閱讀理解

　　Far from the land of Antarctica, a huge shelf of ice meets the ocean．At the underside of the shelf there lives a small fish, the Antarctic cod．

　　For forty years scientists have been curious about that fish．How does it live where most fish would freeze to death? It must have some secret．The Antarctic is not a comfortable place to work and research has been slow．Now it seems we have an answer．

　　Research was begun by cutting holes in the ice and catching the fish．Scientists studied the fish's blood and measured its freezing point．

　　The fish were taken from seawater that had a temperature of－1.88℃ and many tiny pieces of ice floating in it．The blood of the fish did not begin to freeze until its temperature was lowered to－2.05℃．That small difference is enough for the fish to live at the freezing temperature of the ice-salt mixture．

　　The scientists' next research job was clear：Find out what in the fish's blood kept it from freezing．Their search led to some really strange thing made up of a protein(蛋白質(zhì))never before seen in the blood of a fish．When it was removed, the blood froze at seawater temperature．When it was put back, the blood again had its antifreeze quality and a lowered freezing point．

　　Study showed that it is an unusual kind of protein．It has many small sugar molecules(分子)held in special positions within each big protein molecule．Because of its sugar content, it is called a glycoprotein．So it has come to be called the antifreeze fish glycoprotein，or AFGP．

(1)

What is the text mainly about?

[　　]

A．

The terrible conditions in the Antarctic．

B．

A special fish living in freezing waters．

C．

The ice shelf around Antarctica．

D．

Protection of the Antarctic cod．

(2)

Why can the Antarctic cod live at the freezing temperature?

[　　]

A．

The seawater has a temperature of－1.88℃．

B．

It loves to live in the ice-salt mixture．

C．

A special protein keeps it from freezing．

D．

Its blood has a temperature lower than－2.05℃．

(3)

What does the underlined word“it”in Paragraph 5 refer to?

[　　]

A．

A type of ice-salt mixture．

B．

A newly found protein．

C．

Fish blood．

D．

Sugar molecule．

(4)

What does“glycol-”in the underlined word“glycoprotein”in the last paragraph mean?

[　　]

A．

sugar

B．

ice

C．

blood

D．

molecule

答案：1．B;2．C;3．B;4．A;
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閱讀理解:閱讀下列短文, 從所給的四個選項中, 選出最佳答案。 

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科目：高中英語 來源： 題型：053

閱讀理解：

閱讀 下列短文，從所給的四個選項中，選出最佳答案。

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[　　]

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A． cold and relatively dry

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閱讀理解

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(1)

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[　　]

A．

he lost interest in school

B．

he hated those teachers who considered him a problem

C．

he had already understood what he was taught

D．

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[　　]

A．

he can do whatever he likes

B．

he will no longer be considered to be a troublemaker or rebel

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he will certainly take part in a special education program

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[　　]

A．

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design and support special education programs for gifted children

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they take part in traditional education programs

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their unusual abilities are not recognized

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閱讀理解

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(1)

By saying “the growth of the proportion of people over 50 had reversed the traditional

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[　　]

A．

currently wealth flows from old generation to younger generation

B．

traditionally wealth flows from younger generation to old generation

C．

with the increasingly big population of over 50, the trend arises that wealth flows

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with more and more people of over 50, traditions have been reversed

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Why are today's older middle-aged and elderly becoming the new winners?

[　　]

A．

Because they made relatively small contributions in tax, but younger generation will possibly hand over more than a third of their lifetime's earnings for the care of them．

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Because they contributed a lot in tax and now can claim much on the welfare system．

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Because they made small contributions, but now can make money easily．

D．

Because they outnumber(在數(shù)量上超過)younger generation and enjoy more privileges in the present society．

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A．

Many young men, who live alone, have increased demand for houses．

B．

Many young men need to rent more houses．

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It is easy to apply for a mortgage for young generation．

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The number of older people, many of whom live alone, becomes bigger and bigger．

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We can conclude from the passage that ________．

[　　]

A．

today's under-thirties are leading a miserable life in Britain

B．

Laura Lenox-Conyngham's attitude to work and life represents that of many young professionals in Britain

C．

life can get harder for under-thirties in Britain

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閱讀理解

　　So far, scientists have named about 1.8 million living species(物種), and that’s just a small part of what probably exists on Earth．With so many plants, animals, fungi, and other organisms covering the planet, it can be tough to figure out what type of spider is crawling up your leg or what kind of bird just flew by．

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(1)

What is implied in the last sentence of Paragraph 1?

[　　]

A．

No one can become an expert on spiders and birds．

B．

So many spiders have crawled up your leg

C．

There are far more than 1.8 million living species．

D．

Scientists have named a lot of living species

(2)

Which of the following statements is TRUE?

[　　]

A．

You can find information of all living species online in 2017．

B．

Nonscientists will be able to add their own notes to the website．

C．

The kids preparing school reports can not have access to the informat’0 n’

D．

You are not free to choose the amount of detailed information．

(3)

What does the underlined word“novice”probably mean in Paragraph 5?

[　　]

A．

Beginner．

B．

Specialist．

C．

Scientist．

D．

Pupil．

(4)

Who are the intended readers of this passage?

[　　]

A．

Students．

B．

Researchers．

C．

Bird watchers or Gardeners．

D．

People in general

(5)

What is the best title for the passage?

[　　]

A．

Exploring Polar Bears

B．

Visit Our Website Now

C．

How to Do School Projects

D．

E-book of Life．

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