prevent -- : 防止 ; 单元 3 : 根据词意完成短语并造句: 查看更多

 

题目列表(包括答案和解析)

完形填空

Space is a dangerous place,not only because of meteors(流星)but also because of rays from the sun and other stars.The atmosphere again acts   1   our protective blanket on   2  .Light gets through,and this is essential for   3   to make the food which we   4  .Heat,   5  , makes our environments tolerable and some ultraviolet rays penetrate(穿透)the   6  .Cosmic(宇宙的)rays of various kinds come   7   the air from outer space,but   8   quantities of radiation from the sun are screened off.  9   men leave the   10   they are exposed to this radiation;   11   their spacesuits or the walls of their spacecraft,if they are inside,   12   prevent a lot of radiation damage.Radiation is the greatest known danger to explorers in   13  .Doses(剂量)of radiation are measured in   14   called “rems(雷姆)”.We all   15   radiation here on earth from the sun,from cosmic rays and from radioactive minerals.The “  16  ” dose of radiation that we receive each year is about two millirems;it   17   according to where you live,and this is a very rough estimate.Scientists have reason to think   18   a man can   19   more radiation without being damaged;the figure of 60 rems has been   20  

(1)

[  ]

A.

for

B.

with

C.

on

D.

as

(2)

[  ]

A.

stars

B.

sun

C.

earth

D.

space

(3)

[  ]

A.

people

B.

factories

C.

farmers

D.

plants

(4)

[  ]

A.

use

B.

live

C.

eat

D.

get

(5)

[  ]

A.

again

B.

also

C.

besides

D.

too

(6)

[  ]

A.

environment

B.

space

C.

atmosphere

D.

earth

(7)

[  ]

A.

across

B.

to

C.

from

D.

through

(8)

[  ]

A.

extreme

B.

enormous

C.

various

D.

proper

(9)

[  ]

A.

As soon as

B.

As well as

C.

As much as

D.

As possible as

(10)

[  ]

A.

earth

B.

atmosphere

C.

houses

D.

shelter

(11)

[  ]

A.

but

B.

because

C.

so

D.

so that

(12)

[  ]

A.

get

B.

make

C.

have

D.

do

(13)

[  ]

A.

earth

B.

atmosphere

C.

space

D.

environment

(14)

[  ]

A.

pieces

B.

units

C.

parts

D.

elements

(15)

[  ]

A.

receive

B.

accept

C.

bring

D.

catch

(16)

[  ]

A.

total

B.

common

C.

general

D.

normal

(17)

[  ]

A.

shifts

B.

changes

C.

modifies

D.

varies

(18)

[  ]

A.

what

B.

which

C.

that

D.

why

(19)

[  ]

A.

put up with

B.

keep up with

C.

come up with

D.

catch up with

(20)

[  ]

A.

found

B.

pointed

C.

agreed

D.

described

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语法填空

  Child labor has been a problem for many years.Over a hundred years ago, Charles Dickens shocked many of his readers when he described the conditions   1   which young children worked in British factories.The conditions Dickens described continue, almost unchanged today, in many parts of the world.The only difference is   2   today’s employment of children is confined to small industries and family businesses, such as hotels, restaurants and   3  (particular)farms, rather than to large factories.The children not only receive nothing or very   4   for their long hours of work, but also they   5  (prevent)from attending school.Therefore, when they become older they are   6  (able)to do any other kind of work.

  The solution   7   the problem of child labour is clearly better laws to protect young children greater supervision(监督)of industry and heavier fines for   8   who break the laws.Only in this way   9   young boys and girls be allowed to enjoy the most valuable time of   10   lives-childhood.

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阅读下列短文, 从所给的四个选项中, 选出最佳答案。

       Time is divided into years, months, weeks, days, hours, minutes,   and seconds. Of these seven divisions only two are set by nature, the   year and the day. Every one of the remaining five is an invention of   man and could be changed by man at will. For example, nothing would   prevent us from having a week of five days instead of seven, and then   the weeks would fit into ordinary years without a day over as now. We   could have 20 instead of 24 hours a day, 100 minutes an hour, and 100   seconds a minute. However, the length of the year is fixed by the   earth's revolution (公转) and the length of the day by the earth's   rotation (自转).  

(1) Of these seven divisions _________.

[  ]

A. five are invented by man

B. five are set by nature

C. all are set by man

D. only two are invented by man

(2) A minute ___________.

[  ]

A. is fixed to have sixty seconds forever

B. could have one hundred seconds at man's will

C. is now sixty seconds and cannot be changed into one hundred seconds

D. can be called other names

(3) The year ____________.[  ]

A. is fixed by the revolution of the sun

B. is set by the earth's revolution

C. is an invention of man and it could be changed by him at will

D. cannot be divided into other time units

(4) If a week had five days instead of seven, we could _______.

[  ]

A. have a leap year (闰年) every other year

B. divide an ordinary year into weeks with no days left

C. always have a leap year

D. have no leap year at all

(5) The length of the day ____________.

[  ]

A. is always the same whatever we may call it

B. is not the same in all seasons

C. has something to do with the moon's motion

D. would be changed if we divided it into 20 hours instead of 24

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B
  Men usually want to have their own way.They want to think and act as they like.No one,however,can have his own way all the time.A man cannot live in society without considering the interests of others as well as his own interests."Society" means a group of people with the same laws and the same way of life People in society may make their own decisions,but these decisions ought not to be unjust or harmful to others.One man's decisions may so easily harm another person.For example,a motorist may be in a hurry to get to a friend's house.He sets out,driving at full speed like a competitor in a motor race.There are other vehicles and also pedestrians(步行者) on the road.Suddenly there is a crash.There are screams and confusion.One careless motorist has struck another car.The collision has injured two of the passengers and killed the third.Too many road accidents happen through the thoughtlessness of selfish drivers.
  We have governments,the police and the law courts to prevent or to punish such criminal acts.But in addition,all men ought to observe certain rules of conduct.Every man ought to behave with consideration for other men.He ought not to steal,cheat,or destroy the property of others.There is no place of this sort of behavior in a civilized society.
  60.A man cannot have his own way all the time because ______.
   A.he may have no interest in other people
   B.he has to share the same in terest with the people in the same society
   C.his decisions are always unjust
   D.his decisions may harm other people
  61.The purpose of his passage is to ________.
   A.tell people how to behave in society
   B.illustrate the importance of laws
   C.teach people how to prevent criminal
   D.persuade people not to make their own decision
  62.It is implied that there will be fewer road accidents if ________.
   A.the drivers are more considerate of other people
   B.there are fewer cars or walkers in the street
   C.the motorists are not always in a hurry
   D.the passengers are calm but not confused before the accidents
  63.When can draw a conclusion that_______.
   A.the government should contribute more efforts
   B.the criminals should be more severely punished
   C.man should be more strict with himself
   D.man should have more and more similar interests

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The rising costs of health care have become a problem for man y countries in the world. To deal with this problem, it is recommended that a big part of the state health budget be used for health education and disease prevention instead of treatment. Actually, many kinds of diseases are preventable in many ways and preventing a disease is usually much cheaper than treating it. For example, people could avoid catching a cold if they dressed warmly when the weather starts getting cold. But many people get sick because they fail to do so, and have to spend money seeing a doctor.
Daily habits like eating more healthy food would have kept millions of families from becoming bankruptif the patients had taken ways for early prevention. For example, keeping a balanced diet, such as not consuming too much animal fat and trying to have enough vegetables and fruits, seems to be quite important.
  One very effective and costless way of prevention is regular exercise, which is necessary for a healthy mind and body. Regular exercise, such as running, walking, and playing sports is a good way to make people feel better or reduce stress.
In addition, health education plays a key role in improving people’s health. By giving people more information about health, countries could help people understand the importance of disease prevention and ways to achieve it. For example, knowing one’s family medical history is an effective way to help keep healthy. Information about health problems among close relatives will make them aware of what they should do to prevent certain diseases through lifestyle changes, which will work before it is too late.    
However, paying more attention to disease prevention does not mean medical treatment is unimportant. After all, prevention and treatment are just two different means toward the same effect. In conclusion, we could save money on health care and treat patients more successfully if our country spends more money on health prevention and education.
【小题1】What’s the best title of the passage?

A.Prevention or Education?B.Exercise or Illness?
C.Health or Illness?D.Prevention or Treatment?
【小题2】Which of the following can replace the underlined word “bankrupt”?
A.Unable to be cured.B.Unable to pay one’s debts.
C.Stronger than ever before.D.More successful than ever before.
【小题3】We learn from the passage that ______.
A.dressing warmly can prevent diseases.
B.a balanced diet is cheaper than regular exercise.
C.the more health education, the better.
D.the government’s health budget should be increased.
【小题4】Which of the following shows the structure of the passage?

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