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 bee 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 bee cloudy because of cataracts (白内障). 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.
【小题1】We should take good care of our eyes . .A．only when we can see wellB．only when we cannot see perfectlyC．even if we can see welD．only when we realize how important our eyes are【小题2】When things far away seem indistinct(模糊不清) , one is probably . .A．near-sightedB．far-sightedC．astigmaticD．suffering from cataracts【小题3】The underlined word blurry in the second paragraph probably means .A．obviousB．possibleC．clearD．unclear【小题4】Having two eyes instead of one is particularly useful for A．seeing at nightB．seeing objects far awayC．looking over a wide area D．judging distancesC
网友回答
(答案→)C
解析：眼睛是心灵的窗户，我们应该保护好我们的眼睛。
【小题1】推理题。根据文章第一段内容可知很多人看得见的时候不重视对眼睛的保护，只是到了眼睛出了问题的时候才意识到眼睛的重要性，那么C正确。即使我们能看见，我们也要照顾好我们的眼睛。
【小题2】推理题。根据文章第2段第一句People who are near-sighted can only see things that are very close to their eyes.可知当看远处的东西模糊不清的时候，我们应该是患了近视。
【小题3】猜测词义题。根据上文的can only see things that are very close to their eyes.可知是指远处的东西看起来都很模糊不清。D正确。
【小题4】推理题。根据文章最后两句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.可知两只眼睛对于判断距离很重要。