大学英语自学课程(下)(北京科技大学)1001551007 中国大学MOOC答案100分完整版

和矛帛悸潭仆莫怜妹熄扮汞奉

Topic 1 Inner Voice 内心的声音

Building Your Vocabulary–二选一

1、填空题:
‍‍‍Directions: Complete each of the following sentences with the correct choice of the words given in the brackets. ‍‍Television helps to relieve the ______ of the long winter evenings. (bore, boredom)‍
答案:  boredom

2、填空题:
‌Some groups, ______ students and pensioners, will benefit from the new tax. (name, namely)‍
答案:  namely

3、填空题:
‏The main ______ is a young girl from a small fishing village in Japan. (character, characteristic)‌
答案:  character

4、填空题:
‍The ______ was becoming unbearable, and I wanted to scream. (tense, tension)‏
答案:  tension

5、填空题:
‎He could also be very disagreeable and say hard and ______ things. (sour, sourness)‌
答案:  sour

6、填空题:
‏The room was simply furnished and ______ to the eye. (pleased, pleasing)‎
答案:  pleasing

Building Your Vocabulary–介词

1、填空题:
‏Directions: Complete each of the following sentences with a suitable word. ‏‏With greatly increased workloads, everyone is ______ pressure now.‏
答案:  under

2、填空题:
‎ He would often strike ______ conversations with complete strangers.‌
答案:  up

3、填空题:
‌ Windy days are characteristic ______ March in Beijing.​
答案:  of

4、填空题:
‏ ______ luck would have it, there was one seat left.‌
答案:  As

5、填空题:
‎They converted the old school ______ luxury flats.‏
答案:  into

6、填空题:
‏ I nearly jumped out of my ______ when I saw her face at the window.‎
答案:  skin

Cloze–填空

1、填空题:
‍Directions: Choose from the following transitional expressions and put them in the blanks in the paragraph. ​‍ in addition   as     finally     for example   even if    also​‍       ​The erosion of the middle of the labor market is easy to misinterpret, because its roots are multiple. During the 1970s, the entry into the work force of an unprecedented number of women and of young adults born during the baby boom resulted in too many workers for the jobs available, and depressed wages. The decline of the middle ___1___ has something to do with the explosive growth in world trade since 1960. ___2___ manufacturing technologies have become more mobile, and multinational firms more footloose, production jobs have migrated from the U.S. to countries where wages are low. __3____, technology itself has helped to provoke the shifts in the job market. __4____, fewer American workers would have been needed to make steel in 1980 than in 1960 ___5___ the pressures of global competition had not been a factor, because new machines have made many of their tasks redundant. ___6___, the high rate of unemployment caused by these trends has tended to drive wages down further, especially at the low end, since it forces unskilled workers to compete for their jobs with unemployed people who are willing to do the work for less. ​‍请填入正确的单词 (注意单词首字母的大小写)​‍1. __________​
答案:  also

2、填空题:
‎__________​
答案:  As

3、填空题:
​__________‏
答案:  In addition

4、填空题:
‎__________​
答案:  For example

5、填空题:
‎__________​
答案:  even if

6、填空题:
‌__________‏
答案:  Finally

Organizing Your Ideas–排序

1、填空题:
‍‌Directions: Put the following sentences in the proper order so that they make a complete paragraph. For example 123456 ‍1. Stand relaxed with your hands loosely at your side and close your eyelids.‍2. Keep thinking and thanking until you feel your heart has truly opened up.‍3. Think about something or someone you are truly and deeply grateful for. ‍4. Now ask your inner voice for any guiding message.    ‍5. Take a few deep breaths. Inhale and exhale through the nose slowly.  ‍6. Follow the steps below and commune with your wise inner guide.‍‌(答案形式必须为:123456 否则一律不对,无空格无标点,直接填写6个数字)‍
答案:  615324

Sef-Assessment 1

1、单选题:
Section D     ‏Directions: Read the following text about children’s curiosity. For questions 41-45, choose the answer (A, B, C or D) which you think fits best according to the text. ‏ ‏Share Children’s Curiosity‏ ‏Children start out as natural scientists, eager to look into the world around them. Helping them enjoy science can be easy; there’s no need for a lot of scientific terms or expensive lab equipment. You only have to share your children’s curiosity. ‏Firstly, listen to their questions. I once visited a classroom of seven-year-olds to talk about science as a job. The children asked me “textbook questions” about schooling, salary and whether I liked my job. When I finished answering, we sat facing one another in silence. Finally I said, “Now that we’re finished with your lists, do you have questions of your own about science?” After a long pause, a boy raised his hand, “Have you ever seen a grasshopper (蚱蜢) eat? When I try eating leaves like that, I get a stomachache. Why?” This began a set of questions that lasted nearly two hours. ‏Secondly, give them time to think. Studies over the past 30 years have shown that, after asking a question, adults typically wait only one second or less for an answer, no time for a child to think. When adults increase their “wait time” to three seconds or more, children give more logical, complete and creative answers.‏Thirdly, watch your language. Once you have a child involved in a science discussion, don’t jump in with “That’s right” or “Very good”. These words work well when it comes to encouraging good behavior. But in talking about science, quick praise can signal that discussion is over. Instead, keep things going by saying “That’s interesting” or “I’d never thought of it that way before”, or coming up with more questions or ideas.‏Lastly, show; don’t tell. Real-life impressions of nature are far more imposing than any lesson children can learn from a book or a television program. Let children look at their fingertips through a magnifying glass(放大镜), and they’ll understand why you want them to wash before dinner.‏‏41. What can people do to help children to enjoy science according to the passage?  ‏

A: Teach them some scientific terms.
B: Share their curiosity.
C: Show the world around them.
D: Arouse their eagerness.
答案:  Share their curiosity.

2、单选题:
​What does the author try to tell the readers from the example in paragraph 2?‍

A: Young children are interested in textbook questions.
B: Adults should talk about children’s questions in detail.
C: Young children are very brave to try the new things.
D: Adults should listen to children’s questions.
答案:  Adults should listen to children’s questions.

3、单选题:
‎Studies show that longer “wait time” allowed to children may help them ______.‍

A: answer questions more creatively
B: give a correct answer
C: show their interest in the questions
D: tell their own story
答案:  answer questions more creatively

4、单选题:
‎What might happen if adults interrupt a science discussion with kids by saying  “That’s right”?‌

A: Children are satisfied with the praise.
B: Children are encouraged to behave well.
C: Children may come up with more ideas.
D: Children may mistake that as the ending of the discussion.
答案:  Children may mistake that as the ending of the discussion.

5、单选题:
​The word “imposing” in the last paragraph means ______.‌

A: interesting
B: careful
C: impressive
D: bored
答案:  impressive

6、判断题:
‎Section B                                                                                         ​Directions: Read the following article and choose “True” or “False” for sentences 26-35.​ ​Letters to Soldiers​ ​Many years ago, an old woman named Peggy Ford wrote letters to some men. The men were soldiers who were fighting in the Vietnam War. The soldiers were in fight, far way from their home. They missed their families, and they liked to get the letters from Peggy. Peggy also kept the letters that the soldiers wrote back to her.      Peggy Ford died more than 30 years ago. Earlier this year, Ford’s children discovered the letters in her attic (阁楼). They decided to donate the letters to a history museum. The museum is happy to have the letters. They feel that the soldiers’ stories of the war are valuable. They tell the story of the war better than anyone else could. The museum feels that it’s important to remember the war. The letters show a personal viewpoint of the war. They are a valuable part of history.     A news station filmed a story about Peggy Ford and the letters. The story was posted on the Internet. Many people saw the story, and read about Ford’s letters to the soldiers. The story made other people want to donate letters. Many people called the museum. They offered to donate their letters from that era. One woman gave the museum more than 200 letters that she wrote to her husband while he was stationed in Vietnam. She had saved them for many years. She thought others would be interested in them.      Peggy Ford was a kind, caring woman. Her letters to the soldiers made them feel better. One woman thinks Ford is an inspiration. She is urging others to write to soldiers in Iraq. She says that a letter would bring a smile to a soldier’s face. Cookies and other treats could be sent with the letters. Small gifts and letters would make the soldiers feel better. She believes that it’s important to say thank you to the soldiers. She thinks the letters would be a good way to do that. She knows that the soldiers appreciate the letters.​‎​‎26. Peggy Ford wrote letters to those who were interested in the Vietnam War. ​

A: 正确
B: 错误
答案:  错误

7、判断题:
‍The soldiers in the war were happy to receive letters because they were homesick.‌

A: 正确
B: 错误
答案:  正确

8、判断题:
‌Ford’s children gave the letters she wrote to the soldiers to a history museum. ​

A: 正确
B: 错误
答案:  错误

9、判断题:
‍The letters from the soldiers can best tell the story of the war.‏

A: 正确
B: 错误
答案:  正确

10、判断题:
‎Many people got to know Peggy Ford and the letters on the Internet.‍

A: 正确
B: 错误
答案:  正确

11、判断题:
‍Motivated by Ford’s story Many people offered to contribute their letters from the war time. ‏

A: 正确
B: 错误
答案:  正确

12、判断题:
‎One woman donated the letters she wrote to her husband because they were interesting. ‌

A: 正确
B: 错误
答案:  错误

13、判断题:
‌Peggy Ford was inspired to persuade others to write letters to soldiers in Iraq. ‎

A: 正确
B: 错误
答案:  错误

14、判断题:
‍Small gifts sent to soldiers would usually make them in good mood.‎

A: 正确
B: 错误
答案:  正确

15、判断题:
‍Letters would be a good way to show people’s appreciation to the soldiers.  ‎

A: 正确
B: 错误
答案:  正确

16、填空题:
‍Part I  Vocabulary​‍Section A​‍Directions: Fill in the blanks with the words given below. Change the form where necessary.​‍prompt          brighten              upset                radiate             attempt ​‍inner             overwhelm         inherit               modest             attach    ​‍A recent photograph should be ______ to your application form. ​
答案:  attached

17、填空题:
‌The spokesperson has rejected all our ______ to talk to him.‌
答案:  attempts

18、填空题:
‌They are all still very ______ about losing the case.‌
答案:  upset

19、填空题:
‌A (An) ______ majority of the members were against the idea.‎
答案:  overwhelming

20、填空题:
‍Many varied motives ______ individuals to join a political party. ​
答案:  prompt

21、填空题:
​Parents have ______ conflicts as they try to decide what is best for their children.​
答案:  inner

22、填空题:
‏His income was ______ compared with that of other chief executives.‌
答案:  modest

23、填空题:
​Her presence greatly ______ up the evening party last night.‍
答案:  brightened

24、填空题:
‍Happy, healthy, and vibrant people ______ positive energy to those around them.‍
答案:  radiate

25、填空题:
‎He had ______ a considerable personal fortune from his uncle.‏
答案:  inherited

26、填空题:
​Section B‎​Directions: Complete each of the following sentences with a suitable preposition ‎​With greatly increased workloads, everyone is ______ pressure now.‎​‎
答案:  under

27、填空题:
​He would often strike ______ conversations with complete strangers.‏
答案:  up

28、填空题:
‍Windy days are characteristic ______ March in Beijing.‍
答案:  of

29、填空题:
‍They converted the old school ______ luxury flats.‌
答案:  into

30、填空题:
‎I nearly jumped ______ of my skin when I saw her face at the window.‌
答案:  out

31、填空题:
‎Part II  Reading Comprehension‎‎Section A‎‎Directions: Fill in the blanks with a word or a phrase that best completes the passage. You may choose a suitable one from the list given.‎‎whose                night           interact        nonstop         what   ‎‎accordingly          view                  end   up         choose          opportunity‎ ‎Our words have power, and our speech has the power to set the energy or the directions we ___16___ in our lives. If we say good and positive things, good and positive things (experiences) happen to us. These words give us the ___17___ to experience life from a positive or optimistic point of ___18___. If, on the other hand, we come from negativity and say negative things, ___19___, negative things happen to us or we ___20___ seeing life as one big problem or disappointment. ‎‎While we are all familiar with our external speech or voice, we also have another voice that we work with and ___21___ with every day. This is our “inner voice”. While at first glance you may think: “what is inner voice”? But when you come right down to it, we are all familiar with our inner voice. Our inner voice is that small utterance that comes from deep within us, ___22___ job it is to provide us with guidance. This is a different kind of communication than ___23___ comes from our normal waking conscious, which I call our “analyzer”. When our analyzer is talking, the communication we receive tends to seem more like a ___24___ conversation that goes on inside our heads all day and sometimes well into the ___25___. ‎‎‎‎16. __________‎
答案:  choose

32、填空题:
‎__________‌
答案:  opportunity

33、填空题:
‌__________‌
答案:  view

34、填空题:
‍__________‌
答案:  accordingly

35、填空题:
‍__________​
答案:  end up

36、填空题:
‎__________‎
答案:  interact

37、填空题:
​__________‎
答案:  whose

38、填空题:
​__________‌
答案:  what

39、填空题:
‏__________‍
答案:  nonstop

40、填空题:
‎__________​
答案:  night

41、填空题:
‏Section C            ​‏Directions: Read the following text about analyzing a problem. Five sentences have been removed from the text. Choose the best sentence from the list A-F on the next page to fill in each of the gaps (26-30). There is one extra sentence which you do not need to use. ​ ​Six Stages in Analyzing a Problem​ ​People do not analyze every problem they meet. Sometimes they try to remember a solution from the last time they had a similar problem. They often accept the opinions or ideas of other people. Other times they try to find a solution by trial and error. (36)_______________.     First the person must recognize that there is a problem. For example, Sam’s bicycle is broken, and he cannot read it to class as he usually does. Sam must see that there is a problem with his bicycle.     Next the thinker must define the problem. (37)_______________. For instance, he must determine if the problem is with the gears (齿轮), the brakes, or the frame. He must make his problem more specific.     Now the person must look for information that will make the problem clearer and lead to possible solutions. For instance, suppose Sam decided that his bike does not work because there is something wrong with the gear wheels. (38)_______________. He can talk to his friends at the bike shop. He can look at his gears carefully.     After studying the problem, the person should have several suggestions for a possible solution. Take Sam as an illustration. His suggestions might be: put oil on the gear wheels; buy new gear wheels and replace the old ones; tighten or loosen the gear wheels.     (39)_______________. Sometimes the final idea comes very suddenly because the thinker suddenly sees something new or sees something in a new way. Sam, for example, suddenly sees that there is a piece of chewing gum between the gear wheels. He immediately realizes the solution to his problem: he must clean the gear wheels.     Finally the solution is tested. (40)_______________. In short, he has solved the problem.​‏ ​‏A. Eventually one suggestion seems to be the solution to the problem.​‏B. At this time, he can look in his bicycle repair book.​‏C. Before Sam can repair his bicycle, he must find out the reason why it does not work.​‏D. Consequently one should test his own reasoning power against the problem.​‏E. However, when all these methods fail, the person with a problem has to start analyzing.​‏F. Sam cleans the gear wheels and finds that afterwards his bicycle works perfectly.​‏​‏请填入正确答案的大写字母!​‏​‏__________​
答案:  E

42、填空题:
‏__________​
答案:  C

43、填空题:
‎__________‌
答案:  B

44、填空题:
‌__________‎
答案:  A

45、填空题:
‎__________‍
答案:  F

Translation-句子翻译

1、填空题:
‌Directions: Translate the following sentences into English, using the words or phrases in the brackets.‎‌____________________ (他太渴望学习了) that he stays late every evening. (be eager to do)‎
答案:  He is so eager to learn

2、填空题:
‏Pat didn’t feel like ____________________  (参加庆祝活动). (join in)‍
答案:  joining in the celebrations

3、填空题:
‎At the age of 18, he  ____________________ (从父亲那里继承了巨额财产). (inherit)‏
答案:  inherited a huge fortune from his father

4、填空题:
‍A solar cell ____________________  (将太阳的辐射转换成电力). (convert … into …)‎
答案:  converts radiation from the sun into electricity

5、填空题:
‏As a serious candidate, you want to____________________ (给每一个你遇到的人留下好印象). (make an impression on)‍
答案:  make a good impression on everyone you meet

Topic 2 The Great Minds 伟大的头脑

Building Your Vocabulary–二选一

1、填空题:
Directions: Complete each of the following sentences with the correct choice of the words given in the brackets.​All this should provide a spur to the waste industry and speed the ______ of new technology. (adopt, adoption)​
答案:  adoption

2、填空题:
If you have made an ______ with a customer, you should keep the time. (appoint, appointment)‎
答案:  appointment

3、填空题:
Could you give me a ______ reason why I am not allowed to accept that scholarship? (convince, convincing )‍
答案:  convincing

4、填空题:
Even if the genes are not ______ hazardous, you can’t imagine how they will evolve. (initial, initially)‍
答案:  initially

5、填空题:
The personnel department is responsible for drafting ______ policy. (recruit, recruitment)‏
答案:  recruitment

6、填空题:
The team enjoyed a high reputation for having had five ______ victories in the World Championships. (successive, succession)‍
答案:  successive

Building Your Vocabulary–介词

1、填空题:
​Directions: Complete each of the following sentences with a suitable word. ‍​There is fierce competition ______ the three leading soap manufacturers.‍
答案:  between##%_YZPRLFH_%##among

2、填空题:
To increase efficiency, they replaced the permanent staff ______ part-timers.‌
答案:  with

3、填空题:
We would like to announce the appointment of Julia Lewis ______ head of sales.‏
答案:  as

4、填空题:
The introduction ______ new working practices has dramatically improved productivity.‌‌‌
答案:  of

5、填空题:
Iknew I wouldn’t get my exam results for several weeks, and I wasn’t sure what to do ______ the meanwhile.‏
答案:  in

6、填空题:
She donated a large sum of money to some charity ______ her father’s memory.‏
答案:  in

Organizing Your Ideas-排序

1、填空题:
​‏​Directions: Put the following sentences in the proper order so that they make a complete paragraph. FOR EXAMPLE: 123456789‏​1. It was, in fact, the little known Cleisthenes.‏​2. Who is the father of democracy?‏​3. Not Thomas Jefferson, as many people oddly seem to think.‏​4. From 508 to 502 BC, he began to develop a series of major reforms, leading to the formation of Athenian Democracy.‏​5. He first introduced democracy to the Greek city states in 508 BC, after he gained political power in Athens.‏​6. All citizens over the age of thirty were eligible to sit on the council, encouraging public involvement in the government.‏​7. He made all free men living in Athens and Attica citizens, giving them the right to vote as part of a democratic society.‏​8. While the format may not be the same as the many democracies around the world today, there is no doubt that this was the first step.‏​9. He also established a council. ‏
答案:  231547968

Self-Assessment 2

1、单选题:
Section D     ‎Directions: Read the following text about children’s curiosity. For questions 41-45, choose the answer (A, B, C or D) which you think fits best according to the text. ‎The Changing Relationship Between Parents and Children‎ ‎Parents and kids today dress alike, listen to the same music, and are friends. Is this a good thing? Sometimes, when Mr. Ballmer and his 16-year-old daughter, Elizabeth, listen to rock music together and talk about interests both enjoy, such as pop culture, he remembers his more distant relationship with his parents when he was a teenager. Music was not the only gap. From clothing and hairstyles to activities and expectations, earlier generations of parents and children often appeared to move in separate orbits.‎Today, the generation gap has not disappeared, but it is getting narrow in many families. Conversations on subjects such as sex and drugs would not have taken place a generation ago. Now they are comfortable and common. And parent-child activities, from shopping to sports, involve a feeling of trust and friendship that can continue into adulthood. No wonder greeting cards today carry the message, “To my mother, my best friend.”‎But family experts warn that the new equality can also result in less respect for parents. “There’s still a lot of strictness and authority on the part of parents out there, but there is a change happening,” says Kerrie, a psychology professor at Lebanon Valley College. “In the middle of that change, there is a lot of confusion among parents.”‎‎Family researchers offer a variety of reasons for these evolving roles and attitudes. They see the 1960s as a turning point. Great cultural changes led to more open communication and a more democratic process that encourages everyone to have a say.‎“My parents were on the ‘before’ side of that change, but today’s parents, the 40-year-olds, were on the ‘after’ side,” explains Mr. Ballmer. “It’s not something easily accomplished by parents these days, because life is more difficult to understand or deal with, but sharing interests does make it more fun to be a parent now.”‎‎41. The words “move in separate orbits” (Line 6, Para. 1) means _____.‎

A: have different interests
B: live in separate houses
C: have a higher expectation
D: regard each other as enemy
答案:  have different interests

2、单选题:
‎If parents and children do things together, it can _____.​

A: make children become mature
B: motivate their trust and friendship
C: create a comfortable lifestyle
D: remove the generation gap
答案:  motivate their trust and friendship

3、单选题:
‏The possible result of the equality is that _____.‎

A: children do whatever they want to do
B: parents lose their respect from children
C: children are confused with their life
D: parents know nothing about their children
答案:  parents lose their respect from children

4、单选题:
‎What led to the equality according to family researchers?​

A: Social revolution.
B: Economic depression.
C: Cultural changes.
D: Political reform.
答案:  Cultural changes.

5、单选题:
‏According to Mr. Ballmer, being a parent can be more enjoyable if he _____.‎

A: finds easy tasks
B: starts communication
C: becomes understanding
D: shares interest
答案:  shares interest

6、判断题:
‎Section B                                                                                         ‍Directions: Read the following article and choose “True” or “False” for sentences 26-35..‍Shopping for Clothes‍ ‍Shopping for clothes is not the same experience for a man as it is for a woman. A man goes shopping because he needs something. His purpose is settled and decided in advance. He knows what he wants, and his objective is to find it and buy it; the price is a secondary consideration. All men simply walk into a shop and ask the assistant for what they want. If the shop has it in stock, the salesman promptly produces it, and the business of trying it on follows at once. All being well, the deal can be and often is completed in less than five minutes, with hardly any chat and to everyone’s satisfaction.     For a man, slight problems may begin when the shop does not have what he wants, or does not have exactly what he wants. In that case the salesman tries to sell the customer something else. He does so with skill: “I know this jacket is not the style you want, sir, but would you like to try it for size? It happens to be the color you mentioned.” Few men have patience with this treatment, and the usual response is: “This is the right color and may be the right size, but I should be wasting my time and yours by trying it on.”   Now how does a woman go about buying clothes? In almost every respect she does so in the opposite way. Her shopping is not often based on need. She has never fully made up her mind what she wants, and she is only “having a look round”. She is always open to persuasion. She will try on any number of things. Uppermost in her mind is the thought of finding something that everyone thinks suits her. Faced with a roomful of dresses, a woman may easily spend an hour going from one rail to another, often retracing (折返) her steps, before selecting the dresses she wants to try on. It is a laborious process, but apparently an enjoyable one. Most dress shops provide chairs for the waiting husbands. ‍ ‍‎ 26. Men and women always shop for clothes in different ways.  ‍

A: 正确
B: 错误
答案:  正确

7、判断题:
‍A man always sets up his mind on what clothes he needs before his shopping.‏

A: 正确
B: 错误
答案:  正确

8、判断题:
‍A man would buy the clothes without trying it on if the shop has it in stock.‎

A: 正确
B: 错误
答案:  错误

9、判断题:
‏A man can finish his shopping for clothes quickly if everything goes well. ‍

A: 正确
B: 错误
答案:  正确

10、判断题:
‍Salesman always quits if there is no what a man exactly wants in the clothes shop.​

A: 正确
B: 错误
答案:  错误

11、判断题:
‏A man would politely refuse the saleman’s offer for other clothes because he has no time. ​

A: 正确
B: 错误
答案:  错误

12、判断题:
​A woman shops for clothes because she feels it necessary to buy some.‍

A: 正确
B: 错误
答案:  错误

13、判断题:
‎Salesman can always convince a woman to try on more clothes.‌

A: 正确
B: 错误
答案:  正确

14、判断题:
‏The most important point for a woman in shopping is to find some clothes that best fit her. ‍

A: 正确
B: 错误
答案:  正确

15、判断题:
‎Chairs are provided by most dress shops for exhausted women.‍

A: 正确
B: 错误
答案:  错误

16、填空题:
‍Part I  Vocabulary‍‍Section A‍‍Directions: Fill in the blanks with the words given below. Change the form where necessary.‍‍fulfill                   possession         obstacle      perspective         profound    ‍‍incredible          foundation           vision           immense           unexpected‍‍Corruption has been identified as the single greatest ______ to economic and social development.‍
答案:  obstacle

17、填空题:
‏It seemed ______ that people would still want to play football during a war.‍
答案:  incredible

18、填空题:
​Today some people are using a kind of telephone called the picture phone or ______ phone.‌
答案:  vision

19、填空题:
​You must be able to influence business decisions from a human resources ______.‏
答案:  perspective

20、填空题:
​It was then that the organization finally began to ______ the hopes of its founders.‍
答案:  fulfill

21、填空题:
‌Her parents’ divorce had a(an)______ effect on her life.‎
答案:  profound

22、填空题:
​The issue strikes at the very ______ of our community.‏
答案:  foundation

23、填空题:
‏It is pity that so many useful discoveries should be in the ______ of a silent man.‌
答案:  possession

24、填空题:
‍Some of the industry’s innovations have caused ______ damage.‌
答案:  immense

25、填空题:
‏I confess to being astonished at this __



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