When we see well, we do not think about our eyes very often. It is only when we cannot see perfectly that we realize how important our eyes are.
People who are near-sighted can only see things that are very close to their eyes. Everything else seems blurry. Many people who do a lot of work, such as writing, reading and sewing become near-sighted. People who are far-sighted suffer from just the opposite problem. They can see things that are far away, but they have difficulty in reading a book unless they hold it at arm’s length. If they want to do much reading, they must get glasses, too.
Other people do not see clearly because their eyes are not exactly the right shape. They have what is called astigmatism (散光). This, too, can be corrected by glasses. Some people’s eyes become cloudy because of cataracts (白內(nèi)障). Long ago these people often became blind. Now, however, it is possible to operate on the cataracts and remove them.
Having two good eyes is important for judging distances. Each eye sees things from a slightly different angle. To prove this to yourself, look at an object out of one eye; then look at the same object out of your other eye. You will find the object’s relation to the background and other things around it has changed. The difference between these two different eye views helps us to judge how far away an object is. People who have only one eye cannot judge distances as people with two eyes.
【小題1】We should take good care of our eyes________.     .

A．only when we can see well
B．only when we cannot see perfectly
C．even if we can see wel
D．only when we realize how important our eyes are
【小題2】When things far away seem indistinct(模糊不清) , one is probably________.     .
A．near-sightedB．far-sighted
C．a(chǎn)stigmaticD．suffering from cataracts
【小題3】The underlined word blurry in the second paragraph probably means_______.
A．obviousB．possibleC．clearD．unclear
【小題4】Having two eyes instead of one is particularly useful for_______   
A．seeing at nightB．seeing objects far away
C．looking over a wide area D．judging distances


【小題1】C
【小題2】A
【小題3】D
【小題4】D

解析

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科目：高中英語 來源：河北省邢臺(tái)一中2011－2012學(xué)年高二下學(xué)期第四次月考英語試題 題型：050

閱讀理解

　　We have met the enemy and he i s our s．We bought him at a pet shop．When monkey-pox, a di sea se u sually found in the African rain fore st suddenly turn s up in children in the American Midwe st, it' s hard not to wonder of the di sea se that come s from foreign animal s i s homing in on human being s．“Mo st of the infection s we think of a s human infection s started in other animal s, ” say s Stephen Mor se, director of the Center for Public Health Preparedne s s at Columbia Univer sity．

　　It' s not ju st that we're going to where the animal s are; we're al so bringing them clo ser to u s．Popular foreign pet s have brought a whole new di sea se to thi s country．A strange illne s s killed I sak sen' s pet s and she now think s that keeping foreign pet s i s a bad idea, “I don't think it' s fair to have them a s pet s when we have such alimited knowledge of them．” say s I sak sen．

　　“Law s allowing the se animal s to be brought in from deep fore st area s without stricter control need changing．” say s Peter Schantz．Monkey-pox may be the wake-up call．Re searcher s believe infected animal s may infect their owner s．We know very little about the se new di sea se s．A new bug(病毒)may be kind at fir st．But it may develop into something harmful．Monkey-pox doe sn't look a major infectiou s di sea se．But it i s not impo s sible to pa s s the di sea se from per son to per son．

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[　　]

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suffer from monkey-pox

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Why did I sak sen advi se people not to have foreign pet s?

[　　]

A．

Becau se they attack human being s．

B．

Becau se we need to study native animal s．

C．

Becau se they can't live out of the rain fore st．

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Becau se we do not know much about them yet．

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What doe s the phra se “the wake－up call” in Paragraph 3 mo st probably mean?

[　　]

A．

A new di sea se．

B．

A clear warning．

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A dangerou s animal．

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A morning call．

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