题目内容

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.

60. 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

61.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

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

A. obvious　　　 B. possible　　 C. clear　　 D. unclear

63. 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

CADD     

练习册系列答案
相关题目

阅读理解

　　We have met the enemy and he i s our s．We bought him at a pet shop．When monkey-pox, a di sea se u sually found in the African rain fore st suddenly turn s up in children in the American Midwe st, it' s hard not to wonder of the di sea se that come s from foreign animal s i s homing in on human being s．“Mo st of the infection s we think of a s human infection s started in other animal s, ” say s Stephen Mor se, director of the Center for Public Health Preparedne s s at Columbia Univer sity．

　　It' s not ju st that we're going to where the animal s are; we're al so bringing them clo ser to u s．Popular foreign pet s have brought a whole new di sea se to thi s country．A strange illne s s killed I sak sen' s pet s and she now think s that keeping foreign pet s i s a bad idea, “I don't think it' s fair to have them a s pet s when we have such alimited knowledge of them．” say s I sak sen．

　　“Law s allowing the se animal s to be brought in from deep fore st area s without stricter control need changing．” say s Peter Schantz．Monkey-pox may be the wake-up call．Re searcher s believe infected animal s may infect their owner s．We know very little about the se new di sea se s．A new bug(病毒)may be kind at fir st．But it may develop into something harmful．Monkey-pox doe sn't look a major infectiou s di sea se．But it i s not impo s sible to pa s s the di sea se from per son to per son．

(1)

We learn from Paragraph 1 that the pet sold at the shop may ________．

[　　]

A．

come from Columbia

B．

prevent u s from being infected

C．

enjoy being with children

D．

suffer from monkey-pox

(2)

Why did I sak sen advi se people not to have foreign pet s?

[　　]

A．

Becau se they attack human being s．

B．

Becau se we need to study native animal s．

C．

Becau se they can't live out of the rain fore st．

D．

Becau se we do not know much about them yet．

(3)

What doe s the phra se “the wake－up call” in Paragraph 3 mo st probably mean?

[　　]

A．

A new di sea se．

B．

A clear warning．

C．

A dangerou s animal．

D．

A morning call．

短文改错（共10小题；每小题1分，满分10分）

此题要求改正所给短文中的错误．对标题号的每一行做出判断：如无错误，在该行右边的横线上划（√）；如有错误（每行只有一个错误），则按下列情况改正：

此行多一个词：把多余的词用斜线划掉，在该行右边横线上写出该词，并也用斜线划掉。

此行缺一个词：在缺词处加一个漏字符号（^），在该行右边横线上写出该加的词。

此行错一个词：在错的词下划一横线，在该行右边横线上写出改正后的词。

Time is valuable but limit. There’s a famous saying,

“Time is money”, this shows the importance of time. When    

time has gone, it will never  return back. It is a pity          

when many people make poor u se of time. They spend their         

precious time oversleeping, drinking and traveling. We don’t        

realized wasting time equal to wasting part of their life.         

They always regret having made a little achievement so far.           

Therefore, we should form the habit of value time. Do not       

put off what can be done today until tomorrow. Lazy                    

will not only bring us failure, but also lead us on the road             

of poverty and even death.                                       

短文改错（共10小题；每小题1分，满分10分）
此题要求改正所给短文中的错误．对标题号的每一行做出判断：如无错误，在该行右边的横线上划（√）；如有错误（每行只有一个错误），则按下列情况改正：
此行多一个词：把多余的词用斜线划掉，在该行右边横线上写出该词，并也用斜线划掉。
此行缺一个词：在缺词处加一个漏字符号（^），在该行右边横线上写出该加的词。
此行错一个词：在错的词下划一横线，在该行右边横线上写出改正后的词。
Time is valuable but limit. There’s a famous saying,
“Time is money”, this shows the importance of time. When  【小题1】 
time has gone, it will never  return back. It is a pity        【小题2】  
when many people make poor u se of time. They spend their    【小题3】    
precious time oversleeping, drinking and traveling. We don’t   【小题4】    
realized wasting time equal to wasting part of their life.        【小题5】
They always regret having made a little achievement so far.     【小题6】     
Therefore, we should form the habit of value time. Do not      【小题7】 
put off what can be done today until tomorrow. Lazy                【小题8】   
will not only bring us failure, but also lead us on the road       【小题9】      
of poverty and even death.                                   【小题10】   

短文改错（共10小题；每小题1分，满分10分）

此题要求改正所给短文中的错误．对标题号的每一行做出判断：如无错误，在该行右边的横线上划（√）；如有错误（每行只有一个错误），则按下列情况改正：

此行多一个词：把多余的词用斜线划掉，在该行右边横线上写出该词，并也用斜线划掉。

此行缺一个词：在缺词处加一个漏字符号（^），在该行右边横线上写出该加的词。

此行错一个词：在错的词下划一横线，在该行右边横线上写出改正后的词。

Time is valuable but limit. There’s a famous saying,

“Time is money”, this shows the importance of time. When   1. 

time has gone, it will never  return back. It is a pity        2.  

when many people make poor u se of time. They spend their     3.    

precious time oversleeping, drinking and traveling. We don’t    4.    

realized wasting time equal to wasting part of their life.         5.

They always regret having made a little achievement so far.      6.     

Therefore, we should form the habit of value time. Do not      7. 

put off what can be done today until tomorrow. Lazy                 8.   

will not only bring us failure, but also lead us on the road       9.      

of poverty and even death.                                    10.   

 
阅读理解
     When you see geese flying along in V formation, you might consider what science has discovered
as to why they fly that way.
     As each bird flaps wings, it creates an uplift for the bird immediately following. By flying in V
formation, the whole flock at least 71 per cent greater flying range than if each bird flew on its own.
Individuals who share a common direction and sense of community can get where they are going more
quickly and easily because they are travelling on the pushing force of one another.
     When a god se falls out of formation, it suddenly feels the drag and resistance of trying to go it alone,
and quickly gets back into formation to take advantage of the lifting power of the bird in front. If we
have as much sense as a goose, we will stay in formation with those people who are headed the same
way we are.
     When the head goose gets tired, it moves back in the formation and another goose flies point. It is
sensible to take turns doing demanding jobs, whether with people or with geese flying south.
     Geese honk from behind to encourage those up front to keep up their speed. What messages do
we give when we honk from behind?
     Finally -and this is important -when a goose gets sick or is wounded by gunshot, and falls out of
formation, two other geese fall out with that goose and follow it down to lend help and protection.
They stay with the fallen goose until it is able to fly or until it dies, and only then do they launch out on
their own, or with another formation, to catch up with their group.
     If we have the sense of a goose, we will stand by each other like that.
1. By flying in "V" formation, a goose can ______.
A. learn who leads the group         
B. see the direction ahead clearly
C. fly at a higher speed and reach a further place    
D. greatly reduce the risk of being hit by gunshots
2. What does the underlined word "honk" mean?
A. To fly.   
B. To move.  
C. To cry.          
D. To fight.
3. Which of the following is NOT suggested in the text?
A. We should be united as one to achieve a common goal.
B. We should work together with those who share our dream.
C. We should take our share of responsibility in a huge task.
D. We should encourage those falling behind to keep on trying.
4. What's the main purpose of the text?
A. To encourage us to learn from geese.
B. To announce some new findings about geese.
C. To prove the similarities between humans and geese.
D. To persuade us to find more about life of geese.

违法和不良信息举报电话：027-86699610 举报邮箱：58377363@163.com

精英家教网