首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
专升本
When we see well, we do not think about our eyes very often. (79) It is only when we cannot see perfectly that we realize how im
When we see well, we do not think about our eyes very often. (79) It is only when we cannot see perfectly that we realize how im
admin
2011-03-26
32
问题
When we see well, we do not think about our eyes very often. (79)
It is only when we cannot see perfectly that we realize how important our eyes are.
People who are nearsighted can only see things that are very close to their eyes. Everything else seems blurry (模糊的). Many people who do a lot of close work, such as writing, reading and sewing, become nearsighted. Then they have to wear glasses in order to see distant objects clearly.
People who are farsighted 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 (白内障). Long ago these people olden 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 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.
People who suffer from astigmatism ______.
选项
A、have an eye difficulty that cannot be corrected by glasses
B、have eyes that are not exactly the right shape
C、have a difficulty that can be corrected by an operation
D、have a curable disease in their eyes
答案
B
解析
见第4段句子“Other people do not see clearly because their eyes are not exactly the right shape.They have what is called astigmatism(散光).”。
转载请注明原文地址:https://kaotiyun.com/show/Q1qC777K
本试题收录于:
英语题库成考专升本分类
0
英语
成考专升本
相关试题推荐
下列句子中的“则”表示顺承关系的是()
阅读作品片段,然后回答问题:听他们谈了许多,我心中有点忧郁起来了。这些不辜负自然的人,与自然妥协,对历史毫无担负,活在这无人知道的地方。另外尚有一些人,与自然毫不妥协,想出种种方法来支配自然,违反自然的习惯。同样也那么尽寒暑交替,看日月升降。然而
Insteadofresearchingandwritingtheirpapers,somestudents______.Ifteacherswanttofindoutiftheirstudentswrotethe
Forthispart,youaresupposedtowriteashortessayinabout100-120wordsbasedonthefollowingsituation.描写发生在你或你的朋友身
Itriedtogetoutofthebusiness,(我发现这是不可能的).
Before1914femalesecretarieswererarebecausethey______.Afemalesecretaryhasbeenexpected,besidesotherduties,to__
Johnpromisedtokeephismother______ofhowthingsweregoingonwhenhestudiedinEngland.
HolidaycelebrationsintheUnitedStatesoften______.Mary’sbirthmother______.
Whatapitythattheydon’trealizetheentireeventhadbeenarrangedfortheir______(convenient).
Alltheusefulenergyatthesurfaceoftheearthcomesfromtheactivityofthesun.Thesunheatsandfeedsmankind.Eachyear
随机试题
十进制数字10的BCD码为()。
处于局部受压的砌体,其抗压强度提高是因为:
垃圾填埋场的使用期限较长,达_______年以上。()
财务净现值是评价技术方案盈利能力的()。
在考虑影响公司股价变动的因素时,对于公司经营中的财务状况,常用来衡量其盈利性的指标有()。①每股收益②净资产收益率③杠杆比率④流动比率
(2018年)甲公司的主营业务是生产、销售体育运动器材,从去年起,该公司在保留原有业务的同时寻找新的市场机会,开发出适合个人使用的运动健康补测仪并尝试性投放市场,该仪器可随时把使用者在运动中的有关生物指数显示并记录下来,从而帮助使用者了解自己的健康状况并选
从所给的四个选项中,选择最合适的一个填入问号处,使之呈现一定的规律性。()
体育与健康课程的教学()体现在学生体育与健康知识的掌握、运动技能的习得、体能的增强和学习行为的变化等方面。
领导让你负责一项工作。并安排了一位老同志协助你。但是在工作中大家只服从老同志的安排。你怎么办?
()是国际货币基金组织创造的具有“纸黄金”之称的记账形式,用以充当国际间的支付手段。
最新回复
(
0
)