Research out supports my idea that our company should take action in no time. A．to carry B．carrying C．being carried D．having carried 题目和参考答案——青夏教育精英家教网—

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Research ________ out supports my idea that our company should take action in no time.

A．to carry B．carrying

C．being carried D．having carried

C　考查非谓语。句意：正在进行的研究证明我的观点是正确的，我们公司应该立即采取行动。being carried out是现在分词的被动形式作定语修饰research，意为“正在进行的研究”。A、B、D都没有被动之意。

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College libraries are designed primarily for research and study．To explain its use, let us choose a research topic and follow the step-by-step procedure of looking up the material for the paper．

Suppose your assignment is to write a paper on a novel called “The Sun Also Rises” by American writer Hemingway．The first step is to go to the main catalog．Many small drawers on the large wooden cabinets are lined up in alphabetical（字母的） order．Each of the drawers contains hundreds of alphabetical ordered cards．These cards are printed references to all material available in the library．Title cards are cataloged （为…编目录） by the first word of the book title, leaving out the articles like “a”, “an” and “the”．And then you get the cards for the books you need．On the upper left corner of each card is the call number．This is the numerical code that shows where the book is located in the library．The library has open and closed stacks．If your book is on the open stacks, you can go to the open-stack room, and according to the call number find it out by yourself．There are only about 30,000 books on open stacks, while most of the 800,000 books in our library are kept in closed stacks, which are accessible only to teachers and graduate students．

For undergraduates like you, borrowing books from the closed stacks have to be done with the help of our librarian．In that case, you must fill out a call slip（纸条） for the book, showing the call number, author and title．You can get call slips on tables near the catalog cabinets．You show your call slip together with your library card to a librarian at the information desk．He or she will help you find the book out in the closed stacks．

What is the main purpose of this text?

A．To present readers a brief introduction to a college library．

B．To guide readers how to find books needed in a college library．

C．To tell readers how to fill out a call slip in a college library．

D．To show readers where to find books in a college library．

What letter you should look for on the title card for the book “The Old Man and the Sea” by the Hemingway?

A．The letter “t”． B．The letter “h”． C．The letter “s”． D．The letter “o”．

How are books arranged and shelved in the library?

A．By call numbers． B．By call slips of authors’ names．

C．In alphabetical order． D．By the first word of book title．

Suppose you are an undergraduate and you want to borrow a book from the closed stacks, which is the correct order to do it?

a．go to the main catalog b．show your call slip and library card

c．find out the call number d．fill out a call slip

e．get the cards for the books

A．a-b-e-d-c B．a-e-c-d-b

C．b-a-c-d-e D．b-c-a-e-d

A chemical important of brain development may play a role in explaining why some people are genetically (由基因决定地) likely to suffer from anxiety and could lead to new treatments, U．S. researchers said.

They said highly anxious rats which were kept had very low levels of a brain chemical called fibroblast growth factor 2 or FGF2, compared with rats that were more relaxed. But when they improved the anxious rats' living conditions—giving them new toys to explore and a bigger cage to live in—levels of this brain chemical increased and they became less anxious.

“The levels of this brain chemical increased in response to the experiences that the rats were exposed to. It also decreased their anxiety.”Javier Perez of the University o f Michigan said in a telephone interview. “It made them behave the same way as the rats that were relaxed，”he said.

In a former study of people who were severely depressed before they died, the team found the gene that makes FGF2 was producing very low levels of the growth factor, which is known primarily for organizing the brain during development and repairing it after injury.

Perez thinks the brain chemical may be a marker for genetic vulnerability (脆弱性) to anxiety and depression. But it can also respond to changes in the environment in a positive way, possibly by preserving new brain cells.

While both the calm and anxious rats produced the same number of new brain cells, these cells were less likely to survive in the high－anxiety rats, the team found. Giving the rats better living conditions or injecting them with FGF2 helped improve cell survival.

“This discovery may pave the way for new, more specific treatments for anxiety that will not be based on sedation(药物镇静), but will instead fight the real cause of the disease，” Dr. Pier Vincenzo Piazza from France said in a statement.

6. We know from the passage that with the levels of FGF2 decreasing, the rats will ________.

A. die of anxiety soon B. suffer from a headache

C. become more relaxed D. become more anxious

7. What's the better way to increase the levels of FGF2?

A. Introducing more companions to the anxious rats.

B. Improving the living conditions of the anxious rats.

C. Injecting the anxious rats with some special medicine.

D. Giving the anxious rats more time to relax.

8. The underlined word “it” in Paragraph 4 refers to ________.

A. the team B. the gene

C. the growth factor D. the brain

9. What's the main influence of the new discovery?

A. Doctors won't use any medicine to cure anxiety.

B. Doctors may treat anxiety more efficiently.

C. Doctors will find the real cause of anxiety.

D. Doctors may find new medicine for anxiety.

10. Which of the following would be the most suitable title for the passage?

A. Anxious rats and relaxed rats

B. Anxiety—a serious mental disease

C. Scientific research into the brain is important

D. Brain chemical may play key role in anxiety

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【小题2】Young people are not ____________(满足) to stand and look at works of art; they want art they can participate in.
【小题3】Is English a ____________ (必修) subject in your school?
【小题4】I had a holiday in America for a ____________ (两周) last year.
【小题5】Both poets drew their ____________ (灵感) from the countryside.
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【小题7】We are so disappointed that he gave us an ____________ (模棱两可的) answer.
【小题8】As a result, the government has strengthened r__________________ protecting these historic sites.
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