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 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 distance as people with two eyes.

　　68. 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 well.

　　D. only when we realize how important our eyes are

　　69. People who suffer from astigmatism have______.

　　.

　　A. one eye bigger than the other

　　B. eyes that are not exactly the right shape

　　C. a difficulty that can be corrected by an operation

　　D. an eye difficulty that cannot be corrected by glasses

　　70. When things far away seem indistinct(模糊不清) , one is probably____.

　　.

　　A. near-sighted

　　B. far-sighted

　　C. astigmatic

　　D. suffering from cataracts

　　71. Having two eyes instead of one is particularly useful for _____.

【安徽省怀远县包集中学2017-2017学年高一上学期期中考试 英语试题 Word版含答案】相关文章：

★ 湖南省常德市淮阳中学2017-2017学年高一上学期期中考试英语试题

★ 江苏省连云港市赣榆县海头高级中学2015届高三上学期期中考试英语试卷 Word版含答案

★ 重庆复旦中学2014-2015学年高一上学期期中考试试卷 英语 Word版含答案

★ 山东省济南市2017届高三一模考试英语试卷（无答案）

★ 辽宁省沈阳二中2017-2017学年高一上学期期中考试英语试题

★ 海南省海南中学2017-2017学年高一上学期期中考试试卷 英语（含听力） Word版含答案

★ 四川省成都外国语学校2017-2017学年高一上学期期中考试试卷 英语 word版含答案

★ 安徽省池州一中2017-2017学年高一上学期期中考试英语试题（无答案）

★ 四川省古蔺县中学2017-2017学年高一上学期期中考试英语试题

★ 河南师大附中2017-2017学年高一上学期期中考试英语试题