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.

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

2.When things far away seem indistinct(模糊不清) , one is probably________.     .

A．near-sighted

B．far-sighted

C．a(chǎn)stigmatic

D．suffering from cataracts

3.The underlined word blurry in the second paragraph probably means_______.

A．obvious

B．possible

C．clear

D．unclear

4.Having two eyes instead of one is particularly useful for_______   

A．seeing at night

B．seeing objects far away

C．looking over a wide area

D．judging distances

 

【答案】

1.C

2.A

3.D

4.D

【解析】眼睛是心靈的窗戶，我們應(yīng)該保護(hù)好我們的眼睛。

1.推理題。根據(jù)文章第一段內(nèi)容可知很多人看得見的時候不重視對眼睛的保護(hù)，只是到了眼睛出了問題的時候才意識到眼睛的重要性，那么C正確。即使我們能看見，我們也要照顧好我們的眼睛。

2.推理題。根據(jù)文章第2段第一句People who are near-sighted can only see things that are very close to their eyes.可知當(dāng)看遠(yuǎn)處的東西模糊不清的時候，我們應(yīng)該是患了近視。

3.猜測詞義題。根據(jù)上文的can only see things that are very close to their eyes.可知是指遠(yuǎn)處的東西看起來都很模糊不清。D正確。

4.推理題。根據(jù)文章最后兩句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.可知兩只眼睛對于判斷距離很重要。

 

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