西安交大网络教育2017年秋《英语(四)》在线作业习题答案100分

西安交大网络教育2017年秋《英语(四)》在线作业习题答案100分
西安交大网络教育2017年秋《英语(四)》在线作业习题答案100分

一、选择题

1. It was getting _______ , he had to stop to have a rest.

A. very darker

B. dark and dark

C. darker and darker

D. darkest and darkest

2. The film brought the hours back to me A I was taken good care of in that remote village.

A. when

B. where

C. that

D. until

3. As the busiest woman there, she made _________her duty to look after all the other people's affairs in that town.

A. this

B. that

C. one

D. it

4. It's high time that he settled down in the country and B a new life.

A. start

B. started

C. starting

D. to st

5.I won’t make the ___mistake next time.

A. like

B. same

C. near

D. similar

6.----She has two best friends.

----___of them is in the country.

A. All

B. Both

C. No one

D. Neither

7. This overcoat cost ________. What's more, they are _________small for me.

A. very much; very

B. too much; much too

C. much too; too much

D. very much; too much

8. — Did the medicine make you feel better?

— No. The more ________, ___________ I feel.

A. medicine I take; and the worse

B. medicine I take; the worse

C. I take medicine; the worse

D. I take medicine; worse

9.一Haven’t seen you for ages!What are you busy doing now?

A.1 hate the weather here.

B.My hair is getting a bit longer.

C.Yeah,thanks for coming.

D.I am working part time in a bookshop,you know.

10.—Thanks for your help.

A.My pleasure.B.Never mind.

C.Quite right.D.Don’t thank me

11. The film brought the hours back to me I was taken good care of in that remote village.

A. when

B. where

C. that

D. until

12.一Marilyn,I'm afraid I have to be leaving now.

A.That sounds wonderful.B.Oh,so early?

C.Not at a11.D.Good luck!

13 It is not until you have lost your health _________ you know its value.

A. until

B. when

C. what

D. that

14. It's high time that he settled down in the country and B a new life.

A. start

B. started

C. starting

D. to start

15.一Paul,?

一Oh,that’s my father! And beside him,my mother.

A.what is the person over there

B.who’s talking over there

C.what are they doing

D.which is that

16.一Hi,Tom,how’s everything with you?

—,and how are you?

A.Don’t mention it B.Hmm, not too bad

C.Thanks D.Pretty fast

17.----The baby is hungry.

----But there’s ___milk in the bottle.

A. little

B. a little

C. few

D. a few

18. Would you like something _________?

A. drink

B. to drink

C. drinking

D. for drinking

19. The wild flowers looked like a soft orange blanket _________ the desert.

A. covering

B. covered

C. cover

D. to cover

20. _______ is the population of Paris?

A. How many

B. How much

C. How

D. What

21.----___is your girl friend like?

----She is very kind and good-looking

A. How

B. What

C. Which

D. Who 22.一That’s a beautiful dress you have on!

A.Oh,thanks.I got it yesterday.B.Sorry,it’s too cheap.

C.You can have it.D.See you later.

23. It is not until you have lost your health ___________ you know its value.

A. until

B. when

C. what

D. that

24. As the busiest woman there, she made _________her duty to look after all the other people's affairs in that town.

A. this

B. that

C. one

D. it

25. It was getting ________ , he had to stop to have a rest.

A. very darker

B. dark and dark

C. darker and darker

D. darkest and darkest

26. — Did the medicine make you feel better?

— No. The more ________, ___________ I feel.

A. medicine I take; and the worse

B. medicine I take; the worse

C. I take medicine; the worse

D. I take medicine; worseart

27.一Why didn’t you come to my birthday party yesterday?

A.Excuse me,my friend sent me a flower.

B.Fine,I never go to birthday parties.

C.Ha…ha,I don’t like birthday parties.

D.Sorry,but my wife had a car accident

28.一Hi,welcome back!Had a nice trip?

A.Oh,fantastic!Fresh air,and sunshine every day.

B.Come on.I’ve got lots of fun.

C.By the way,I don’t like Saturdays.

D.Well,I'll look forward to your phone call.

29. The wild flowers looked like a soft orange blanket ________ the desert.

A. covering

B. covered

C. cover

D. to cover

30. ________ is the population of Paris?

A. How many

B. How much

C. How

D. What

31. Would you like something ________?

A. drink

B. to drink

C. drinking

D. for drinking

32. This overcoat cost _______. What's more, they are ________small for me.

A. very much; very

B. too much; much too

C. much too; too much

D. very much; too much

33.—How are you,Bob?

一Ted.

A.How are you? B.I’m fine.Thank you.C.How do you do? D.Nice to meet you.

34.一Hello.I’m Harry Potter.

一Hello,my name is Charles Green,but.

A.call my Charles B.call me at Charles

C.call me Charles D.call Charles me

35. You ____ buy some reference books when you go to the college.

A. could

B. will have to

C. must to

D. might

三、阅读理解 Reading Comprehension(每小题4分,共20分)

Passage 1

It has been reported that in colleges across the United States, the daytime serial drama known as the soap opera has suddenly become "in". Between the hours of 11 a.m. and 4:30 p.m, college television lounges are filled with soap opera fans who can't wait to see the next episode in the lives of their favorite characters.

Actually, soaps are more than a college favorite; they're a youth favorite. When school is out, high-school students are in front of their TV sets. One young working woman admitted that she turned down a higher paying job rather than give up watching her favorite serials. During the 1960's, it was uncommon for young people to watch soap operas. The mood of the sixties was very different from now. It was a time of seriousness, and talk was about social issues of great importance.

Now, seriousness has been replaced by fun. Young people want to be happy. It may seem strange that they should turn to soap opera, which is known for showing trouble

in people's lives. But soap opera is enjoyment. Young people can identify with the soap opera character, who, like the college-age viewer, is looking for happy love, and probably not finding it. And soap opera gives young people a chance to feel close to people without having to bear any responsibility for their problems.

1. What is soap opera? ______

A. Plays based on science fiction stories.

B. Plays based on non-fiction stories.

C. The daytime serial dramas on TV.

D. Popular documentary films on TV.

2. What can be the best title of the passage? ______

A. College student viewers.

B. Favorite TV serials.

C. Soap opera fans.

D. College-age viewers.

3. Which is not the reason why the soap opera suddenly becomes "in" according to the passage? _______

A. Because the viewers want to be happy and to enjoy themselves.

B. Because the soap opera makes young people feel close to their people.

C. Because the viewers can find themselves in the soap opera characters.

D. Because the young people have to bear the responsibilities for their troubles.

4.. What can we learn from the passage? ______

A. College students like soap operas more than any other social groups.

B. Young people of sixties liked soap operas more than people today.

C. Young viewers have turned themselves from the seriousness of sixties to enjoyment now.

D. The young as a whole are trying to look for happy love but in vain.

5.. What message does the author want to convey to us? _____

A. The people's favor toward drama works has been changed for a long time.

B. The people's favor toward drama works changes along with the times.

C. The people's favor toward drama works is changed by the soap opera.

D. The people's favor has changed the drama works.

Passage 2

How men first learnt to invent words is unknown; in other words, the origin of language is a mystery. All we really known is that men, unlike animals, somehow invented certain sounds to express thought and feelings, actions, and things, so that they could communicate with each other; and that later they agreed upon certain signs, called letters, which could be combined to represent those sounds, and which could be written down. Those sounds, whether spoken or written in letters, we call words.

The power of words, then, lies in their associations - the things they bring up before our minds. Words become filled with meaning for us by experience; and the longer we live, the more certain words recall to us the glad and sad events of our past; and the more we read and learn, the more the number of words that mean something

to us increases.

Great writers are those who not only have great thoughts but also express these thoughts in words which appeal powerfully to our minds and emotions. This charming and telling use of words is what we call literary style. Above all, the real poet is a master of words. He can convey his meaning in words which sing like music and which by their position and association can move men to tears. We should therefore

learn to choose our words carefully and use them accurately, or they will make our speech silly and vulgar . (239words)

1. The origin of language is _________

A. a legend handed down from the past

B. a matter that is hidden or secret.

C. a question difficult to answer.

D. a problem not yet solved.

2. What is true about words? __________

A. They are used t to express feelings only.

B. They can not be written down

C. They are simply sounds.

D. They are mysterious.

3. The real power of words lies in their _______.

A. properties

B. characteristics

C. peculiarity

D. representative function

4.By “association”, the author means __________.

A. a special quality

B. a joining of ideas in the mind.

C. an appearance which is puzzling.

D. a strange feature.

5.Which of the following statements about the real poet is NOT true? _________

A. He is no more than a master of words.

B. He can convey his ideas in words which sing like music.

C. He can move men to tears.

D. His style is always charming.

Passage 3

Long, long ago there was a very foolish thief. Do you know what he did one day? When he wanted to steal the bell on his neighbor's door, he walked up to the door, took hold of the bell and pulled hard. The bell made a very loud noise. The thief was afraid and went home.

Then he sat down to think, "I must do something about the noise," he said. He thought and thought. At last he had an idea. "Ah, I'll put some cotton in my ears. Then I won't be able to hear the noise." The next day he went to the door of his neighbor, and took hold of the bell. This time he pulled even harder. The bell rang loudly, but the thief did not hear anything. With another hard pull he got the bell out. Just then the neighbor came running out.

"Steal my bell? I'll teach you a lesson," the angry man shouted. And he hit the thief on the nose.

The foolish thief did not know how the neighbor found out he was stealing the bell. "Why did he come out just then?" he wondered.

1.The thief was trying to get his neighbor's doorbell.

A. T

B. F

2. The thief put some cotton in his ears so as not to hear anything

A. T

B. F

3.The neighbor ran out probably because he knew his doorbell was being stolen.

A. T

B. F

4.The neighbor hit the thief to punish him for stealing.

A. T

B. F

5.The thief thought the neighbor couldn't hear the noise of the bell.

A. T

B.

三、完形填空

Homesickness is very common among students away from home — even those who had previously been away at overnight camp or traveled far away. There is a difference between being away from home for 8 weeks and being gone for 8 months. There is also a difference between 1 home for a while (knowing you will be going back) and leaving 2 (knowing you may never return). Feeling homesick does not make you less mature or mean you are not ready to be 3 . If you feel homesick, talk to your friends at school about it. 4 they are feeling the same way. 5 family and friends back home, but make sure you 6 new relationships at school. If your homesickness does not 7 and does not seem to be getting better after a few months at school, speaking with an adviser might help. Also, remember that going home for the first visit may be difficult 8 changes in yourself or your family. Old conflicts do not just disappear once you go to college, and new ones may 9 . Again, if things are too stressful for you 10 handle alone, talk to an adviser.

1. A. abandoning B. leaving C. being away D. heading for

2. A. forever B. temporarily C. for a short time D. all the time

3. A. yourself B. lonely C. of your own D. on your own

4. A. Most likely B. It’s impossible C. It’s lucky D. Make sure

5. A. Keep in touch with B. Contact with C. Keep contact in D. Communicate

6. A. have built B. do C. formed D. develop

7. A. go with B. go away C. go over D. go through

8. A. thanks to B. because of C. because D. resulting in

9. A. appear B. rise C. raise D. grow

10. A. too B. so C. to D. not

四、完型填空

A rich American went into a shop in London. He wanted very much ___1___ a nice-looking watch. He saw a watch and liked it so much that he decided to buy it. But the owner of the shop asked five hundred dollars for it.While the American was hesitating, a young man suddenly came into the shop, took the watch out of the owner's hand and ran out with it. It all happened in

___2___ seconds. When the owner ran out into the street, the young man had already ___3___ among the people. The American went on. At the next corner, he saw the young man with the stolen watch in his hand, "Do you want to buy a fine watch, sir?" he said in a low voice, "It's only a hundred dollars."

"The young man doesn't know I saw him ___4___ the watch just now," he thought. The American paid at once and went happily back to his room with the watch. He told his friend about the fine watch. His friend ___5___ a look at the watch and started to shout immediately. He said, "You are a fool. This watch is worth only ten dollars. I'm sure the shop owner and the young man planned all this together."

1.A:a few B:disappeared C:to get D:took E:stealing

2.A:a few B:disappeared C:to get D:took E:stealing

3.A:a few B:disappeared C:to get D:took E:stealing

4.A:a few B:disappeared C:to get D:took E:stealing

5.A:a few B:disappeared C:to get D:took E:stealing

There were once three sons of a wealthy businessman. 16 they met, the two eldest, who were twins, 17 to quarrel about which of them should be his father's heir (继承人) . The youngest, who was not 18 ambitious (野心勃勃的), took no part in their argument. As soon as they left home, the father arranged for an adequate income to be provided for 19of them, but insisted that apart from this they were to be financially self-supporting. The 20 twin, who had the advantage of good looks and a striking per-sonality, decided that he would take up the stage 21 a career. He22a small repertory company, acted in minor parts, was always unpunctual (不准时) at rehearsals and was accordingly 23 with his fellow-actors. He earned little and so had to live mainly on his allowance. He occasionally thought of 24his profession, but always put off25 a decision, and he became increasingly bored and disillusioned.

16. A. whatever B. whenever C. wherever D. however

17. A. are used B. used C. using D. are using

18. A. at least B. at most C. in the least D. in the most

19. A. every B. all C. each D. none

20. A. first B. older C. younger D. elder

21. A. is B. as C. be D. /

22. A. joined B. attended C. went D. joined in

23. A. popular B. unpopular C. welcome D. unwelcome

24. A. living B. turning C. ending D. changing

25. A. making B. make C. decide D. deciding

西安交大网络教育《高等数学》答案

一、单选题(共 40 道试题,共 80 分。)V 1. 单选: A. 单调递增但无界的数列 B. 单调递减且有界的数列 C. 单调递增且有界的数列 D. 单调递减且无界的数列 正确答案:C 满分:2 分 2. 单选: A. A B. B C. C D. D 正确答案:B 满分:2 分 3. 单选: A. A B. B C. C D. D 正确答案:B 满分:2 分 4. 单选: A. A B. B C. C

正确答案:C 满分:2 分 5. 单选: A. A B. B C. C D. D 正确答案:C 满分:2 分 6. 单选: A. A B. B C. C D. D 正确答案:D 满分:2 分 7. 单选: A. A B. B C. C D. D 正确答案:D 满分:2 分 8. 单选: A. A

C. C D. D 正确答案:D 满分:2 分 9. 单选: A. A B. B C. C D. D 正确答案:B 满分:2 分 10. 单选: A. A B. B C. C D. D 正确答案:B 满分:2 分 11. 单选: A. A B. B C. C D. D 正确答案:C 满分:2 分

单选: A. A B. B C. C D. D 正确答案:D 满分:2 分 13. 单选: A. A B. B C. C D. D 正确答案:B 满分:2 分14. 单选: A. A B. B C. C D. D 正确答案:A 满分:2 分

15. 单选: A. A B. B C. C D. D 正确答案:A 满分:2 分 16. 单选: A. A B. B C. C D. D 正确答案:C 满分:2 分 17. 单选: A. A B. B C. C D. D 正确答案:B 满分:2 分 18. 单选: A. -2 B. 2 C. 0

西南交大远程教育之数字电路

第一次 15.试根据真值表给出输入输出(输入为AB 输出为Y)的逻辑关系,在表内的空格处填上相应逻辑门的名称。 答:或非、与、异或、或 16.二进制计算:0011+1011= ,1100 –0101= 。 答:10100(最高位是进位)、11111(最高位是借位) 17.逻辑函数的最小项之和表达式= =∑m(),其最简与-或表达式为。 答:,∑m(1,3,4,5), 18.n个变量的逻辑函数有________个最小项,任意两个最小项的乘积为_________,所有最小项之和为_________。 答:2n 、0、1 19.用卡诺图法化简下列各式 (1) (2) (3) (4) (5) 答: 解:(1) (2) (3)

(4) (5) 第二次 6.求出图4.6(a)、(b)所示电路输出F的逻辑表达式。 图4.6(a)图4.6(b) 答: .解:图4.6(a)的输出逻辑表达式: 图4.6(b)的输出逻辑表达式: 7.写出图4.7所示电路输出F的逻辑表达式。 答: 解:图4.7的输出逻辑表达式: 8.试用8-1数据选择器74151组成三输入信号的奇偶校验电路。当输入信号中1的个数为偶数时,输出为1,否则输出为0。设输入为 A、B、C,输出为F。要求完成以下各项: (1)列出真值表;(2)写出函数表达式;(3)画出逻辑电路图。 答: 解:(1

0 0 0 1 0 0 1 0 0 1 0 0 0 1 1 1 1 0 0 0 1 0 1 1 1 1 0 1 1 1 1 0 74151 E 1 F (2)输出逻辑表达式: (3)电路图 9.试设计一个监视交通信号灯工作状态,逻辑电路正常工作时,任何时刻必须有一盏灯亮,而其他情况均为电路发生故障,这时要求能发出故障信号。用1个3-8译码器74138和必要的门实现,画出逻辑电路图。 答: 解:设R,Y,G分别表示红,黄,绿三个灯的状态,为1时表示灯亮; F为输出的故障信号,电路发生故障时F=1,否则F=0。 R Y G F 0 0 0 1 0 0 1 0 0 1 0 0 0 1 1 1 1 0 0 0 1 0 1 1 1 1 0 1 1 1 1 1 输出函数表达式为: 将R,Y,G分别接74138的A2,A1,A0,则:

2016西安交通大学网络学院《高等数学》(专升本)3答案

一、单选题(共 40 道试题,共 80 分。) 1. 如题: A. A B. B C. C D. D 正确答案:C 满分:2 分 2. 如题: A. A B. B C. C D. D 正确答案:C 满分:2 分 3. 如题: A. A B. B C. C D. D 正确答案:A 满分:2 分

4. 如题: A. A B. B C. C D. D 正确答案:B 满分:2 分5. 如题: A. A B. B C. C D. D 正确答案:D 满分:2 分 6. 如题: A. A B. B C. C D. D 正确答案:C 满分:2 分

7. 如题: A. A B. B C. C D. D 正确答案:D 满分:2 分 8. 如题: A. A B. B C. C D. D 正确答案:C 满分:2 分 9. 如题: A. A B. B C. C D. D 正确答案:D 满分:2 分

10. 如题: A. A B. B C. C D. D 正确答案:A 满分:2 分11. 如题: A. A B. B C. C D. D 正确答案:D 满分:2 分12. 如题: A. A B. B C. C D. D

正确答案:B 满分:2 分 13. 如题: A. A B. B C. C D. D 正确答案:A 满分:2 分 14. 如题: A. A B. B C. C D. D 正确答案:C 满分:2 分15. 如题: A. A B. B C. C D. D 正确答案:B 满分:2 分

16. 如题: A. A B. B C. C D. D 正确答案:D 满分:2 分 17. 如题: A. A B. B C. C D. D 正确答案:A 满分:2 分 18. 如题: A. A B. B C. C D. D 正确答案:C 满分:2 分

西安交通大学网络教育学院(专升本)《电工电子技术-学习指南设计》

电工电子技术-学习指南 一、 填空题 1. 电流的方向定义为______电荷运动的方向。电流的参考方向则是________________的方向。 答案:正;人为定义 2. 某电压源的电压与电流为非关联参考方向,已知其电压为5V ,电流为-2A ,则该电压源提供的功率为_________W 。 答案:10 3. 用叠加定理求解电路时,当某独立源单独作用时,将其余独立电压源用_______代替,独立电流源作________代替。 答案:短路;开路 4. 通常说,“把灯泡接到220V 正弦电源”,这里的220V 指的是___________值。如把灯泡接到_______V 的直流电源,两者的发光效果相同。 答案:有效值;220 5. 正弦量的角频率、周期T 与频率f 三者之间的关系式为_________________________。 答案:ω π 21== f T 6. 磁场中某点的磁场强度H 的大小,等于该点的磁感应强度B 与____________的比值,其国际单位制单位是___________。 答案:磁导率μ;特斯拉T 7. 铁磁性物质在交变磁化过程中,磁感应强度的变化落后于磁场强度变化的现象,称为________现象。 答案:磁滞 8. 在集中参数电路中,任意时刻所有元件吸收的电功率的总和_____________________。 答案:等于零 9. 在电流一定的条件下,线性电阻元件的电导值越大,消耗的功率__________。在电压一定的条件下,电导值越大,消耗的功率___________。

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B.1/2 C.-1 D.1 10.下图结构为(D)体系 A.几何不变,无多余联系; B.几何不变,有多余联系; C.瞬变; D.常变 11.下图有几个多余约束(C) A.0 B.1 C.2 D.3 12.在推导转角位移方程时,考虑了下列变形的影响:A A.弯曲变形; B.弯曲与剪切变形; C.弯曲与轴向变形;

D.弯曲、剪切和轴向变形。 13.在位移法中,将铰接端的角位移、滑动支承端的线位移作为基本未知量:C A.绝对不可; B.一定条件下可以; C.可以,但不必; D.必须。 14.求解1支座处的支座反力D A.F B.0 C.2F D.F/2 15.根据转角位移方程:A A.已知杆端位移就一定能够确定杆端力; B.在没有刚体位移时,已知杆端位移才能确定杆端力; C.已知杆端力就可以确定杆端位移; D.即使已知刚体位移,知道了杆端力也不能唯一确定杆端位移。

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7. 如题: A. A B. B C. C D. D 8. 如题: A. A B. B C. C D. D 9. 如题: A. A B. B C. C D. D 10. 如题: A. A B. B C. C D. D 11. 如题: A. A B. B C. C D. D 12. 如题: A. A B. B C. C D. D

13. 如题: A. A B. B C. C D. D 14. 如题: A. A B. B C.C D. D 15. 如题: A. A B. B C. C D. D 16. 如题: A. A B. B C. C D. D 17. 如题: A. A B. B C. C D. D 18. 如题: A. A B. B C. C D. D 满分:2 分

19. 如题: A. A B. B C. C D.D 20. 如题: A. A B. B C. C D. D 21. 如题: A. A B. B C. C D. D 满分:2 分 22. 如题: A. A B. B C. C D. D 满分:2 分 23. 如题: A. A B. B C. C D. D 满分:2 分 24. 如题: A. A B. B C. C

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Directions: For this part, you are allowed 30 minutes to write a composition on the topic “How to Keep Healthy”. You should write no less than 80 words.

Directions: For this part, you are allowed 30 minutes to write a composition on the topic “My Favorite Season”. You should write no less than 80 words.

Directions: For this part, you are allowed 30 minutes to write a composition on the topic “Private Cars”. You should write no less than 80 words.

Directions: For this part, you are allowed 30 minutes to write a composition on the topic “A City to Remember”. You should write no less than 80 words.

Directions: For this part, you are allowed 30 minutes to write a composition on the topic “Online Shopping”. You should write no less than 80 words.

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地位、控制企业合并三个方面,在比较有特殊情况的国家,如前所述,我国还应该包括禁止(),作为第四块实体性规制内容。 答案C:立法垄断 12.经济法的主要主体是() 答案B:社会组织 13.劳务报酬所得特许权使用费所得等适用() 答案C:20%的比例税率 14.防止土壤恶化不包括防止() 答案C:水土流失 15.《产品质量法》规定,国家对产品质量的监督检查的主要方式是() 答案D:抽查 16.下列不属于我国经济法渊源的有() 答案A:世界贸易组织的各种协定 17.下列关于我国企业所得税的说法正确的是() 答案A:国有企业的税收适用《企业所得税法》 18.下列属于我国《广告法》调整的广告类型有() 答案D:商业广告 19.在处于社会转型期的国家,如我国,()在经济生活中的作用非常巨大,于是由于行政力量直接或者间接导致行政垄断的形成,因此,在这些国家的反垄断法制中,禁止行政垄断即成为第四块重要内容。 答案B:行政权力 20.反垄断执法机构设置的原则,不包括以下哪一项() 答案B:反垄断机关具有最高权利性 21.下列哪项可以认定为生产者履行了产品质量义务() 答案C:产品存在瑕疵,生产者作出说明销售。 22.根据我国《反垄断法》的规定,关于可以推定经营者具有市场支配地位的标准描述正确的是()

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4. 如题: A. A B. B C. C D. D 正确答案:B 满分:2 分5. 如题: A. A B. B C. C D. D 正确答案:D 满分:2 分 6. 如题: A. A B. B C. C D. D 正确答案:C 满分:2 分

7. 如题: A. A B. B C. C D. D 正确答案:D 满分:2 分 8. 如题: A. A B. B C. C D. D 正确答案:C 满分:2 分 9. 如题: A. A B. B C. C D. D 正确答案:D 满分:2 分

10. 如题: A. A B. B C. C D. D 正确答案:A 满分:2 分11. 如题: A. A B. B C. C D. D 正确答案:D 满分:2 分12. 如题: A. A B. B C. C D. D

正确答案:B 满分:2 分 13. 如题: A. A B. B C. C D. D 正确答案:A 满分:2 分 14. 如题: A. A B. B C. C D. D 正确答案:C 满分:2 分15. 如题: A. A B. B C. C D. D 正确答案:B 满分:2 分

16. 如题: A. A B. B C. C D. D 正确答案:D 满分:2 分 17. 如题: A. A B. B C. C D. D 正确答案:A 满分:2 分 18. 如题: A. A B. B C. C D. D 正确答案:C 满分:2 分

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