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________ we take measures to solve the problem can we avoid a serious water shortage in the future.


  1. A.
    If only
  2. B.
    Only if
  3. C.
    When
  4. D.
    As long as
B
从句后的主句用的是倒装语序,选项中只有only if才能引起倒装。
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科目:高中英语 来源:2015届江苏郑梁梅中学高一下期期末考试英语卷(解析版) 题型:阅读理解

When an ant dies, other ants take it out of the nest, often within an hour after its death. This behavior interests scientists and they wonder how ants know for sure—and so soon—that another ant is dead.

One scientist recently came up with a way to explain this ant behaviour. Dong-Hwan Choe is a biologist, a scientist who studies animals and plants. He found that ants have a chemical on the outside of their bodies that signals to other ants, “I'm dead—take me away” when it is dead.

But there's a question to answer: As we know, if an ant is dead, it stops moving. But when an ant is sleeping or knocked unconscious, it is also not moving. However, other ants don't move the living ant out of the nest. How do they know this ant is not dead? Choe found that ants have another chemical on their bodies, which tells nearby ants something like, “Wait—I'm not dead yet” when it is not dead. Choe suspects that when an ant dies, the chemical that says, “Wait I'm not dead yet” quickly goes away. When other ants detect the “dead” chemical without the “not dead yet” chemical, they move away the body.

To test his theory , Choe and his team put different chemicals on ants. When the scientists used the “I'm dead” chemical, other ants quickly moved the treated ant away. When the scientists used the “Wait—I'm not dead yet” chemical, other ants left the treated ant alone. Choe believes this behavior shows that the “not dead yet” chemical overrides the “dead” chemical when picked up by other ants. And that when an ant dies, the “not dead yet” chemical fades away. Other nearby ants then detect the remaining “dead” chemical and remove the body from the nest.

Understanding this behavior can help scientists figure out how to stop ants from invading new places and causing problems.

1.What is the function of the first paragraph?

A. Leading the following paragraphs.

B. Showing the main idea of the passage.

C. Introducing the background of the passage.

D. Giving a summary of the passage.

2.Which of the following has the closest meaning to the underlined word “overrides” in the fourth paragraph?

A. is weaker than        B. is stronger than

C. is better than    D. is worse than

3.What can we learn from the passage?

A. Living ants can also be taken away when they are not moving.

B. When an ant dies, it can tell others using a certain chemical.

C. A living ant can pretend to be dead using a special chemical.

D. Ants often use chemicals to communicate with each other.

4.Which of the following descriptions about Dong-Hwan Choe is right?

A. Choe did this study in order to stop ants from invading new places.

B. Choe is a biologist who is only interested in animals, especially in ants.

C. Choe first came up with an idea to explain this ant behavior,and then did some tests to prove his theory.

D. Choe did the research on this ant behavior on his own

 

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科目:高中英语 来源:2014届浙江省高一下学期期末考试英语试卷(解析版) 题型:完型填空

There are many different ways of seeing a town for the first time. One of them is to walk around it, guide-book  26  hand. Of course, we may  27  with our guide-books the history and  28  developments of a town and get to know them.

 29  then, if we take our time and  30  in a town for a while, we may get to know it better. When we  31  it as a whole, we begin to have some  32 , which even the best guide-books do not

answer. Why is the town just  33  this —— this shape, this plan, this size? Why do its streets  34  in this particular way, and not in any  35  way?

Here even the best guide-book  36  us. One can’t find the information in it about how a town has developed to the  37  appearance. It may not describe the original  38  of a town. However, one may get some idea of what it  39  look like by walking around the town. One can also imagine  40  the town was first planned and built. Then one can learn more about in what direction the town  41  to develop.

What is the  42  of studying towns in this way?For me, it is  43  a matter that one gets a greater depth of pleasure by visiting and seeing a town with one’s own eyes. A  44  visit to a town may help one better understand why it is attractive  45  just reading about it in a guide-book.

1.

A.in

B.at

C.by

D.on

 

2.

A.write

B.study

C.tell

D.remember

 

3.

A.strange

B.similar

C.separate

D.special

 

4.

A.But

B.Before

C.Since

D.Until

 

5.

A.march

B.work

C.stay

D.wait

 

6.

A.look at

B.1ook after

C.1ook for

D.1ook up

 

7.

A.ideas

B.opinions

C.feelings

D.questions

 

8.

A.of

B.for

C.1ike

D.as

 

9.

A.open

B.run

C.begin

D.move

 

10.

A.one

B.more

C.other

D.such

 

11.

A.helps

B.tricks

C.fails

D.satisfies

 

12.

A.old

B.normal

C.first

D.present

 

13.

A.capital

B.meaning

C.design

D.change

 

14.

A.used to

B.seemed to

C.had to

D.happened to

 

15.

A.what

B.how

C.when

D.where

 

16.

A.stops

B.appears

C.starts

D.continues

 

17.

A.point

B.view

C.problem

D.difficulty

 

18.

A.nearly

B.simply

C.generally

D.hardly

 

19.

A.costly

B.formal

C.group

D.personal

 

20.

A.from

B.than

C.through

D.with

 

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科目:高中英语 来源:2010-2011学年黑龙江大庆实验中学高三考前得分训练三 题型:阅读理解

How many people have I met who have told me about the book they have been planning to write but have never yet found the time ? Far too many.

    This is Life, all right, but we do treat it like a rehearsal (排演) and, unhappily, we do miss so many of its best moments.

    We take jobs to stay alive and provide homes for our families always making ourselves believe that this style of life is merely a temporary state of affairs along the road to what we really want to do. Then, at 60 or 65, we are suddenly presented with a clock and several grandchildren and we look back and realize that all those years waiting for Real Life to come along were in fact real life.

    In  America they have a saying much laughed at by the English:“Have a nice day” they speak slowly and seriously in their shops, hotels and sandwich bars. I think it is a wonderful phrase, reminding us, in effect, to enjoy the moment: to value this very day.

    How often do we say to ourselves, "I'll take up horse-riding (or golf, or sailing) as soon as I get a higher position," only to do none of those things when I do get the higher position.

    When I first became a reporter I knew a man who gave up a very well paid respectable job at the Daily Telegraph to go and edit a small weekly newspaper. At the time I was astonished by what appeared to me to be his completely abnormal (反常的) mental state. How could anyone turn his back on Fleet Street in central London for a small local area?I wanted to know.

    Now I am a little older and possibly wiser, I see the sense in it. In Fleet Street the man was under continual pressure. He lived in an unattractive London suburb and he spent much of his life sitting on Southern Region trains.

1.

 The first paragraph of the passage tells us that          .

A. we always try to find some time to write a book

B. we always make plans but seldom fulfill them

C. we always enjoy many of life's best moments

D. we always do what we really want to do

2.

 The underlined phrase "turn his back on" (paragraph 6) most probably means         .

A. leave for           B. return to           C. give up           D. rely on

3.

 The man ( paragraph 6) left his first job partly because he was           .

A. in an abnormal mental state                B. under too much pressure

C. not well paid                            D. not respected

4.

 What is probably the best title for the passage?

A. Provide Homes For Our Family             B. Take Up Horse-riding

C. Value This Very Day                      D. Stay Alive

 

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科目:高中英语 来源:2010-2011学年浙江省高三上学期第一次月考英语卷 题型:阅读理解

Imagine that the genome (基因组) is a book. The book consists of 23 chapters with thousands of stories made up of paragraphs, words and letters on different levels. There are one billion words in the book, which makes it longer than 5,000 volumes the size of this book, or as long as 800 Bibles. If I read the genome out to you at the rate of one word per second for eight hours a day, it would take me a century. If I wrote out the human genome, one letter per millimeter, my text would be as long as the River Danube. This is an enormous document. A huge volume, a cook book of great length, and it all fits inside the extremely small nucleus (核) of a tiny cell that fits easily upon the head of a pin.

The idea of the genome as a book is not, strictly speaking, even a metaphor (比喻), It is true to a great extent. A book is a piece of digital information, written in one-directional form and defined by a code that translates a small alphabet of letters into a large dictionary of meanings through the order of their groupings. So is a genome. The only complication is that all English books read from left to right, while some parts of the genome read from left to right, and some from right to left, though never both at the same time.

While English books are written in words of different lengths using twenty-six letters. Genomes are written entirely in three-letter words, using only four letters, And instead of being written on flat pages, they are written on long chains of DNA molecules (分子), The genome is a very clever book, because in the right conditions it can both photocopy itself and read itself.

1.How do human genomes read according to the passage?

       A. Only from left to right.    B. Only from right to left.

       C. From both directions at the same time   D. From one direction at a time

2.We can learn from the passage that the human genome ______.

       A. is as long as the River Danube

       B. can be easily placed on the head of a pin

       C. is coded with and alphabet of four letters

       D. is smart enough to read and take photos of itself

3.It can be concluded that the passage is mainly written for ______.

       A. specialists in the field      B. general readers

       C. natural scientists        D. readers with academic background

4.The real purpose of the author’s comparison of the genome to a book is ______.

       A. to focus on the differences between the two

       B. to lay emphasis on the similarities between the two

       C. to simplify the concept of the human genome

       D. to give an exact description of the human genome

 

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科目:高中英语 来源:2010-2011学年济南市高三教学质量调研英语试题(A) 题型:完型填空

When I was young, I belonged to a club that did community service work. There was one specific  36  that was unusual for me. I spent three or four hours handing out warm dinner to the homeless   37   in the streets. After that I went to a homeless shelter not far from the Bay Bridge.

I was in high school and at the time my sister was too young to   38   . She wanted to help,   39  she made many chocolate chip cookies for me to  40   and hand out to people. When getting to the shelter, I passed out the   41   . I began making sandwiches and   42    them with the crowd. I had the containers with my sister’s   43    in them and began to   44    around, offering them to anyone near me.

I approached an   45   gentleman and said, “ Sir, would you like a cookie?” He stopped and turned around, looked at me and said, “What did you say? Did you call me sir?” I told him I had, and his eyes   46    a little bit and said, “ No one has   47    called me sir.’ So he was completely moved.

It   48    me.

I explained I had been raised that   49    color and social status, everyone deserved respect. It   50    me to think that just because he was homeless, no one   51    him the honor. It broke my heart. I just didn’t understand   52    no one ever called him sir. I had never thought that anyone was below me because I wasn’t raised that way. Every   53    person deserves to be treated with respect. Years later, I still carry that memory and the   54    it taught me. Sometimes, what we take for granted can    55    make a difference in someone’s life.

1.A. case                      B. chance                          C. event                   D. accident

2.A. out                                B. far                                 C. away                    D. off

3.A. participate            B. decide                           C. choose               D. go

4.A. however                   B. but                                 C. yet                        D. so

5.A. enjoy                         B. eat                                C. collect                 D. take

6.A. papers                            B. meals                          C. books                    D. gifts

7.A. shared                      B. provided            C. helped                 D. returned

8.A. dishes              B. fruits                     C. cookies                 D. sandwiches

9.A. walk                B. turn                      C. run              D. show

10.A. well-dressed         B. innocent                       C. old                        D. modest

11.A. watered                 B. cried                              C. opened              D. closed

12.A. never                          B. ever                               C. still                       D. yet

13.A. encouraged            B. attracted                     C. struck                    D. defeated

14.A. in spite of                B. regardless of                C. in case of        D. because of

15.A. persuaded         B. saddened                     C. frightened          D. moved

16.A. handed                   B. offered                         C. reminded            D. promised

17.A. what                       B. how                            C. whether              D. why

18.A. single                      B. usual                             C. ordinary             D. normal

19.A. lesson                     B. class                              C. truth                     D. reality

20.A. possibly                  B. nearly                           C. really                      D. usually

 

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