boughtC. has kept; has boughtD. has had; bought64. Frank said he ____ supper with his parents. He was quite full.A. had hadB. was havingC. hadD. has eaten65. It ___ 3 years since his grandma ____.A. is; diedB. is; has diedC. was; diedD. is; has been dead66. They told us that they_____ three hundred trees by the time the workers got there.A. have plantedB. plantedC. had plantedD. were planting67. Our English teacher said that we ____ an English exam the next week.A. will haveB. would haveC. hadD. are having68. –Do you know the Frenchman ? --Yes, I ___ him for two years.A. knowB. have knownC. knewD. have been known69. I ____ all my homework today. May I go to see the movie, Mom?A. finishB. will finishC. finishedD. have finished70. Mr Wang ____ back yet.A. has not comeB. had not comeC. is not comingD. was not coming71. When I saw his smiling face, I knew he ___ good news of his parents.A. has hadB. had hadC. was havingD. has72. Up to now, everything ___ well.A. is goneB. has goneC. goD. will go73. –The tall building looks so wonderful. –yes, it is the newest building here. It ___ last year.A. buildB. builtC. is builtD. was built74. The People’s Republic of China ____ on October 1,1949.A. foundB. was foundedC. is foundedD. was found75. –I’d like to buy that coat. –I’m sorry ____.A. it sold outB. it’s selling outC. it’s been sold outD. it had been sold out76. The key ___ on the table when I leave.A. was leftB. will be leftC. is leftD. has been left77. Now these magazines ___ in the library for a long time.A. have keptB. are keepingC. have been keepingD. have been kept78. The river smells terrible. People must ___ dirty things into it.A. be stopped to throwB. be stopped from throwingC. stop to throwD. have stopped throwing79. Old people must be looked after well and ___ politely.A. speak toB. spokenC. speakD. spoken to80. Newly-born babies ___ in hospital.A. are taken good careB. are taken good care ofC. take good care ofD. take good care81. The coat ___ her sister.A. made toB. were made forC. was made forD. was made to82. Great changes ___ in the past ten years in China.A. took placeB. have taken placeC. were taking placeD. had taken place83.What time ___ the door ___ every day?A. does; closedB. does; closeC. is; closedD. /; closed84. The house is not big enough___.A. to live inB. to be lived inC. to liveD. for live85. ____ a language requires time and effort, so we should work hard.A. LearnB. LearningC. LearnsD. Being learned。
初一有理数典型错题
初一有理数典型错题初一阶段的理数学科是数学学习的基础阶段,对于学生来说,掌握好理数的基本概念和运算规则非常重要。
下面是一些初一阶段常见的理数典型错题及解析:1. 错题,计算3 × (-4) = ?解析,在计算乘法时,正数乘以负数的结果是负数,所以 3 × (-4) 的结果是 -12。
2. 错题,求 -5 的绝对值是多少?解析,绝对值是表示一个数到原点的距离,所以 -5 的绝对值是 5。
3. 错题,判断 -2 是否为整数?解析,整数包括正整数、负整数和0,所以 -2 是一个整数。
4. 错题,计算 (-3) ÷ 2 = ?解析,在计算除法时,负数除以正数的结果是负数,所以(-3) ÷ 2 的结果是 -1.5。
5. 错题,判断 0 是否为自然数?解析,自然数是指从1开始的正整数,不包括0,所以 0 不是自然数。
6. 错题,计算 -2 + (-5) = ?解析,在计算加法时,负数加负数的结果是负数,所以 -2 + (-5) 的结果是 -7。
7. 错题,判断 -7 是否为有理数?解析,有理数是指可以表示为两个整数的比值的数,包括整数和分数,所以 -7 是一个有理数。
8. 错题,计算 2/3 + 1/4 = ?解析,计算分数的加法时,需要找到两个分数的公共分母,然后将分子相加。
所以 2/3 + 1/4 的结果是 11/12。
9. 错题,判断 1.5 是否为小数?解析,小数是指整数和分数之间的数,可以用有限位数或无限循环小数表示,所以 1.5 是一个小数。
10. 错题,计算 (-2) × (-3) = ?解析,在计算乘法时,负数乘以负数的结果是正数,所以(-2) × (-3) 的结果是 6。
以上是初一阶段常见的理数典型错题及解析,希望对你有帮助。
如果还有其他问题,请继续提问。
初中英语常见错题集与分析
初中英语常见错题集与分析.答案中考英语易错题77道一、名词、冠词1.– What can I do for you-- I’d like two _______.A. box of appleB. boxes of applesC. box of applesD. boxes of apple答案: B. 选择其它三项的同学要注意仔细看题.不要马虎, 这里box 和apple都是可数名词2.Help yourself to _________.A. some chickensB. a chickenC. some chickenD. any chicken答案: C 选择A的同学要注意chicken当鸡肉讲时不可数3..________ it is todayA. What fine weatherB. What a fine weatherC. How a fine weatherD. How fine a weather答案: A. 选择B的同学要注意weather不可数. 选择C和D的同学要注意weather是名词, 要用what来感叹.4.Which is the way to the __________A. shoe factoryB. shoes factoryC. shoe’s factoryD. shoes’ factory答案: A. 选择D的同学注意这里不是指名词所有格, 而是名词作形容词的用法.类似的用法如: pencil box; school bag等.5.This class ________ now. Miss Gao teaches them.A. are studyingB. is studyingC. be studyingD. studying答案: A. 选择B的同学要注意, 当这种概念名词当“人”讲的时候要做复数处理.类似的还有: the police are running after the thief等6.We will have a _________ holiday after the exam.A. two monthB. two-monthC. two month’sD. two-months答案: B 选择C的同学要注意应用two months’; 选择D的同学要注意名词之间有“—“后的组合词当作形容词来用, 因此就不用所有格形式了.7.________ trees are cut down in the forests every year.A. ThousandB. ThousandsC. Thousand ofD. Thousands of答案: D. 选择C的同学注意词组记忆的准确性8.Our sports meeting will be held ________.A. on 24, Tuesday, AprilB. in April 24, TuesdayC. on Tuesday, April 24D. in April Tuesday 24答案: C. 选B的同学是受到中文的影响,要特别注意中英文的差异9_________ people here are very friendly to us.A. TheB. /C. AD. An答案: A. 选择B的同学要注意这里的people是特指这里的, 因此要用定冠词the10..There is no enough ________ in the corner to put the table.A. placeB. roomC. floorD. ground答案:B 根据句意知道,这里表示没有地方放桌子;选A的同学要注意place 表示地点,是可数名词二、代词11.Some people like to stay at home, but ________ like to go to the cinema.A. anotherB. otherC. othersD. other one答案: C. 选择B的同学要牢记: some…., others….12.-- Is this your shoe-- Yes, but where is _________A. the other oneB. other oneC. another oneD. the others答案: A. 选择C的同学要注意鞋是两只, another指的是三者或者三者以上13.– When shall we meet again next week-- _______ day is possible. It’s no problem with me.A. EitherB. NeitherC. EveryD. Any答案: D. 选择C的同学要注意every指的是每一天都见面, any指的是任何一天都可以.注意中文的干扰14.Have you ever seen ________ big panda beforeA. a suchB. such aC. so aD. a so答案: B 选择A的同学要注意词组记忆的准确性15.-- _______ do you write to your parents-- Once a month.A. How longB. How soonC. How oftenD. How far答案: C. 选择A的同学要注意中文的干扰. 由回答知道这里指的是写信的频率, 用how often表示.16.Robert has gone to _________ city and he’ll be back in a week.A. otherB. the otherC. anotherD. any other答案:C 选择其它三项的同学要注意,这里没有说只有两座城市,因此不能用.17.– A latest magazine, please.-- Only one left. Would you like to have ________A. itB. oneC. thisD. that答案:A 选择B的同学要注意这里指的是上一句中提到的那本杂志,不能用表示泛指的不定代词one18.– Which book would you like to borrow-- ________ of the two books is OK with me.A. EitherB. BothC. AnyD. None答案:A 选择B的同学要注意is 表示单数.19.He knows _________ English ________ French. But he’s very good atJapanese.A. either; orB. both; andC. neither; norD. either; nor答案:C 选择A和B的同学要注意语境.20.– What do your parents do-- One is a teacher; _________ is a driver.A. otherB. anotherC. the otherD. that one答案: C 选择其它三个选项的同学要注意, one is …, the other is …的用法21.Mrs. Lee teaches ________ math. We all like her.A. weB. usC. ourD. ours答案: B 选择C的同学要注意, teach +人+科目, 而不能用teach +某人的+ 科目22.There are many trees on ________ side of the street.A. eitherB. anyC. allD. both答案:A 选择D的同学要注意side为单数;选择B的同学要注意:街道只有两边,因此不能用any23.________ is the population of the cityA. How manyB. WhatC. How many peopleD. How much答案:B 在问到人口是多少时,其实是在说“人口数是什么”,因此不能用A,要注意排除中文的干扰;三、介词、连词24.Japan is ________ the east of China.A. inB. toC. onD. at答案: B in 表示在范围里的, on表示紧挨着的; to 表示在范围以外的25.The postman shouted, “ Mr Green, here is a letter ________ you.”A. toB. fromC. forD. of答案: C 选择A的同学要注意to 表示动作的方向, for表示有从属关系或者利益关系26.We can’t do it ________ your help.A. withB. ofC. underD. without答案: D. 选择C的同学要注意中文的干扰, 借助某人的帮助要用with,反之用without27.He hasn’t heard from his friend __________ last month.A. sinceB. by the end ofC. forD. until答案: A 选择B的同学要注意B选项为过去完成时的时间;选择C的同学要注意, for+时间段; 选择D的同学要注意不是not…until 句型.until + 句子28.I didn’t buy the dictionary yesterday _________ my aunt would give meone.A. untilB. becauseC. ifD. before答案: B 选择A的同学要注意语境29.I’m going to look for another job ________ the company offers me more money.A. afterB. unlessC. whenD. for答案: B 选择其它三项的同学要注意语境, 这里是指除非公司给我更多工资,否则我就要找其它工作.30.Don’t hurry. The bus won’t start ________ everybody gets on.A. sinceB. asC. untilD. when答案: C 选择D的同学要注意前面是否定.31.Please show me _________ to send an e-mail, John. It’s the first timefor me to do it.A. howB. whatC. whenD. where答案:A 选择C的同学要注意认真看题,这里的time不是时间,而是指第一次32.You’ve passed the exam. I’m happy ______ you.A. onB. atC. inD. for答案:D 选择A的同学要注意记忆词组的准确性.33.I wonder ________ they finished so many different jobs in such a short time.A. whyB. howC. whenD. where答案:B 选择A的同学要注意语境,这里指他们怎么能在如此短的时间里完成如此多的困难的工作.34.-- Do you speak English-- Yes, I speak _________ a little English _______ some French.A. neither, notB. both, orC. either, orD. not only, but also答案:D 选择C的同学要注意语境.35.______ the maths problem is difficult, I’ll try very hard to work it out.A. ThoughB. WhenC. BeforeD. After答案:A 选择B的同学要注意语境.不能说当题目难的时候,我将努力.而是说尽管题目难,但我将努力解决.36.The accident took place ________ a cold February evening.A. onB. inC. atD. for答案:A 选择B的同学要注意,在特指的早上、下午、晚上,不用in要用on37.He turned ________ the radio because his father was asleep.A. onB. downC. upD. over答案:B 根据语境:他爸爸睡着了,因此不能用A-打开,也不能用C-调大.D 表示反过来38.I don’t know the homework _______ today.A. onB. inC. ofD. for答案:D 选择C的同学要注意of表示从属关系,要注意中文的干扰.39.– Oh, it’s raining heavily.-- Please don’t leave ________ it stops.A. whenB. afterC. sinceD. until答案: D 选择其它选项的同学要注意读懂句子, 只有把语境搞清楚才能答对问题.40.Jane said she would come here ________ 9:00 and 9:30 tomorrow morning.A. fromB. atC. betweenD. around答案: C 选择B的同学没有把体看完整; 选择A的同学没有注意到from…to…的搭配.四、动词41.My father went to Shanghai yesterday. He ______ back in two weeks.A. comesB. has comeC. will comeD. came答案: C 选择D的同学要注意in +时间段, 表示在未来的一段时间,应用将来时42..It’s spring now. The students ________ trees these weeks.A. plantB. are plantingC. will plantD. planted答案: B 选择A的同学要注意 these weeks 并不表示经常做某事,而是强调这几个星期同学们一直在种树.43..-- __________ you ________ your book to the library-- Yes. I returned it yesterday.A. Did, returnB. Have, returnedC. Will, returnD. Do, return答案: B 选择A的同学过分注意回答用了一般过去时, 但在上一句中, 并没有给出过去的时间,强调你现在是否还书了, 应用现在完成时.44.– Must I finish it now-- No, you ________.A. mustn’tB. needn’tC. can’tD. shouldn’t答案: B 选择A的同学要注意mustn’t意思指不允许, needn’t指的是不必要.45..Though it’s cloudy now, it _________ get sunny later.A. canB. mayC. mustD. need答案: B 选C的同学要注意语境, 这里强调过些时候也许会晴天, 表示推测性.46.It is in the library, you _______ talk loudly.A. may notB. can’tC. needn’tD. mustn’t答案: D 选择B的同学要注意中文的干扰.can’t表示不能够;47..If anyone wants to say something in class, you ________ put up your hands first.A. mustB. mayC. shouldD. can答案: A 选其他三个选项的同学要注意语境,anyone暗示出语气;表明是一个规定,而不是建议;48.– I called you last night but no one answered the phone.-- I ________ dinner with my friends in the restaurant.A. haveB. hadC. was havingD. have had答案:C 选择B和D的同学要注意分析语境.这里指我当时正在和朋友在饭馆吃饭.49..If you have lost a library book, you have to _________ it.A. find outB. look afterC. pay forD. take care答案:C 选择A的同学要注意语境50..He will call me as soon as he _________ the city.A. reachesB. reachedC. will reachD. is reaching答案:A 选择B的同学要注意主将从先51.The pen _________ him ten yuan.A. paidB. costC. tookD. spent答案:B 选择C的同学要注意took通常用在时间上;选择A和D的同学要注意,这里的主语是物品,因此不能用paid 和spent52..The train _________ for twenty minutes.A. leftB. has leftC. is leavingD. has been away答案:D 选择B的同学要注意,当用完成时表示持续动作时,要选择可持续动词,不要用瞬间动词.53..– How many books _____ they ________-- Five. But they haven’t finished reading even one.A. did…borrowB. had…borrowedC. will…borrowD. do…borrow答案:A 选择B的同学要注意,这里只是问过去发生的一件事,并不是过去时间之前发生的.54.He _________ his bike so he has to walk there.A. lostB. has lostC. had lostD. loses答案:B 选择A的同学注意句子并没出现两个时间点,因此要注意时态的前后一致.55.– Why did the policeman stop us-- He told us not _______ so fast in this street.A. driveB. drivingC. to driveD. drove答案:C 这里考查的是tell sb. not to do sth.五、形容词、副词56.The population of the world in 20th century became very much_________than that in 19th.A. biggerB. largerC. greaterD. more答案: B.选择其它三项的同学要注意population的固定搭配是large57.Miss Li is one of _______ in our school.A. a popular teacherB. more popular teacherC. most popular teacherD. the most popular teachers答案:D.选择其它三项的同学要注意one of + 复数的用法.58.The magazines are ________ easy that the children can read them well.A. suchB. soC. tooD. very答案: B 选择A的同学要注意easy是形容词,要用so…that, 而不用such…that59.– Would you like ________ more tea-- Thank you. I’ve had ________.A. any, muchB. some, enoughC. some, muchD. any, enough答案:C 选择B的同学要注意enough是形容词, 不能说had enough60.I think basketball is _______. I like to watch it.A. boringB. boredC. excitingD. excited答案:C 选择D的同学要注意basketball本身很令人激动,excited表示被什么所感染而激动;61.This dinner looks _______ to me, and I like it.A. terribleB. goodC. badlyD. nicely答案:B 选择D的同学要注意look在这里是系动词,后面要加形容词;62.The math problem is so hard that ________ students can work it out.A. a fewB. a littleC. manyD. few答案:D 选择A、C的同学要注意语境,这里指没有什么学生能做出来;63.– What’s the weather like tomorrow-- The radio says it is going to be even ______.A. badB. worstC. badlyD. worse答案:D 选择A的同学要注意,even+比较级64.Though she talks ______, she has made ________ friends here.A. a little, a fewB. little, fewC. little, a fewD. few, a few答案:C 选择A的同学要注意语境,这里指虽然她不怎么说话,但她有一些朋友.65.He never does his work _______ Mary.A. as careful asB. so careful asC. as carefully asD. carefully as答案:C 选择A和B的同学要注意work 是行为动词,要用副词来修饰.六、句法66..If it ________ tomorrow we’ll go to the park.A. will not rainB. doesn’t rainC. is not rainingD. didn’t rain答案: B 选择A的同学要注意if引导的条件状语从句主句用将来时, 从句用一般现在时.67.The radio says the snow ______ late in the day.A. stopsB. will stopC. has stoppedD. stopped答案: B. 选择A的同学要注意语境, late in the day表示“晚些时候”, 要用将来时68.The nurse told the children the sun ______ in the east.A. risesB. roseC. will riseD. has risen答案: A 选择B的同学要注意, 虽然主句中用了told, 但太阳从东方升起是真理性事实, 应用一般现在时表示.69.– Are you sure you have toIt’s been very late.-- I don’t know ______ I can do it if not now.A. whereB. whyC. whenD. how答案: C 选择D的同学要注意语境, 根据语境知道这里强调的是必须先在做,否则就没有时间了70.- Could you tell me _______ she is looking for-- Her cousin, Susan.A. thatB. whoseC. whomD. which答案: C 选择其它三项的同学要注意语境,这里是指找Susan这个人71.– When are the Shutes leaving for New York-- Pardon-- I asked ___________.A.when are the Shutes leaving for New YorkB.when the Shutes are leaving for New YorkC.when were the Shutes leaving for New YorkD.when the Shutes were leaving for New York答案: D 选择B的同学注意到了宾语从句的语序,但同时要注意时态要用相应的过去时.72.Would you please tell me ________ next, Mr WangA. what should we doB. we should do whatC. what we should doD. should do what答案: C 选择A的同学要注意宾语从句的语序为陈述语序.73.Mr. King didn’t know _______ yesterday evening.A. when does his son come backB. when his son comes backC. when did his son come homeD. when his son came home答案: D 选择C的同学要注意考虑宾语从句的陈述语序74.Alice has gone to the classroom and she didn’t say ________.A. when did she come back C. when would she be backC. when she came backD. when she would be back答案:D 选择C的同学要注意语境,这里要用过去将来时.75..– I’m sorry I broke your coffee cup.-- Oh, really _________.A. It doesn’t matterB. I don’t knowC. it’s OK with meD. You’re welcome答案:A 选择C和D的同学要注意中文的干扰.D是用来回答别人的致谢的.76.– Would you mind calling me back tomorrow again-- _________.A. Not at allB. You’re welcomeC. You’re rightD. Nice to meet you答案:A 同62题77.He hardly had anything to eat, ________ heA. didn’tB. hadn’tC. hadD. did答案:D 选择A的同学要注意hardly表示否定;选择B和C的同学要注意,反意疑问句要用助动词.。
数学小报错题收集
好的,以下是一些常见的数学小报错题:
1.计算错误:在计算过程中,学生可能会犯一些简单的计算错误,例如加法、
减法或乘法运算错误。
2.单位换算错误:学生可能不熟悉单位换算,导致在解题时出现错误。
3.代数错误:学生在代数表达式中可能会犯错误,例如变量代入错误或符号错
误。
4.几何错误:学生在几何图形中可能会犯错误,例如角度、边长或面积计算错
误。
5.逻辑推理错误:学生在逻辑推理中可能会犯错误,例如因果关系错误或推理
过程不严密。
6.概念理解错误:学生对数学概念的理解可能不准确,导致在解题时出现错误。
7.遗漏重要信息:学生在解题时可能会忽略重要信息,导致解题思路不完整或
解题结果不正确。
8.表达不清晰:学生在解题时可能无法清晰地表达自己的思路或答案,导致读
者无法理解。
9.格式错误:学生在书写答案或答题卡时可能会犯格式错误,例如小数点位置
错误或排版混乱。
10.时间管理不当:学生在考试时可能会因为时间管理不当而导致题目没有做完
或答题时间不够用。
(完整版)小学一年级常见错题
错题练习(1)1、16名同学站成一排,小明的左边有7人,小明的右边有多少人?□〇□〇□=□()2、小红有16支蜡笔,小明有8支。
小红送给小明()支后,两人的蜡笔就同样多。
3、如果□-9>5,□里最小填()。
如果12-□>5,□里最大填()。
4、用4根小棒能摆成1个正方形,用7根小棒能摆成2个正方形……像这样摆4个正方形要用()根小棒。
摆5个正方形要用()根小棒。
…5、一个一个地数,从八十五数到一百,一共数了()个数;五个五个地数,从八十五数到一百,一共数了()个数;两个两个地数,从八十数到一百,一共数了()个数。
6、①个位是0的两位数,最小是(),最大是();②十位是7的两位数,最小是(),最大是();7、21个小朋友排成一排,豆豆排在正中间的位置。
从左往右数,豆豆排第();从右往左数,豆豆排第()。
8、有一个两位数,十位上的数比4小,个位上的数比4大。
这个两位数最大是()。
9、个位上比十位上小3的两位数有()个,最大是(),最小是()。
10、一个两位数,个位上是比6大的偶数,十位上是比5大的奇数。
这个两位数最小是(),最大是()。
11、你们班有()个同学,如果让你和班上所有同学分别握1次手,你一共要握()次。
12、东东家养了一些鸭,其中一半在水里,剩下的鸭一半在树林里,一半在树林外。
树林外的鸭有10只。
东东家一共养了()只鸭。
13、□里最大能填几?□+60<74 □+65<70 25+□<45□+50<80 28+□<48 43+□<5014、一辆货车到停车场卸下8个货箱,有装上9个货箱,现在车上一共有39个货箱。
货车上原有()个货箱。
□〇□〇□=□()15、乐乐和天天的家在同一幢高楼上,乐乐家在天天家的下面一层,天天家上门还有13层,乐乐家下面还有10层。
这幢楼一共有()层。
16、图书角原有49本书,今天借出了5本,同学们有还回来7本。
现有的图书比原来多()本。
□〇□=□()17、十位上比个位上小4的两位数有()个,最大是(),最小是()。
小学生整理错题本范本
小学生整理错题本范本
错题本范本
错题本是小学生学习中非常重要的一个工具,可以帮助他们整理和复习自己的错误题目,提高学习效率。
下面是一个小学生整理错题本的范本。
第一部分:常见错误及解析
1. 错误类型:计算错误
题目:10 + 5 = 15
错误原因:计算时将10和5相加得到15。
解析:正确答案为10 + 5 = 15。
2. 错误类型:字母拼写错误
题目:正确拼写单词:爱心
错误原因:将爱心拼写为“爱先”。
解析:正确拼写为“爱心”。
3. 错误类型:答非所问
题目:小明有3个苹果,他还买了2个苹果,一共有几个苹果?
错误原因:将3和2相加得到5个苹果。
解析:小明共有3个苹果,买了2个苹果,一共有5个苹果。
第二部分:错题解析
题目一:计算错误
题目:3 + 4 = 8
错误原因:计算时将3和4相加得到8。
解析:正确答案为3 + 4 = 7。
题目二:字母拼写错误
题目:狮子
错误原因:将狮子拼写为“诗子”。
解析:正确拼写为“狮子”。
题目三:答非所问
题目:蜘蛛有几条腿?
错误原因:回答蜘蛛有四条腿。
解析:蜘蛛有八条腿。
第三部分:自我总结
通过整理这些错题,我发现自己在计算、拼写和理解题意方面经常出错。
我需要加强对这些知识点的学习和理解,避免再犯同样的错误。
总结:错题本是一个非常有用的工具,帮助我整理和复习自己的错误题目,提高学习效率。
通过不断地总结和复习,我相信我能够克服这些错误,取得更好的成绩。
运算律常错题
运算律常错题
运算律是数学中非常重要的一个概念,它指的是几个数进行运算的规律。
在运算律中,加法结合律、乘法结合律、交换律、分配律等都是非常常见的运算律。
然而,在解题过程中,学生们常常会犯错,特别是在运算律方面。
以下是一些常见的运算律错题:
1. 3 + 4 = 7 不是运算律的错误,而是运算顺序的错误。
在加法运算中,需要将两个数相加,得出的结果是 7。
2. 5 × 6 = 30 不是运算律的错误,而是乘法分配律的错误。
在乘法运算中,需要将一个数乘以另一个数,将得出的结果减去另一个数。
因此,5 × 6 = 30 是错误的。
3. 3 + 4 = 7 不是运算律的错误,而是运用运算律的错误。
在加法运算中,3 + 4 = 7 是错误的,因为 3 + 4 的和是 7,而不是 7 + 4。
4. 2 × 3 = 6 不是运算律的错误,而是交换律的错误。
在乘法运算中,两个数相乘,得出的结果是另一个数乘以另一个数。
因此,2 × 3 = 6 是错误的。
5. 9 + 1 = 10 不是运算律的错误,而是运用运算律的错误。
在加法运算中,9 + 1 = 10 是错误的,因为 9 + 1 的和是 10,而不是 10 + 9。
以上是一些常见的运算律错题,学生们在解题时需要仔细审题,正确运用运算律,避免犯错。
同时,在平时的学习中,学生们需要多练习,加深对运算律的理解,提高运算能力。
初中化学常见错题集(含解析)
初中化学错题集一、选择汇总例1.1 gH 2和10 gO 2在一密闭容器内混合点燃,充分反应后生成水的质量为( )A.1 gB.9 gC.11 gD.10 g[常见错误]由质量守恒定律知“参加化学反应的各种物质的质量总和与生成物的总质量相等”,1 g H 2和10 gO 2的质量总和为11 g ,选C 。
[错因分析]理解错误:充分反应与恰好完全反应混淆。
恰好完全反应是指各种反应物都正好用完,没有剩余;充分反应是指某一种物质已经反应完了,化学反应不能继续,而其他参与反应的物质还可能有剩余。
在化学反应中参加反应的各物质的质量要满足一个确定的质量比,并不是提供的各物质都一定能恰好完全反应,H 2与O 2反应时的质量比为1﹕8而不是1﹕10。
[教学对策]在一个化学反应中若有多种反应物,依据反应物的量求某种生成物的质量时,若提供多种反应物的数据而题目又没有说恰好完全反应时,此类题目往往有陷阱,可能有物质剩余,解题要小心。
解题时要根据化学方程式的量的意义,根据消耗完的物质的质量进行计算。
本题根据氢气燃烧的化学反应中的质量关系,1 gH 2只能和8 gO 2反应,而提供的10 gO 2并没有全部参加反应,还剩余2 gO 2,所以生成水的质量应该为9 g ,正确选项B 。
[变式练习]现有20 gH 2和O 2的混合气体在一密闭容器内引燃,充分反应后冷却至室温还有2 g 气体,则原混合气体中O 2 的质量是( )A.2 gB.16gC.18gD.16g 或18g答案D例2.经测定某物质中只含一种元素,该物质( )A.一定是纯净物B.一定是单质C.不可能是化合物D.不可能是纯净物[常见错误]单质是由一种元素组成的,一种元素组成的物质一定是单质,单质也一定是纯净物,选A 、B 或AB 。
[错因分析]记忆、理解错误:单质是由一种元素组成的纯净物,一种元素组成的物质不一定是纯净物,如:碳元素可以组成金刚石、石墨等多种物质,含一种元素的物质中可能有多种单质,它就属于混合物(即不是纯净物);化合物是由不同种元素组成的纯净物,化合物中一定含有多种元素,一种元素组成的物质不可能是化合物。
小学判断题常见错题
7 能化成有限小数 30
(
) ) )
2、面积相等的两个梯形,不一定可以平行四边形。 ( 3、因为 21÷2.1=10,所以 21 是 2.1 的倍数。 (
4、如果 x 是一个 自然数,那么比 x 小 1 的数,也一定是自然数。 ( 5、a÷b=6,那么 a 是 b 的倍数,b 是 a 的因数。 ( ) ) )
(温馨提示:老姐跟老妹侧面积相同,but 体积相同吗?) 59、跑步的速度一定,跑步的时间和跑的路程成反比例( 60、把 78 分解质因数是 78=2×39 ( ( ) ) ) ) )
61、整数的运算定律在小数、分数计算中仍然成立
62、 分数的分子和分母同时乘以或除以一个数, 分数大小不变 ( 63、 12÷3=1200÷300,这是运用了商不变的规律 (
11、圆是一个对称图形,半径所在的直线就是它的对称轴(
12、某粮食产区 2006 年的大豆产量比 2005 年增加了“二成五” ,也 就是说 2005 年的产量是 2006 年的 125% ( ) ) ) ) )
13、在同一个圆里,任意两条半径,都可以组成一条直线( 14、a、b 两个数的比是 3:2,则 a 比 b 大 50%。 (
)
46、一艘轮船从 A 地到 B 地顺水航行每小时 20 千米,返回时逆水 航行每小时 14 千米, 那么这艘船往返的平均速度是每小时 17 千米。 ( 47、比的前项和后项都不能为 0。 ) ( )
48、a、 b、 c 都是不为 0 的自然数, 若 (√) a× 49、甲数比乙数多 10%,乙数就比甲数少
30、分子和分母都是质数,这个分数就是最简分数。 ( 31、两个面积相等的三角形,一定能拼成平行四边形。
32、一个盒子里装有 5 个红球,5 个黄球。从盒子里任意摸出一个 球后再把球放回盒子中,每次摸到红球的可能性都是 10 次后,一定有 5 次摸到红球。 33、两个质数的和一定是合数。 ( ( 1 。这样摸了 2 ) ) )
初中英语常见错题120题
初中英语常见错题120题初中英语常见错题(提示: 前十个小题有两处错误,其它小题只有一处错误.)1. It takes us a hour or more to go to my hometown by a train.2. My friend Simon likes to play the football before the supper.3. What a bad weather we are having! We've never had so rainy days.4. These people want to have some fishes for supper, so they decide tocatch much now.5. Mrs. Li teaches our English. We like his class very much.6. The books are made from paper and these computers are made fromChina.7. The old man told his son that he had nothing to worry besides him.8. This kind of skirt looks well and sells good.9. Mr. Wu often gives us some good informations by e-mail.10. I can hardly see any sheeps on the top of the mountain.11. It is said that the police has found some clues that might lead to thearrest of the murderer.12. There are a lot of apples in the tree. A boy in the tree is pickingthem.13. There are thirty woman teachers in our school.14. The student with his friends are helping the old man dothehousework.15. The two-hours documentary takes a close look at the Asian tiger.16. Who do you think know the answer to the question17. Simon sits between Amy and I.18. Look! Some pieces of paper are on the floor. Let's pick it up.19. "Please help yourself to some fruit, children",Granny said.20. The weather here is quite different from the one of Chongqing.21. ----More and more people think that necessary to let the studentsteach themselves.22. ----That's true. They can improve themselves in this way.23. When night fell, I was too tired to do something else.24. Not every child like hamburgers.25. The Smiths have visited two famous cities. One is in Jiangsu andanother is in Zhejiang.26. Comrade Lei Feng thought more of the others than of himself.27. She has kept everyone of her son's letters.28. This maths problem is so difficult that only few students can work itout.29. Could you tell me how much your telephone number is30. ----How long is it from our school to the bridge31. ----About half an hour's bus ride. Shall we go and visit it32. He will stay here for one and a half month.33. Nanjing is a city with many places of interest, thousand of touristscome here every year.34. Two fifth of the land in that place is covered with trees and grass.35. The travellers set off in the morning of May 3.36. He lost the key of the door of his classroom.37. Ann has been late three times on the morning of last Monday.38. Would you like to help post this letter to me I have no time now.39. Amy thinks aliens may do harm for her.40. It is very important of us to practise speaking English as much aspossible.41. It is silly for you not to forgive others for their faults.42. By the end of last month we learned two thousand English words.43. Hangzhou is famous as producing silk in China.44. Each student will have their own online teacher is called 'e-teacher'.45. When Audrey Hepburn died, the whole world mourned(悼念) thelose of a great beauty.46. If you don't want to go hiking, I won't ,too.47. The sweater is very beautiful, but it's too much dear.48. The old man lives by himself, but he never feels alone.49. There're many trees and flowers on every side of the street.50. My home is about 5 kilometers far away from the city.51. Our teacher is going to fly to New York sometimes next year.52. The man speaks English as good as an American, so we all believethat he has stayed in America for many years.53. The more you think about his question, the more interested you willfeel it.54. -----Have you bought that digital camera55. ----No, I can't afford it. This price is a bit too expensive, I think.56. Our classroom must be kept cleaning every day.57. This pair of shoes is too small for me to wear it58. He ran very fast, but he couldn't run enough fast to catch the otherrunners.59. It's nothing serious. You've just caught a bit a cold.60. Guangzhou is larger than any other city in Guangxi.61. Bruce is shortest boy but runs fastest in his class.62. My hometown is becoming more beautiful and more beautiful.63. Of the two Australian students, Masha is the tallest one.I think youcan find her easily.64. When Mr. Jiang returned back home from work, his flat would be asclean as new.65. My grandpa took me some local products from my home town whenhe came to see me last year.66. Yesterday a number of people was waiting for a bus when theaccident happened.67. The geography teacher told us yesterday that the earth moved aroundthe sun.68. I want to know if he comes here if he is free tomorrow.69. In the past few years, they built a lot of new factories.70. ----How long has the film begun71. ----For about half an hour.72. Mr. Jiang can speak good English because he has been to Englandfor five years.73. My bike needs to mend. I think I need to go to Unlce Wang for help.74. Who do you think to help them finish the work on time last Thursday75. ----Why didn't you go to the movie yesterday76. ----Because I have watched it before.77. He asked her if she will go to Dangtu the next day.78. What was happened to your friends in the traffic accident79. ----Why don't you have a notebook with you80. ----I've forgotten it at home.81. I like this silk dress, and it is felt so soft and comfortable.、82. Old people should be spoken politely.83. ----Have all the students known that our class will have a meetingthis afternoon84. -----Yes. Every student tells about it by Mr Wang.85. Today, the forests have almost gone, people must stopfrom cuttingdown too many trees.86. The students are often made do a lot of homework a day.、87. ----What he said at the meeting listened quite all right.88. ----I can't quite agree with you.89. ----Would you mind if I open the window90. ----Yes, please, though it's a little cold.91. It takes about 12 hours traveling from Maanshan to Beijing by train.92. If you get up late, you will can't catch the early bus.93. You needn't to come to the meeting this afternoon if you havesomething important to do.94. The boys are often told don't play balls in the street.95. I pressed the keys but nothing was appeared on the screen.96. I prefer to walk there rather than going by bus.97. Camp in the open air is the most interesting of all the outdooractivities.98. The headmaster isn't in at the moment. He has been to an importantmeeting.99. The novels written by a famous writer are well worth to be readcarefully.100. There are many birds are singing in the trees over there.101. "Don't always make Tim to do this or that. He is already a big boy, dear," Mr. Green.102. Please pick it up. If you've lost it, you must pay it for.103. Both of my parents hope I to become a doctor when I grow up. 104. He spent as much time as he could play football on Sunday.105. Which does your father enjoy spending his weekend, watching TV or playing cards106. Something wrong is with my bike. I must have it to repair.107. My grandfather usually wears his glasses before he reads newspapers.108. He could say neither French nor German. So I talked with him in English.109. How much did he spend for the mobile phone110. I have to buy a robot in order that have more free time.111. He didn't know how to do with the used car.112. The question is if to go or stay.113. The baby is sleeping. You'd better to turn down the radio.114. ----Must I finish my homework now115. ----No, you mustn't. You may finish it tomorrow.116. There used to have few tall buildings around our town.117. Few of them hurt themselves in the accident last night, don't they 118. I don't think he will come here on time, won't he 119. He must be Mr. Green from the south of America, mustn't he120. -----There is no air or water on the moon, is there -----Yes, there isn't. 121. When we reached the train station yesterday, the train has been away for half an hour.。
英语常见错题解析
英语常见错题解析英语常见错题解析一、词汇错误1.一般过去时的动词变化错误误:Yesterday, I go to the park. 正:Yesterday, I went to the park。
解析:一般过去时的动词要根据主语的人称和数来变化,第一人称单数主语要用动词的过去式形式,即went。
2.名词单复数错误误:There is many cars on the street. 正:There are many cars on the street。
解析:名词cars是复数形式,因此谓语动词要用are。
3.形容词比较级错误误:He is more taller than me. 正:He is taller than me。
解析:形容词tall已经是比较级形式,不需要再加上more。
二、语法错误1.定冠词使用错误误:I want to buy a new iPhone. 正:I want to buy an new iPhone。
解析:以元音音素开头的单词前要用an。
2.情态动词使用错误误:I must to go home now. 正:I must go home now。
解析:情态动词must后面直接接动词原形,不需要加to。
3.直接引语和间接引语使用错误误:He said that he is tired. 正:He said that he was tired。
解析:直接引语是说话人的原话,间接引语是陈述他人的话,因此在间接引语中要将时态改为过去式。
三、句子结构错误1.主谓一致错误误:The dog barks at the cats. 正:The dog bark at the cats。
解析:主语dog是单数形式,因此谓语动词要用单数形式barks。
2.并列连词使用错误误:I like to swim and playing tennis. 正:I like to swim and play tennis。
初一上册数学经典错题
初一上册数学经典错题
“初一上册数学经典错题”的意思是指初中一年级上学期数学中的一些常见的、具有代表性的错误题目。
下面是一些“初一上册数学经典错题”示例:
1.计算题:3 × (7 - 4) = ?
学生常常在这里犯的错误是忽略了括号里的运算优先级,直接按照3 × 7 - 4来计算,而正确的计算方式应该是3 × 7 - 3 × 4。
2.应用题:小明有10个苹果,小华有5个苹果,小明的苹果是小华的几倍?
学生的错误解答可能是直接用10除以5,得出2。
而题目中的问题是“几倍”,应该用10除以5,然后表示为“2倍”。
3.选择题:以下哪个数不是正数?
A. 8
B. -6
C. 0
D. 10
学生的错误答案可能是选择了B选项,因为-6是负数。
但实际上,0既不是正数也不是负数,所以正确答案应该是C选项。
总结:初一上册数学经典错题指的是初中一年级上学期数学中一些常见的、具有代表性的错误题目。
这些题目通常涉及基本数学概念、运算顺序、问题解决等方面的误解或混淆。
通过练习和掌握这些经典错题,学生可以更好地理解数学概念,避免常见的错误,提高数学成绩。
常见的错题类型分析与应对方法
常见的错题类型分析与应对方法在学习中,错题是一件非常常见的事情。
一些学生在做题时经常遇到难以理解的问题,这让他们感到烦恼。
为了有针对性地解决这些问题,我将分享一些常见的错题类型,并教你如何针对性地解决它们。
第一类:概念错误这种错误的原因是没有理解或记住相关概念。
这种错误类型很容易发现,因为它们通常是不正确或荒唐的答案。
为了避免这种错误,做题前要对知识点做好笔记,或者向老师或同学提问。
第二类:计算/公式错误这种错误类型发生在需要计算或应用公式的题目中。
有时候,这种错误会出现在误解公式中,或者计算错误。
为了避免这种错误,做题前需要仔细阅读题目,将问题分解并识别需要使用的公式或计算方法。
在做题时也要注意准确性,避免计算出错。
第三类:理解错误这种错误类型发生在需要理解语言文字的题目中。
有时候,这种错误是因为把题目语言理解成了自己的理解,而不是题目本来的意思,或者因为题目难度比自己所学的内容高,导致理解困难。
为了避免这种错误,我们需要在阅读题目时仔细理解题目的含义,有时候也需要将问题分解成小部分,以便清楚地理解它们。
第四类:理解不透彻这种错误类型发生在需要透彻理解知识点的题目中。
有时候,这种错误是因为我们只了解了表面内容,而没有深入了解相关细节。
为了避免这种错误,我们需要仔细研究相关的概念,了解深入的细节和解决方法,巩固相关的知识。
第五类:粗心大意这种错误类型通常发生在我们一些不理解或不擅长的题目中,我们可能会因为粗心大意导致错题。
为了避免这种错误,我们需要仔细阅读题目,审题、看图,仔细理解问题。
在做题时,要注意细节,不放过任何一个步骤。
第六类:没有完整的答案这种错误类型通常发生在需要完整答案才行的题目中。
有时候,我们可能错过了一些必需的步骤或是遗漏了一些重要的细节,导致我们并没有给出完整的答案。
为了避免这种错误,我们需要付出更多的精力更细致地工作,做任何需要完整答案的练习时必须理解能力。
总结在我们的学习过程中,错题避免不了,也是因为这些错题,让我们能够更好的提高自己。
电学常见错题
电学一.选择题(共14小题)1如图所示电路,各元件完好,下列说法正确的是()A.若甲乙都是电压表,S1、S2都闭合,则R1和R2并联B.若甲乙都是电流表,S1闭合、S2断开,则R1和R2是串联C.若甲电流表,乙是电压表,S1闭合、S2断开,则甲表测R2电流D.若甲是电压表,乙是电流表,S1闭合S2断开,则甲表测电源电压2.在图所示的电路中,当开关S断开时,下列说法中正确的是()A.电源两端电压为零 B.电灯两端电压为零C.开关两端电压为零 D.以上说法都不正确4.如图所示,A、B是由同种材料做成的导体,A和B等长,但A比B的横截面积大.当S闭合后,在相同的时间内,下列叙述中正确的是()A.通过A、B的电流I A>I B,所做功的大小是W A>W BB.通过A、B的电流I A=I B,所做功的大小是W A<W BC.通过A、B的电流I A<I B,所做功的大小是W A=W BD.无法判断电流大小及电流通过A、B所做功的大小5.额定电压相同的甲、乙两灯串联在电路中时,甲灯比乙灯亮,那()A.甲灯的电阻比乙灯的电阻小B.通过甲灯的实际电流比通过乙灯的实际电流大C.甲灯的额定功率比乙灯额定功率大D.甲灯两端的实际电压比乙灯两端实际电压大6.如图所示,两个额定电压相同的灯泡L1和L2串联在电路中,闭合开关后发现L2不亮,L1亮,电压表有一定的示数,其原因是()A.L2的灯丝烧断B.L2的电阻小于L1的电阻C.L1的实际功率小于L2的实际功率D.L1的额定功率大于L2的额定功率7.如图所示电路,阻值为6Ω的电阻与一个“6V 3W”的小灯泡串联后接到9V的电路中,小灯泡恰能正常发光;如果在此电路中将“6V 3W”的小灯泡换成“6V4.5W”的小灯泡,那么该小灯泡的实际功率(设电源电压不变)()A.等于4.5W B.小于4.5W C.大于4.5W D.等于3W8.如图所示是电阻甲和乙的U﹣﹣I图象,下列说法中正确的是()A.电阻甲和乙都是阻值不变的电阻B.当乙两端电压为2V时,R乙=5ΩC.甲、乙并联在电路中,当电源电压为2V时,电路总功率为1.2WD.甲、乙串联在电路中,当电路电流为0.2A时,电源电压为3V9.例3一天晚上,小明家中的电灯突然熄灭,其他用电器也停止了工作,他检查电路发现保险丝并没有烧断,用测电笔测试室内各处电路时,氖管都发光,由电路故障可能是()A.进户零线断路 B.进户火线断路C.某用电器的插座短路D.某盏灯的灯丝断了10.随着社会的发展,轿车进入越来越多的家庭.轿车上大都装有一个指示灯,用来提醒驾驶员车门是否关好.只要有一个车门没关好(相当于一个电键断开),该指示灯就会发光.下图是某小组同学设计的模拟电路图,其中符合要求的是()A.B.C.D.11.图甲中的A、B分别为小灯泡和定值电阻的I﹣U图象,小灯泡和电阻的连接情况如图乙所示,电源电压8V,下列说法正确的是()A.小灯泡电阻随温度的增大而减小B.灯泡的实际电功率为0.6WC.电阻的阻值为0.05ΩD.电阻的电功率为0.8W12.在图的电路中,电源电压保持不变,R为定值电阻.闭合开关S后,将滑动变阻器的滑片P从最右端移到中间某个位置,电压表和电流表的示数分别变化了△U和△I.下列分析正确的是()A.变大 B.变小C.不变 D.先变小后变大13.如图所示电路,电源电压恒定,R1为定值电阻,R2为滑动变阻器.闭合开关S后,滑动变阻器滑片P自b向a移动的过程中()A.电流表A的示数变大,电压表V的示数变小B.电流表A的示数变大,电压表V的示数变大C.R1消耗的电功率变小D.电路消耗的总功率不变14.小明同学在“探究通过导体的电流与其两端电压的关系时,将记录的实验数据通过整理作出了如图所示的图象,根据图象,下列说法正确的是().A.当在导体乙的两端加上1V的电压时,通过导体乙的电流为0.2AB.将甲、乙两导体并联后接到电压为3V的电源上时,干路中的电流为0.9AC.将甲、乙两导体串联后接到电压为3V的电源上时,通过甲的电流大于乙的电流D.导体甲的电阻大于导体乙的电阻二.填空题(共6小题)16.图中两灯都能发光,甲为表,乙为表,在图中标明每个电表的正负接线柱.17.在如图1所示的电路中,当闭合开关后,两个电压表的指针偏转均为图2所示,则电阻R1和R2两端的电压分别为和.18.小华家中的电能表表盘如图所示,则小华家已消耗的电能为kW•h,他家消耗的这些电能可供一盏“220V 60W”的白炽灯连续工作h.他只让某电水壶工作,发现在10分钟内电能表盘转过了600转,则该电水壶的实际功率为W.19.两个电路元件A和B中的电流与它们各自两端电压的关系如图所示.将A和B并联后接在电压恒为2.0V的电路两端,则元件A和B消耗的总电功率为.将A和B串联后接在电压恒为2.0V的电路两端,则元件A和B消耗的总电功率为20.如图甲所示电路中,R0为定值电阻,R1为滑动变阻器.图乙是该滑动变阻器消耗的电功率与电流关系的图象.则该滑动变阻器的最大值是Ω,电源电压是V.电压表与电流表的示数关系图像三.作图题21小明把台灯的插头插在如图甲所示的插座上,插座上有一个开关S1和一个指示灯L1(相当于电阻很大的灯泡).台灯开关和灯泡用S2、L2表示.当只闭合S2时,台灯不发光,当闭合S1时,指示灯发光,再闭合S2时,台灯发光;如果指示灯损坏,S1和S2都闭合,台灯也能发光.22市场上有一种电脑键盘清洁器,可以有效清除键盘间不易触及的灰尘.某品牌的该产品由照明灯泡L、吸尘用的电动机M、两个电键、连接线、外壳等组成.使用时,灯泡和电动机既可以独立工作,也可以同时工作.23.如图是某家庭的部分电路,请把灯泡、插座连接到电路之中,要求电路连接符合安全用电原则.计算题(共2小题)24.如图甲所示是某压力测力计的电路原理示意图,图中电源电压为6V(保持不变);定值电阻R0的规格是“520Ω0.01A”,起保护电路的作用;测力显示器是由电流表改装成的(电阻忽略不计),R是一种新型电子元件,其阻值R随压力F大小变化的关系如图乙所示.求:(1)R0允许消耗的最大功率是多少?(2)通过分析图乙,请直接写出电子元件的阻值R随压力F变化的关系式.(3)该测力计所能测量的最大压力是多少?(4)若要增大该测力计所能测量的最大压力,请写出一种改进方法.25.如图是一种老式电饭锅的筒化电路原理图,该锅的部分参数如表,煮饭时,温控开关S(2)发热板R1的阻值是多少?(3)保温时,发热板的发热功率是多少?(4)从能量利用率的角度计算说明这种电饭锅的不合理性.26.如图所示的电路中,电源电压恒定不变,灯泡L标有“6V 3W”,定值电阻R0的阻值为8Ω,滑动变阻器R的最大阻值为120Ω,电压表的量程为0~15V.当电压表的示数为8V 时,灯泡恰好正常发光,忽略温度变化对灯泡电阻的影响.求:(1)电源电压U(2)滑动变阻器连入电路的电阻值为25Ω时,灯泡消耗的实际功率(3)在不超过灯泡额定电压和电压表量程的情况下,滑动变阻器接入电路的电阻值的变化范围.27.CFXB型“220V 1100W”电饭煲的原理图如图所示,它有高温烧煮和焖饭、保温两挡,通过单刀双掷开关S进行调节,R0为电热丝.当开关S接高温烧煮挡时,电路的功率为1100W,当开关S接焖饭、保温挡时,电路的总功率为22W.(1)电饭煲在高温烧煮挡时,开关S应与哪个触点连接?(2)电热丝R0的阻值多大?(3)当电饭煲在正常焖饭、保温时电路中的电流多大?四.解答题(共8小题)28.如图所示,小明在进行“测量小灯泡电功率”的实验,他已连接了部分电路,已知电源电压为3V,小灯泡的额定电压为2.5V.(1)请用笔画线代替导线,将图示电路连接完整;(2)连接好电路后,闭合开关,移动滑动变阻器的滑片,发现小灯泡始终不亮,电流表有示数,电压表示数为零,则出现故障的原因可能是.(3)故障排除后,小明通过实验测得如下数据,分析数据可知灯泡的额定功率是W.(4)小明想通过实验来比较灯泡“实际电压是额定电压一半时的电功率P1”和“实际电流是额定电流一半时的电功率P2”的大小,但小明的同学没有通过实验也比较出了它们的大小,29.为了探究“电流做功与电压大小和电流大小的关系”,某同学特别设计了两个实验,已知两个烧瓶中装有质量相等的煤油,且R1>R2,图甲采用串联电路,在通电时间相同的情况下,探究电流做功跟电压大小的关系.(1)通电一段时间,通过观察两玻璃管内煤油上升的高度和,结果左边玻璃管内煤油上升的高度大,我们可以推测:在通电时间相同、通电电流相等的情况下,越大,电流做功越多.(2)该同学要继续探究在通电时间相同时,电流做功跟电流的大小之间的关系.他使用的器材如图乙所示,电阻丝、煤油与原来相同.请根据这个目标,用笔画线代替导线,将图乙的实物连接图补充完整.(3)小明认为实验次数太少,结论具有偶然性,但又不想增加新的器材,实验中可以采取的办法进行实验,测量多组不同数据.30如图甲是家用电吹风的工作原理图电吹风工作时可以吹出热风也可以吹出凉风.(l)要让电吹风工作时吹出热风,它的开关应置于题图甲中(选填“1”、‘2”或“3“)位置,此时电风扇与电热丝的连接方式是.(2)某次用该电吹风将头发吹干的过程中,电吹风的功率随时间的变化关系如图乙所示,则在该次吹干头发过程中电吹风消耗的总电能是J.(3)电热丝在工作时的电阻值是Ω.(保留一位小数)(4)使用几年后,发现电热丝变细,则其电阻变,它的实际功率将变.31在“测定小灯泡额定功率”的实验中,电源电压为6V,小灯泡和额定电压为3.8V.(1)小明在连接实验电路时还有导线未接上,如图甲所示,请用笔画线代替导线把图甲中的电路连接好(导线不得交叉).(2)在闭合开关前,滑动变阻器的滑片应该移到(A/B)端.(3)实验时,要使小灯泡正常发光,应移动滑动变阻器的滑片使电压表的示数为V,此时电流表的示数如图乙所示,其示数为A,那么小灯泡的额定功率是W.(4)小华为了得到比较准确的小灯泡额定功率,她用同一套器材做了三次实验(她将电压表调到3.8V,图丙是其中一次实验所调的电压表示数),获得三组数据,并进行了三数据处P=她测得功率有差异的主要原因是.②这样处理数据的方法是否正确?(正确/不正确),其理由是.32在“测小灯泡电功率”的实验中,实验室为每个小组提供的器材有:电压恒为5V的电源一个,电流表(0〜0.6A、0〜3A)、电压表(0〜3V、0〜15V)各一个,开关一个,标有“20Ω1A”的滑动变阻器一个,导线若干,额定电压为3.8V小灯泡一个.实验前电压表与电流表均已调零.第一小组的同学实验时按如图甲所示方式连接电路.(1)连接电路时,开关应(选填“闭合”或“断开”).(2)开关闭合前,应把滑动变阻器的滑片调到(选填“A”成“B”)端.(3)闭合开关,发现小灯泡不发光,电流表有示数,电压表无示数,则故障原因可能是.(4)排除故障后,调节滑片到某一位置时,灯恰好正常发光,此时电流表的示数如图乙,则通过小灯泡的电流为A,小灯泡的额定功率为W.(5)该小组的同学们经过多次实验,记录了多组电压与电流值,并绘出如图丙所示图象,通过分析图象,发现小灯泡灯丝电阻是变化的,这是由于.(6)第二小组的同学在实验中发现,本组的电压表0〜15V的量程已损坏,而0〜3V的量程可以使用.经过研究设计了如图丁所示电路,完成了小灯泡功率的测量.实验时,调节滑动变阻器的滑片,当电压表的示数为V时,小灯泡正常发光.(7)第二小组的同学在实验过程中,为保证电压不超量程,小灯泡不超额定值,滑动变阻器接入电路的阻值范围为.。
常见错题之直线运动
常见错题之直线运动1.物体做匀加速直线运动,已知加速度为2m/s 2,那么在任意1s 内( )A .物体的末速度一定等于初速度2倍B .物体的末速度一定比初速度大2m/sC .物体的末速度一定比前1s 内的末速度大2m/sD .物体的末速度一定比前1s 内的初速度大2m/s2.以10 m/s 的速度匀速行使的汽车,刹车后做匀减速直线运动,加速度大小为3m/s 2 ,则汽车刹车后第4秒末的速度大小为( )A .2.5m/sB .2m/sC .0D .3m/s同类扩展:①汽车以20 m/s 的速度做匀速直线运动,刹车后的加速度为5 m/s 2,那么开始刹车后2 s 与开始刹车后6 s 汽车通过的位移之比为( )A .1∶4 B.3∶5 C.3∶4 D.5∶9②飞机着陆后以6m/s 2大小的加速度做匀减速直线运动,其着陆速度为60m/s ,求:(1)它着陆后12s 内滑行的位移x(2)整个减速过程的平均速度(用两种方法求)(3)静止前4s 内飞机滑行的位移x’3. 一物体自楼顶平台上自由下落h1时,在平台下面h2处的窗口也有一物体自由下落,如果两物体同时到达地面,则楼高为( )A. h1+h2B. C. D.同类扩展:①一质点由A 点出发沿直线AB 运动,行程的第一部分是加速度为a1的匀加速运动,接着做加速度为a2的匀减速直线运动,抵达B 点时恰好静止,如果AB 的总长度为S ,试求质点走完AB 全程所用的时间t ?4. 一物体从静止开始做匀加速直线运动,加速度大小为a ,当速度为v 时,将加速度反向,为使该物体在相同时间内回到原出发点,则反向后的加速度应为多大?回到原点时的速度为多大?5. 一物体由斜面顶端由静止开始匀加速下滑,最初的3秒内的位移为S1,最后3秒内的位移为S2,若S2-S1=6m, S1:S2=3:7,求斜面的长度为多少?6. 有些航空母舰上装有帮助飞机起飞的弹射系统,已知某型号的战斗机在跑道上加速时可能产生的最大加速度为5.0m/s 2,当飞机的速度达到50m/s 时才能离开航空母舰起飞。
七年级有理数乘除法经典错题
一、由“符号不清”导致出错常见错误:(1)该加(绝对值)弄成减,该减(绝对值)弄成加;(2)符号取错。
错误原因:加减(绝对值)不分。
数与数之间的+、-号既可以看成运算符号(加减号),也可以看成性质符号(正负号)。
但是,只能看成其中的一种符号。
如在-4-3中,如果把中间的“-”看成减号,那么就是减去正3,然后,根据减法法则:减去正3,等于加上正3的相反数-3.从而整道题就是负4加负3,属于同号相加。
如果把中间的“-”看成负号,那么3就是负数,然后,中间的加号省略了,自然就属于同号相加。
总结:同号则加,异号则减。
评析:由积的符号法则可知,几个不等于0的数相乘,当负因数有奇数个时,积为负;当负因数有偶数个时,积为正,上述解法错在符号上。
评析:错解将15前面的“―”号既视为运算符号,又视为性质符号,重复使用,以致出错,应二选其一。
(按照顺序,不要跨步; 先定符号,再定大小)二、对负分数不理解导致出错三、对乘方中的底数认识不清导致错误错解:原式=-8+3×(-6)-(-6)=-8+(-18)+6=-20评析:此解有三处错,都是把乘方运算当作底数与指数相乘,这是由不理解乘方的意义造成的。
如24=2×4=8是错误的.正解:原式=-16+3×1-(-8)=-16+3+8=-5注意理解-4²与(-4)²的区别:-4²表示4的平方的相反数,其结果为16;而(-4)²表示两个(-4)相乘,其结果为16。
四、违反运算顺序导致错误评析:有理数混合运算的顺序是↓↓↓先算乘方,再算乘除,最后算加减;如果有括号,先算括号里面的;对同一级运算,应从左至右进行。
五、含有小数、分数的混合运算+简便运算分析:仔细观察各个数,可以发现3.76和-4.76的小数部分是一样的,分为一组;三个分数易于通分,分为一组;剩下的两个整数可以一起计算.例11.计算1+(-2)+(-3)+4+5+(-6)+(-7)+8+…+97+(-98)+(-99)+100的值.难题分析:仔细观察这100个数的符号是按照+,-,-,+ 的规律循环,4个数为一个循环,一共100÷4=25组。
小学语文学科的错题分析与解决方法
小学语文学科的错题分析与解决方法语文作为一门重要的学科,对学生的综合能力培养和语言表达能力的提高起着至关重要的作用。
然而,在学习语文的过程中,学生往往会遇到各种各样的问题,特别是在做错题的时候。
为了解决这一问题,我们需要对小学语文学科的错题进行分析,并采取相应的解决方法。
一、常见的错题类型1. 词语理解类错题:这类错题主要是学生对词语的理解有误,导致对整句或整篇文章的理解出现偏差。
2. 词语拼写类错题:学生在词语拼写上出现错误,表现为字音字形错误、漏写、多写等。
3. 语句理解类错题:这类错题主要是学生对语句的理解出现了偏差,导致对文章的整体理解有误。
4. 语法错误类错题:学生在句子的结构和语法用法上出现错误,导致句子表达不准确或不通顺。
5. 故事逻辑类错题:学生在理解故事情节和人物关系上出现错误,导致对整个故事的理解有偏差。
二、解决错题的方法1. 细心阅读题目:学生在做语文题时,要认真仔细地阅读题目,理解题目要求。
特别是在阅读理解题中,要注意理解每个选项的意思,防止将干扰项误选。
2. 系统学习基础知识:学生在学习语文时,要坚持系统学习基础知识,巩固词语的理解和拼写,掌握基本的语法知识,注重阅读理解能力的培养。
3. 反思错误原因:学生在做错题后,要及时进行反思,分析错误的原因。
例如,是因为对词语的理解有误,还是对句子的结构理解有误等等。
4. 多做类似题目:学生在解决错题时,可以多做一些类似的题目进行练习。
通过多次练习,可以帮助学生加深对知识点的理解,提高解题的能力。
5. 寻求帮助和指导:如果学生对某个问题一直无法解决,可以向老师、同学或家长寻求帮助和指导。
及时解决问题,可以避免问题积聚导致学习困难。
6. 多读优秀作文和文章:学生在学习语文的过程中,可以多读一些优秀的作文和文章,通过模仿和学习,提高自己的语言表达能力和写作水平。
7. 提高阅读理解能力:语文学科的核心是阅读理解能力的培养。
学生可以通过多阅读各类文章,了解不同主题和文体的文章,提高自己的阅读理解能力。
六年级数学常见错题专项练习
六年级数学常见错题专项练习一、填空。
(每空1分,共29分) 姓名: 1、“美术组人数的57和绘画小组的人数相等”,是把( )看作单位“1”。
“九月份实际用电节约了110”,这里的110表示( )是( )的110,数量关系式是( )×110=( ). 2、六(2)班的女生人数是男生的25,那么男生人数是女生的( )( ),女生人数占全班的( )( )。
3、六年级人数的23与五年级人数的25相等,六年级人数占五年级人数的( )( )。
4、甲仓库存粮比乙仓库多14,那么乙仓库存粮比甲仓库少( )( ),乙仓库存粮与两仓库总数的比是( )。
5、已知A ×78=B ×87=C ÷89,且A 不为0,把A 、B 、C 三个数按从大到小的顺序排列起来( )。
6、一个块长方形铁皮,长40厘米,宽30厘米,从四个角上各剪去一个边长为6厘米的正方形,然后做成一个无盖的长方体盒子,这个盒子的体积是( )。
7、一个长方体玻璃缸,从里面量长40厘米,宽25厘米,缸内水深12厘米。
把一块石头浸没水中,水面升到16厘米。
石块的体积是( )。
8、一堆煤12吨,用去23,用去( )吨,还剩总数的( )( );一堆煤12吨,用去23吨,还剩( )吨。
9、把一个长10厘米,宽8厘米,高3厘米的长方体平均分成两个长方体,表面积最少增加( )平方厘米,最多增加( )平方厘米。
10、把一个正方体木块的表面全涂成红色,然后切成27个小正方体(如图),那么两面是红色的小正方体有( )个,一面是红色的小正方体有( )个。
11、已知○+○+○+○+□+□=56,○+○=□+□+□。
那么○=( ), □=( )。
12、1只猪的重量相当于3只狗的重量,1只狗的重量相当于4只猫的重量,( )只猫的重量相当于1只猪的重量。
13、甲乙两数的和是120,甲数是乙数的15,甲数是( ),乙数是( )。
14、一台拖拉机13小时耕地16公顷,1小时耕地( )公顷,耕地1公顷需要( )小时。
八上多项式除多项式典型错题
八上多项式除多项式典型错题在八年级的多项式除多项式的题目中,有一些典型的容易出错的题目。
以下是一些常见的错题及其解析:1. 错题,将多项式\(2x^3 + 3x^2 + 5x + 1\)除以\(x + 1\),求商式和余式。
解析,这道题的关键是要注意使用长除法来进行除法操作。
首先,将\(x + 1\)除式的第一项与被除式的第一项相除,得到商式的第一项为\(2x^2\)。
然后,将\(2x^2\)乘以\(x + 1\),得到\(2x^3 + 2x^2\)。
将这个结果与被除式相减,得到\(x^2 + 5x + 1\)。
接下来,将\(x + 1\)除式的第一项与新的被除式的第一项相除,得到商式的第二项为\(x\),然后继续进行上述的步骤。
最终,商式为\(2x^2 + x\),余式为1。
2. 错题,将多项式\(3x^3 + 2x^2 4x + 1\)除以\(x 2\),求商式和余式。
解析,这道题的关键是要注意使用长除法来进行除法操作。
首先,将\(x 2\)除式的第一项与被除式的第一项相除,得到商式的第一项为\(3x^2\)。
然后,将\(3x^2\)乘以\(x 2\),得到\(3x^36x^2\)。
将这个结果与被除式相减,得到\(8x^2 4x + 1\)。
接下来,将\(x 2\)除式的第一项与新的被除式的第一项相除,得到商式的第二项为\(8x\),然后继续进行上述的步骤。
最终,商式为\(3x^2 +8x\),余式为\(17x + 1\)。
3. 错题,将多项式\(x^4 2x^3 + 3x^2 4x + 5\)除以\(x +2\),求商式和余式。
解析,这道题的关键是要注意使用长除法来进行除法操作。
首先,将\(x + 2\)除式的第一项与被除式的第一项相除,得到商式的第一项为\(x^3\)。
然后,将\(x^3\)乘以\(x + 2\),得到\(x^4 +2x^3\)。
将这个结果与被除式相减,得到\(-4x^3 + 3x^2 4x + 5\)。
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11.下列哪一种疾病不属于泌尿外科:2-11 A.上尿路感染B.心脏肿瘤C.前列腺增生D.急性尿潴留答案: b75.下列哪一种疾病不属于内分泌科范畴:2-75 A.克山病B.垂体瘤C.糖尿病D.甲状腺炎答案: a105.下列哪一种疾病不属于胸外科:2-105 A.开放性气胸B.支气管扩张C.食管憩室D.甲状腺癌答案: b13.下列哪一种疾病不属于消化内科范畴:8-13 A.肠结核B.胰腺炎C.肝硬化D.浆细胞病答案: d57.下列哪一种疾病不属于呼吸内科范畴:8-57 A.结节病B.支气管炎C.克隆氏病D.肺原性心脏病答案: c102.下列哪一种疾病不属于心血管内科范畴:8-102A.结节病B.克山病C.雷诺综合征D.心律失常答案: a4.重症肌无力属于下列哪一种疾病:9-4A.神经本身病变的疾病B.肌肉本身病变的疾病C.神经-肌肉接头传递障碍性疾病D.遗传性疾病答案: c 20.下列哪一种疾病不属于血液内科范畴:9-20 A.白血病B.间质性肾炎C.血管性紫癜D.淋巴瘤答案: b39.下列哪一种疾病不属于心血管外科:9-39 A.房间隔缺损B.室间隔缺损C.心脏肿瘤D.雷诺综合征答案: d46.下列哪一种疾病不属于神经外科:9-46 A.颅脑损伤B.颅内出血C.糖尿病D.椎管内肿瘤答案: c93.下列哪一种疾病不属于普通外科:9-93 A.肠梗阻B.血胸C.甲状腺癌D.肠穿孔答案: b4.下列哪一种疾病不属于泌尿外科:10-4A.上尿路感染B.肺癌C.急性尿潴留D.前列腺增生答案: b83.下列哪一种疾病不属于骨科:10-83A.前列腺增生B.骨肿瘤C.类风湿性关节炎D.手外伤答案: a107.下列哪一种疾病不属于风湿免疫科:10-107 A.类风湿关节炎B.强直性脊柱炎C.支气管扩张D.系统性红斑狼疮答案: c17.近视眼可以用___矫正8-17A.圆柱镜B.接触镜C.凹镜D.凸镜答案: c118.远视眼可以用___矫正, 9-118A.圆柱镜B.接触镜C.凹镜D.凸镜答案: d42.甲型肝炎病毒(HAV)的主要传播途径是:9-42 A.经血传播B.经消化道传播C.经呼吸道传播D.性传播答案: b44.丙型肝炎病毒(HCV)的主要传播途径是:9-44 A.经血传播B.经消化道传播C.经呼吸道传播D.性传播答案: a37.下列哪种疾病不是通过水与食物传播方式进行传播的:7-37A.菌痢B.百日咳C.伤寒D.霍乱答案: b64.乙型脑炎通过下列哪种方式传播:7-64 A.空气飞沫传播B.水与食物传播C.虫媒传播D.直接接触传播答案: c68.下列哪种疾病不是通过空气飞沫传播方式进行传播的: 7-68A.猩红热B.乙型脑炎C.流脑D.流感答案: b 74.下列哪种疾病是通过水与食物传播方式进行传播的:7-74A.丝虫病B.百日咳C.疟疾D.霍乱答案: d92.流感通过下列哪种方式传播:7-92A.空气飞沫传播B.水与食物传播C.虫媒传播D.直接接触传播答案: a108.百日咳是通过下列哪种方式传播:7-108 A.直接接触传播B.间接接触传播C.虫媒传播D.空气飞沫传播答案: d10.下列哪些疾病是通过空气飞沫传播方式进行传播的:7-多选10A.乙型肝炎B.流感C.伤寒D.百日咳答案: bd21.下列哪些疾病是通过水与食物传播方式进行传播的:7-多选21A.甲型病毒性肝炎B.流脑C.伤寒D.霍乱答案: acd59.下列哪种疾病不是通过虫媒传播方式进行传播的:8-59A.霍乱B.乙型脑炎C.蚊传疟疾D.丝虫病答案: a83.血吸虫病通过下列哪种方式传播:8-83 A.直接接触传播B.间接接触传播C.虫媒传播D.水与食物传播答案: a14.下列哪些疾病是通过接触传播方式进行传播的:8-多选14A.皮肤炭疽B.血吸虫病C.伤寒D.狂犬病答案: abd17.下列哪些疾病是通过虫媒传播的方式进行传播:8-多选17A.丝虫病B.百日咳C.流脑D.乙型脑炎答案: ad42.甲型肝炎病毒(HAV)的主要传播途径是:9-42 A.经血传播B.经消化道传播C.经呼吸道传播D.性传播答案: b16.乙型肝炎病毒的传播途径有:1-16A.经输血和血制品传播B.经密切接触传播C.经消化道传播D.母婴垂直传播11.下列哪一种疾病不属于泌尿外科:2-11 A.上尿路感染B.心脏肿瘤C.前列腺增生D.急性尿潴留答案: b75.下列哪一种疾病不属于内分泌科范畴:2-75 A.克山病B.垂体瘤C.糖尿病D.甲状腺炎答案: a105.下列哪一种疾病不属于胸外科:2-105 A.开放性气胸B.支气管扩张C.食管憩室D.甲状腺癌答案: b13.下列哪一种疾病不属于消化内科范畴:8-13 A.肠结核B.胰腺炎C.肝硬化D.浆细胞病答案: d57.下列哪一种疾病不属于呼吸内科范畴:8-57 A.结节病B.支气管炎C.克隆氏病D.肺原性心脏病答案: c102.下列哪一种疾病不属于心血管内科范畴:8-102A.结节病B.克山病C.雷诺综合征D.心律失常答案: a20.下列哪一种疾病不属于血液内科范畴:9-20 A.白血病B.间质性肾炎C.血管性紫癜D.淋巴瘤答案: b39.下列哪一种疾病不属于心血管外科:9-39 A.房间隔缺损B.室间隔缺损C.心脏肿瘤D.雷诺综合征答案: d46.下列哪一种疾病不属于神经外科:9-46 A.颅脑损伤B.颅内出血C.糖尿病D.椎管内肿瘤答案: c93.下列哪一种疾病不属于普通外科:9-93 A.肠梗阻B.血胸C.甲状腺癌D.肠穿孔答案: b12.在中国化学制药工业发展过程中,贯彻“自力更生为主,引进外援为辅”方针的时期是:5-12A.改革开放以后B.本世纪以来C.一五计划D.九五计划答案: c44.半合成抗生素开始在中国生产是在:11-44A.改革开放以后B.本世纪初C.一五计划期间D.上世纪六、七十年代答案: d62.中国医药工业发展最快、最好的时期是:6-62A.建国初期B.改革开放以来C.第一个五年计划D. 1990 年以后答案: b89.医药工业成为国民经济中发展最快的行业之一的时期是:6-89A.第一个时期B.第二个时期C.第三个时期D.一五期间答案: c51.在中国,治疗心脑血管疾病和恶性肿瘤的药品成为发展重点是:13-51A.第一个五年计划B.第二个五年计划C.上世纪60 年代至70 年代末D.上世纪80 年代后答案: c3.银屑病是:2-3A.常染色体显性遗传病B.常染色体隐性遗传病C.多基因遗传病D.性连锁遗传病88.对银屑病临床分型描述错误的是:2-88 A.寻常型B.水疱型C.关节病型D.红病型答案: b15.哪一项不是银屑病的临床分型:8-15 A.寻常型B.脓疱型C.红病型D.混合型答案: d103.哪一项不符合寻常型银屑病的临床表现:8-103A.损害以头皮,四肢伸侧多见B.多急性发病C.初起为炎性红丘疹D.皮损形态单一答案: d40.对银屑病描述错误的是:3-40A.表面覆盖多层干燥的银白色鳞屑B.夏季加剧C.以头皮,四肢伸侧多见D.可出现点状出血答案: b57.下列哪项不符合寻常型银屑病的临床表现:3-57A.银白色鳞屑B.束状发C.甲板顶针状凹陷D.多数患者病情四季一致答案: d88.下列哪项不是寻常型银屑病皮疹的好发部位:3-88A.头皮B.四肢伸侧C.腰骶部D.面部答案: d102.哪项不符合寻常型银屑病的临床表现:3-102A.银白色鳞屑B.束状发C.甲板顶针状凹陷D.不易复发答案: d89.薄膜现象见于下列哪项疾病中:12-89 A.湿疹B.带状疱疹C.银屑病D.痤疮答案: c80.能与受体结合触发效应的是:13-80 A.受体B.第二信使C.激动药D.结合体答案: c97.能与受体结合不触发效应的是:13-97 A.拮抗药B.第二信使C.激动药D.结合体答案: a100.起放大分化和整合作用的是:13-100 A.受体B.第二信使C.激动药D.结合体答案: b112.能与配体结合不能触发效应的是:13-112A.受体B.第二信使C.激动药D.结合体答案: d120.能与配体结合触发效应的是:13-120 A.受体B.第二信使C.激动药D.结合体答案: a90.起后继信息传导系统作用的是:6-90 A.受体B.第二信使C.激动药D.结合体答案: b 3.下列哪项是口腔腔面被覆的上皮:1-3 A.单层扁平上皮B.复层扁平上皮C.单层柱状上皮D.复层柱状上皮答案: b61.食管粘膜属于下列哪种上皮:1-61 A.复层扁平上皮B.单层扁平上皮C. _________柱状上皮D.纤毛上皮答案: a10.宫颈上皮包括:2-10A.鳞状上皮B.纤毛上皮C.变移上皮D.单层高柱状上皮答案: ad18.下列属于单层扁平上皮的上皮组织有:4-18A.胃肠腔面B.表皮C.内皮D.间皮答案: cd13.下列上皮组织属于被覆上皮的是:5-13 A.单层扁平上皮B.复层柱状上皮C.复层扁平上皮D.变移上皮答案: abcd98.单层扁平上皮见于:10-98A.肾小管腔面B.表皮C.子宫腔面D.胸膜表面答案: d100.下列哪一项不是单层扁平上皮的特点:10-100A.由一层扁平细胞组成B.衬贴在心、血管和淋巴管腔面C.每个细胞呈立方形D.衬贴在心、血管和淋巴管腔面的单层扁平上皮称内皮答案: c23.衬贴在输尿管腔面的上皮组织是:11-23A.单层扁平上皮B.单层立方上皮C.单层柱状上皮D.变移上皮答案: d10.亲和力指数是指:6-10A. ED50B. LD50C. TID. pD2答案: d52.半数有效量是指:6-52A. ED50B. LD50C. TID. t1/2答案: a71.半衰期是指:6-71A. ED50B. LD50C. TID. t1/2答案: d76.治疗指数是指:6-76A. ED50B. LD50C. TID. t1/2答案: c85.拮抗参数是指:6-85A. ED50B. LD50C. pa2D. t1/2答案: c118.半数致死量是指:6-118A. ED50B. LD50C. TI D. t1/2答案: b17.可作为用药安全性的指标有:3-17 A. TD50/ED50B.极量C. ED95~TD5 之间的距离D. TC50/EC50答案: acd77.质反应中药物的ED50 是指药物:4-77 A.引起最大效能50%的剂量B.引起50%动物阳性效应的剂量C.和50%受体结合的剂量D.达到50%有效血浓度的剂量答案: b17.下列哪些免疫球蛋白属于抗体:1-17 A. IgGB. IgAC. IgED. IgM答案: abcd98.变应原进入体内后能引起哪类类抗体的产生:2-98A. IgGB. IgAC. IgMD. IgE答案: d104.目前血清中已发现的免疫球蛋白分子不包括:2-104A. IgAB. IgEC. IgDD. IgT答案: d118.喂母乳可以获得下列哪一种免疫球蛋白:3-118A. IgGB. IgAC. IgMD. IgE答案: b14.现在已知的免疫球蛋白中不包括:4-14 A. IgGB. IgFC. IgED. IgA答案: b13.下列哪些病毒的形态是球形的:2-13 A.狂犬病毒B.腺病毒C.脊髓灰质炎病毒D.疱疹病毒答案: bcd89.狂犬病病毒的形态是:4-89A.丝形B.弹形C.砖形D.球形答案: b120.脊髓灰质炎病毒的形态是:4-120 A.丝形B.弹形C.蝌蚪形D.球形答案: d。