5.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 unclear.Many people who do a lot of work,such as writing,reading and sewing become near-sighted.
Then people who are far-sighted endurejust 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 then.
Having two good eyes is important for judging distances.Each eye sees things from a slightly different angle(角度).To prove this to yourself,look at an object out of one eye; then look at the same object our 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 distance as people with two eyes.
61.We should take good care of our eyesD.
A.only when we can see well
B.only when we cannot see perfectly
C.only when we are near-sighted or far-sighted
D.even if we can see well or perfectly
62.When things far away seem unclear,one is probablyA.
A.near-sighted B.far-sighted C.a(chǎn)stigmatic D.suffering from cataracts
63.The underlined word endurein the third paragraph probably meansD.
A.experience B.imagine C.suffer from D.recover from
64. Having two eyes instead of one is particularly useful forD.
A.seeing at night
B.seeing objects far away
C.looking over a wide area
D.judging distances
65.People who suffer from astigmatism haveB.
A.one eye bigger than the other
B.eyes that are not exactly the right shape
C.a(chǎn) difficulty that can be corrected by an operation
D.a(chǎn)n eye difficult that cannot be corrected by glasses.
分析 眼睛是心靈的窗戶,我們應該保護好我們的眼睛.
解答 61.D 推理判斷題.根據(jù)第一段"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."可知,視力正常的時候,人們很少考慮到自己的眼睛,只有看不太清晰的時候,才意識到眼睛的重要性.作者暗含的意思是,呼吁讀者平時多注意保護眼睛,即使是在視力正常的時候.故選D.
62.A 細節(jié)理解題.根據(jù)第二段"People who are near-sighted can only see things that are very close to their eyes."可知,近視的人,只能看清近處的東西,而不能看清遠處的.故選A.
63.C 猜測詞義題.根據(jù)"Then people who are far-sighted endure just the opposite problem."可知,患有遠視的人,忍受與近視正好相反的問題.A經(jīng)歷;B想象;C遭受;D從…中恢復,故選C.
64.D 細節(jié)理解題.根據(jù)最后一段"Having two good eyes is important for judging distances…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 distance as people with two eyes."可知,擁有兩只眼睛能幫助人們更好地辨別距離,故選D.
65.B 細節(jié)理解題.根據(jù)第四段"Other people do not see clearly because their eyes are not exactly the right shape.They have what is called astigmatism(散光)."可知,患有散光的人,他們的眼睛形狀不正常,故選B.
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