(完整版)《大学英语1》单项选择题专项练习题

一、词汇与语法

1. John helped me write a letter ____ English. 用某种语言说/写/唱均使用介词in

A. with

B. of

C. in

D. by

2.____ your teacher like you? 第三人称单数的一般疑问句，使用助动词does

A. Do

B. Does

C. Are

D. Is

3. He will stop showing off, if no notice ____ of him. –被动语态

A. is taken

B. will be taken

C. takes

D. has taken

4.Mary ______ anything in the shop just now.-一般过去式

A. won't buy

B. didn't buy

C. didn't bought

D. don't buy

5. In order to strengthen his muscles, Mike goes to the gym _____ to do exercises.-辩词

A. increasingly

B. often

C. regularly

D. lively

6. No one can possibly recall any detail about the meeting．It is at least five years since it_. 通常情况下since引导的句子后面用一般过去式

A．had taken place B．was taken place

C．was taking place D．took place

7. _____ Sundays we stay at home.-在周一……周日，均使用介词On

A. With

B. At

C. In

D. On

8.You have worked out the plan and now we must put it into ___. –固定短语“用于实践”

A. fall

B. reality

C. practice

D. deed

9.Although I had read the book assigned by the professor several times, it didn't make any__ to me. –固定短语搭配make sense to somebody

A. meaning

B. importance

C. sense

D. significance

10. Years ago we didn’t know this, but recent scie nce ______ that people who don’t sleep well soon get ill. –recent 现在完成时的时间标志词语

A. showed

B. has shown

C. will show

D. is showing

1-5 C B A B C 6-10 D D C C B

11. The traffic in our city is already good and it ____ even better.

A. gets

B. got

C. has got

D. is getting

12. Our English teacher ____ our buying an English-Chinese dictionary.

A. suggested

B. wished

C. hoped

D. asked

13. His success ____ his hard work-result from 与result in 的区别

A. resulted

B. resulted in

C. resulted from

D. caused

14. They won't buy new clothes because they ____ money to buy a color TV set.

A. save

B. are saving

C. has saved

D. were saving

15. Drunken driving is often the major _____ of traffic accidents.

句子的含义：酒驾通常是交通事故的主要原因。

A. reason

B. cause

C. excuse

D. way

16. The case ______ a lot of things, ______ a second-hand watch.-contain与include的区别

A. contained; including

B. included; containing

C. included; contained

D. contained; included

17. It’s getting cold, Be careful_____ your health.–be careful with……

A. for

B. with

C. at

D. about

18. Li Fang is very busy, ____ she's always helping others with their lessons.

A. but

B. although

C. so

D. for

19. The good service at the hotel made up for the poor food to some ______.

A. way

B. grade

C. sort

D. extent

20. I've finally finished my paper and it ____ me an entire month.

A. takes

B. took

C. was taken

D. had taken

11-15 D A C B B 16-20 A B A D B

21. Good heavens! There you are! We ____ anxious about you, and we ____ you back throughout the night.

A. are; expect

B. were; had expected

C. have been; were expecting

D. are; were expecting

22. The volleyball match will be put off if it ____.

A. will rain

B. rains

C. rained

D. is raining

23. He asked who I voted for and I said it was my own _______.

A. thing

B. matter

C. duty

D. business

24. Excuse me, how can I get to the nearest ___ shop?

A. shoes

B. shoe

C. shoes’

D. shoe’s

25. Helen had to shout ________ above the sound of the music.

A. making herself hear

B. to make herself hear

C. making herself hear

D. to make herself heard

21-25 C B D B D

26. I can guess you were in a hurry. You ____ your sweater inside out.

A. had worn

B. wore

C. were wearing

D. are wearing

27. It’s believed that if a book is ____, it will surely ____ the reader.

A. interested; interest

B. interesting; be interested

C. interested; be interesting

D. interesting; interest

28. I ____ ping-pong quite well, but I haven't had time to play since the new year.

A. will play

B. have played

C. played

D. play

29.________ Hongkong is often regarded as ________ international centre for business, finance and tourism.

A. / ; an

B. An ; /

C. The ; /

D. / ; the

30. John and I ____ friends for eight years. We first got to know each other at a Christmas party. But we _______ each other a couple of times before that.

A. had been; have met

B. have been; have met

C. had been; had met

D. have been; had met

26-30 D D D A D

31. The Oscar is one of the film prizes ____ offered to any Chinese actor or actress so far.

A. which is not

B. that have not been

C. that has not

D. that has not been

32.Here’s my card, Let’s keep in ___.

A. touch

B. relation

C. connection

D. friendship

33.____ visitors to the UK were asked by newspaper reporters what their impressions of the British people were.

A. The number of

B. A number of

C. Numbers of

D. Any numbers of

34. His article concerning population control was published in the _____ issue of China Daily.

A. latest

B. lately

C. late

D. later

31-34 B A B A

二、英语应用，完成小对话

1. —Tom, this is Hack, Fred is ill in hospital. –fred住院了，这是一个坏消息。

— Oh, _________→听者应该表示抱歉。

A. it’s sad.

B. it’s bad.

C. I’m sorry to hear that.

D. that’s not good.

2. —I will come to attend your lecture at 10:00 tomorrow.-考察时态

—I'm sorry, by then my lecture will have ended and I ____ my guests in my office.

A. is being met

B. will meet

C. will be meeting

D. will have met

3. —Alice came back home the day before yesterday.

—Really? Where ____? 前天以前她去哪儿了？用过去完成时

A. has she been

B. had she been

C. has she gone

D. had she gone

4.—It is said that another new car factory ____ now.现在进行时的标志词

—Yeah. It _______ one and a half years.-正在建，说明将要花费一年半的时间

A. is building; takes

B. is being built; will take

C. is built; will take

D. is being built; takes

5. —What would you do if it ____ tomorrow?-在条件状语从句中，用一般现在时表将来

—We have to carry it on, since we’ve got everything ready.

A. rain

B. is raining

C. will rain

D. rains

6.—Jim, please don't put your head out of the window on the bus. It's dangerous!

—_____________________ 不要把头伸出公交车的窗外那很危险。

A. Good idea.

B. Sorry, I won't do it again.

C. It doesn't matter.

D. It's good.

7. As soon as he comes back, I’ll tell him when _______ and see him.

A. will you come

B. you will come

C. you come

D. do you come

8.－Do you prefer tea or coffee?

－_____________________

A. Milk.

B. Yes, I like tea.

C. Coffee, please.

D. None.

9.—Has Jack finished his homework yet?

—I have no idea; he ____ it this morning.

A. was doing

B. had been doing

C. has done

D. did

10. — Guess what? I passed the English exam!-通过了英语考试，这是个好消息

— ________________→听者应该表示“祝贺”

A. That’s fine.

B. It’s OK.

C. Congratulations!

D. Believe it or not.

1-5 C C B B D

6-10 B B C A C

11. Scientists think that the continents _______ always where they ________ today.

A. aren’t; are

B. aren’t; were

C. weren’t; are

D. weren’t; were

12. —Will you be able to come to my birthday party this Saturday?

—______________

A. No, I’d like to.

B.I believe I can’t.

C. I’m afraid.

D. Yes, I’d love to.

13. She won the first prize in the speech contest and ____ surprised us.

A. which

B. it

C. as

D. who

14. —Hello, may I talk to the director now?

— _________

A. Sorry, he is busy at the moment.

B. No, you can't.

C. Sorry, you can't.

D. I don't know.

15. －Must we hand in our homework now?

－——————.

A．Yes，you will B．Yes，you mustn’t

C．No，you needn’t D．No，you can’t

16. —Excuse me, could you please tell me how to get to the railway station?

—____________

A. No, I couldn’t.

B. Sorry, I don’t know. I’m new here.

C. I couldn’t tell you.

D. You can’t ask me.

17. —I don’t like the spot s programs on Sundays.

— ____________

A. So do I

B. Neither do I

C. So am I

D. Neither am I

18. -- May I help you, madam?

-- ______________.

A. Sorry, I have no idea

B. Yes, I know what to buy

C. You’d better give me a hand

D. Yes, I’d like 2 kilos of oranges

19. —Nice weather, isn’t it?

— _______________

A. I’m not sure

B. You know it well

C. Yes, it is

D. Yes, it isn’t

20. — Hello, could I speak to Don please?

— ___________?

A. Who are you

B. What’s the problem

C. Are you Jane

D. Who’s speaking

11-15 C D B A C

16-20 B B D C D

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3.I doubt _he is the murderer because he is not on the scene at that moment. A. why B. that C. whether D. when 答案：B 解析：在肯定句中，及物动词doubt后面也可接that引导的宾语从句，但表示疑虑或”不大相信’. 4.Bit by bit, a child makes the necessary changes to make his language _. A.as other people B.as other people’s C. like other people D. like other people’s 答案：D 解析：as 和like 都可以表示“像……一样”，但as是连词，后跟从句，like是介词，后跟名词或名词性短语。 5. There is a real possibility that these animals could be frightened, _a sudden loud noise. A. being there B. should there be C. there was D. there have been 答案:B 解析：该句是一个省略if的倒装的虚拟条件句，课还原为“if there should be…”,表示对将来的假设。

第五章思考题

第五章思考题 1．简述定态微扰论的基本思想。解答：量子力学体系的哈密顿算符∧H 不是时间的显函数时，通过求解定态薛定谔方程，讨论定态波函数。除少数特例外，定态薛定谔方程一般很难严格求解。求解定态薛定谔方程 ψψE H =∧时，若可以把不显函时间的∧H 分为大、小两部分∧ ∧∧'+=H H H )0( ||||)0(∧∧'>>H H ，其中 )0() 0() 0()0(n n n E H ψψ=∧，即∧)0(H 的本征值)0(n E 和本征函数 )0(n ψ是可以精确求解的，或已有确定的结果。满足上述条件的基础上，常引入一个很小参数λ（10<<λ），将微扰写成 ∧ 'H λ，以逐步近似的精神求解薛定谔方程。将能级和波函数以λ的幂级数展开 ???+++=+++= )2(2)1()0()2(2)1()0(n n n n n n n n E E E E ψλλψψψλλ ) 0(n E 与)0(n ψ称为零级近似能量和零级近似波函数，是未受微扰时∧)0(H 的本征能量和本征函数，也是我们求解微扰问题的必备基本条件，后面各项按λ的幂次称为一级修正、二级修正、…。 2．非简并定态微扰论的适用条件是什么？解答：非简并定态微扰论的适用条件为||||)0()0(m n m n E E H -<<'，一是要求微扰本身应很小，二是要求能级间隔||)0()0(m n E E -较大。 3．证明：非简并定态微扰中，基态能量的二级修正永为负值。

解答：能量的二级修正)0()0(2) 2(||m n nm m n E E H E -''=∑，若)0(n E 为基态能量，当然其数值为最小，因而在求和中n m ≠的任一项0)0()0(<-m n E E ，故)2(n E 永为负值。 4．简并态微扰与非简并态微扰的主要区别是什么？什么条件下，简并能级情况可用非简并态微扰处理？解答：简并态微扰与非简并态微扰的主要区别是零级近似能量给定后，对应的零级近似波函数一般说来是不能完全确定的。对于f 度简并能级,)0(k E 如选择的f 个独立的)0(αψk 已使H '对角化，即 αβαββαδψψH H k k '>='<)0()0(||，此时αααH E k '=)1(，对应的零级近似波函数为)0(αψk ，虽然能级)0(k E 是简并的，仍可用非简并定态微扰论处理一级近似问题。 5．量子跃迁问题与定态微扰在研究目标和处理方法上有何不同? 解答：定态微扰和量子跃迁是量子力学中两个不同类型的问题，在研究目标和处理方法上都不一样。定态微扰处理定态问题，考虑加入微扰后如何求出体系总哈密顿量的本征值和本征函数的修正项，其出发点是定态薛定谔方程。量子跃迁是考虑体系在微扰作用下，波函数随时间的变化问题，是依据含时薛定谔方程),(),(t x H t t x i ψψ=?? 具体计算量子态之间的跃迁几率问题。一般说来，这两类问题都需要运用近似方法求解。 6．非简并态微扰为什么不适用于所谓近简并情况？

初中英语单项选择题汇总题(附标准答案)

初中英语单项选择题汇总题(附答案)

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初中英语单项选择题汇总（附答案）第一部分初中中考英语单选题真题练习第一章冠词真题 1. —What would you like for afternoon tea? (09广州，16) —Tow pieces of bread and cup of coffee, please. A. an; a B. 不填; a C. at; the D. 不填; the 2. old man behind Mary is university teacher. (09广东省，29) A. An; an B. A; the C. The; a D. The; an 3. —How do you go to work? (09深圳，1) —I usually take bus. A. the; a B. /; a C. a; a D. the; / 4. After Lucy and Lily, Tony is now student to win the game in our class. (09佛山，23) A. the third B. a third C. the second 5. —Are you good at playing basketball or playing piano? (08深圳，21) —Both． A. a; a B. the; the C. the; / D. /; the 6. When you make a mistake, don't always make excuse for yourself. (08佛山， 29) A. an B. the C. / 7. —Do you like a blue bike for your birthday? (07佛山，31) —But I prefer green one. A. the B. / C. a 8. He is university student and he comes from island in England. (07广东省，26) A. an; an B. an; a C. a; an D. a; a 巩固练习 1.There's 800-metre-long road behind hospital. (09甘肃兰州) A. an; an B. a; a C. an; the D. a; the 2.I really like book you lent me yesterday. (09河北) A. a B. an C. the D. 不填 3.Jimmy bought car yesterday, but it’s used one. (09山东威海) A. a; a B. a; an C. a; the D. the; an 4.What exciting news it is! Is news true? (09山东烟台) A. an; the B. an; a C. /; the D. /; a 5.—I just have cup of milk for breakfast. (09四川成都) —That’s not enough. A. a; a B. the; the C. a; 不填 6.Sandy often takes her dog for walk around the lake after supper. (09江苏南京)

七年级下册英语单项选择精练50题

1.Can you please ______ it in English? A.speak B.say C.tell D.talk 2.He often talks about ________. A.Jack and she B.you and Jack C.Jack and you D.she and I 3.--Can you speak English? --Yes, but only _________. A.few B.a few C.little D.a little 4.Can you help _______ swimming? A.children to B.children C.kids for D.kids with 5.－May we play football in the street? －No, you _______. It’s very dangerous.(危险)。 A.can B.may C.may not D.mustn’t 6.Let’s go to school. It’s _____ 7 o’clock. A.at B.in C.about D.for 7.I go to _____ work after _____ breakfast every day. A./, the B./, / C.the, / D.the, the 8._____ you _____ your brother can join us. We need one of you. A.Both; and B.Just; and C.Either; or D.Not only; but also 9.______ starts at eight every day. A.School B.The school C.A school D.Schools 10.--Lucy, ______ your coat please. It’s time to go to school. -- I will. Thank you, mom. A.get dressed B.put on C.wear D.dress 11.He went to a country _____ a very cold morning. A.in B.at C.of D.on 12.The food on the table looks good, but it doesn’t _____ delicious. A.eat B.have C.smell D.taste 13.Can you tell me how old _________? A.is the boy B.the boy is C.are you D.are they 14.--How can I go to the supermarket, Paul? --______ a bus. It’s far from here. A.On B.By C.In https://www.360docs.net/doc/572578534.html,e 15.Connie ______ the small village _______ a snowy night. A.gets to; in B.gets to; on C.reach; at D.arrive; on 16.--How far is it from here to the hospital? --It’s about _______ ride. A.fifteen minute’s B.fifteen minutes C.fifteen minute’s D.fifteen-minutes 17.Li Hua lives far from our school. He has to ______ a river to school every day. A.across B.through https://www.360docs.net/doc/572578534.html,e D.cross 18.--_____ do you get to school? --_______ my parent’s car. A.How, In B.How, By C.How often, In D.How, With 19.Twenty minutes’ walk ______ far. A.aren’t B.can’t C.don’t D.isn’t 20.I want to know ________. A.where does he buy the book B.how far is the hospital C.who the man over there is D.how he goes to school 21.--How many people are there in this important meeting?

练习题答案(第5章)

第五章练习题答案 1.解：更新设备与继续使用旧设备的差量现金流量如下：（1）差量初始现金流量：旧设备每年折旧=（80000-4000）÷8=9500 旧设备账面价值=80000-9500×3=51500 新设备购置成本-100000 旧设备出售收入30000 旧设备出售税负节余（51500-30000）×25%=5375 差量初始现金流量-64625 （2）差量营业现金流量：差量营业收入=0 差量付现成本=6000-9000=-3000 差量折旧额=（100000-10000）÷5-9500=8500 差量营业现金流量=0-（-3000）×（1-25%）+8500×25%=4375 （3）差量终结现金流量：差量终结现金流量=10000-4000=6000 差量净现值=10375×PVIF10%,5+4375×PVIFA10%,4-64625 =10375×0.621+4375×3.170-64625 = - 44313.38（元）差量净现值为负，因此不应更新设备。 2.解：（1）现在开采的净现值：年营业收入=0.1×2000=200（万元）年折旧=80÷5=16（万元）年营业现金流量=200×（1-25%）-60×（1-25%）+16×25%=109（万元）现金流量计算表如下：净现值=119×PVIF20%,6+109×PVIFA20%,4×PVIF20%,1-10×PVIF20%,1-80 =119×0.335+109×2.589×0.833-10×0.833-80 =186.61（万元）（2）4年后开采的净现值：年营业收入=0.13×2000=260（万元）

第四章练习题

第四章练习题一、名词解释资本成本：又称资金成本，是企业为筹集和使用长期资金而付出的代价。边际资本成本：是指资金每增加一个单位而增加的成本。二、单项选择题 1. 某公司财务杠杆系数等于1，这表明该公司当期（）。 A利息与优先股股利为零 B利息为零，有无优先股股利不好确定 C利息与息税前利润为零 D利息与固定成本为零 2. 只要企业存在固定成本，则经营杠杆系数必（）。 A与销售量成正比 B与固定成本成反比 C恒大于1 D与风险成反比 3. 某公司全部资本为150万元，负债比率为40%，负债利率为10%，当销售额为130万元时，息税前利润为25万元，则该公司的财务杠杆系数为（）。 A1.32 B1.26 C1.5 D1.56 4. 不存在财务杠杆作用的筹资方式是（）。 A发行普通股 B发行优先股 C发行债券 D举借银行借款5. 每股利润变动率相对于息税前利润变动率的倍数，即为（）。 A经营杠杆系数 B财务杠杆系数 C综合杠杆系数 D边际资本成本6. 某公司的经营杠杆系数为2，预计息税前利润将增长10%，在其他条件不变的情况下，销售量将增长（）。 A20% B10% C15% D5% 7. 在计算资本成本时，与所得税有关的资金来源是下述情况中的（）。 A普通股 B优先股 C银行借款 D留存收益 8. 经营杠杆效应产生的原因是（）。 A不变的债务利息 B不变的产销量 C不变的固定成本 D不变的销售单价 9. 债券的资本成本率一般低于股票的资本成本率，其主要原因是（）。 A债券的筹资费用较少 B债券的发行量少 C债券的利息率固定 D债券利息在税前支付 10.每股利润变动率相对于销售额变动率的倍数，即为（）。 A经营杠杆系数 B财务杠杆系数 C综合杠杆系数 D边际资本成本三、多项选择题 1、下列项目中，属于资本成本中筹资费用内容的是（）。 A 借款手续费 B 债券发行费 C 债券利息 D 股利 2、财务杠杆效应产生的原因是（）。 A 不变的债务利息 B 不变的固定成本 C 不变的优先股股利 D 不变的销售单价 3、计算综合资本成本时的权数，可选择（）。 A 账面价值 B 票面价值 C 市场价值 D 目标价值 4、负债资金在资本结构中产生的影响是（）。