阅读下面短文,掌握其大意,从短文后所给的四个选项(A、B、C和D)中,选出可以填入空白处的最佳选项。

Many theories regarding the causes of juvenile delinquency(crimes committed by young people)focus either on the individual or on society as the major contributing influence.Theorieson the individual suggest that childrencriminal behavior before they were not sufficientlyfor previous misbehaviors or that they have learned criminal behavior through interaction with others.Theories focusing on the role of society suggest that children commit crimes into their failure to rise above their socioeconomic status or as a rejection of middle-class values.

Most theories of juvenile delinquency have focused on children fromfamilies,the fact that children from wealthy homes also commit crimes.The latter may commit crimes for lack of adequate control from parents.All,however,are uncertain or unimproved and are of course challenged with criticism.

Changes in the social structure may indirectlyjuvenile crime rates.For example,changes in the economy thatto fewer job opportunities for youth and rising unemployment make gainful employment increasingly difficult to obtain.This results inamong youths and may inlead more youths into criminal behavior.

Families have also experiencedthese years.More families consist of one parent households or two working parents;children are likely to have less supervision at home than was common in the traditional family.This lack of parental supervision is thought to be an influence on juvenile crime rates.Other noticeableof offensive acts includeexperience or failure in school,theavailability of drugs and alcohol,and the growing phenomenon of child abuse and child neglect.All these conditions tend to increase theof a child committing a criminal act,a direct cause and effect relationship has not yet been established.

1.A. centering B. depending C. figuring D. concerning

2.A. refer to B. know about C. engage in D. learn of

3.A. punished B. forgiven C. forgotten D. excused

4.A. return B. contact C. reference D. response

5.A. respected B. cultivated C. disadvantaged D. immigrated

6.A. considering B. ignoring C. highlighting D. believing

7.A. values B. misbehaviors C. criminals D. theories

8.A. affect B. reduce C. prevent D. reflect

9.A. point B. lead C. come D. add

10.A. in general B. on average C. by contrast D. at last

11.A. discomfort B. dissatisfaction C. dishonesty D. discrimination

12.A. case B. short C. turn D. return

13.A. failure B. miseries C. development D. changes

14.A. contrarily B. consequently C. similarly D. occasionally

15.A. education B. concept C. structure D. economy

16.A. suggestions B. causes C. ideas D. reports

17.A. smooth B. favorable C. unfavorable D. practical

18.A. increasing B. restricted C. reasonable D. popular

19.A. knowledge B. aspect C. strength D. probability

20.A. since B. although C. as D. because

Proverbs (谚语) are quite common in spoken English. We don’t normally put them in a composition or a letter. Sometimes it is helpful if you know what common proverbs mean. Here are a few examples.

1) “Once bitten, twice shy.” If a dog bites me, I shall be twice as careful in future when I see it. This proverb is also used to apply to many things and not only to dogs. If you have been cheated at a shop, you will not go the same shop again.

2) “A bird in the hand is worth two in the bush.” If I am a hunter, trying to catch birds, it is better to catch one than to see two birds in a bush but not able to catch them. Thus this means that what you have already got is better than the chance of being able to get something bigger in future.

3) “Too many cooks spoil the broth (soup)”. When too many people do something, they get in each other’s way and do a bad job.

4) “To pour oil on troubled waters” is to try to calm things down. Oil is lighter than water. If a ship is in trouble at sea, another ship may come to help it. The second ship can send small boats to rescue people. However, it may first pour oil on the sea to make the sea less rough.

5) “Don’t be a dog in a manger(槽)”means“ Don’t be selfish.” In a stable (马房), the manger is the place where the horse’s food is put. Sometimes a dog will sleep in the manger and bark when a horse comes to get its food. The dog does not want to eat the lay in the manger but it will not let the horse eat it.

6) “He is sitting on the fence” means that somebody will not say whether he is in favor of a plan or against it. He is sitting on a fence between two opposing sides, perhaps waiting to see which side will win.

7) “He who pays the piper calls the tune.” A piper is a musician. The man who employs or pays a musician can say what tunes the man will play. Thus this means that if a man provides the money for a plan, he can say how it will be carried out.

8) “You can’t get blood out of a stone” means that you cannot get something from a person who has not got any of the things you want. e. g. you cannot get a million dollars from a poor man.

1.Mr. and Mrs. Smith had a quarrel. Their friend, Mr. Brown, wanted to talk to them. When he came back, he told his wife that he had been trying to help the Smiths by ______.

A. getting blood out of a stone

B. pouring oil on troubled waters

C. sitting on the fence

D. being a dog in a manger

2.Mr. Wang paid for a new school. Some people didn’t like the design of the school but they didn’t argue with Mr. Wang because ______.

A. once bitten, twice shy

B. he was sitting on the fence

C. a bird in the hand is worth two in the bush

D. he who pays the piper calls the tune

3.Mrs. Lin wanted to buy a new dress. Her husband suggested that she buy it from a shop near their home. Mrs. Lin disagreed because she had been cheated by that shop. So she said :“I won’t go there again because ______.”

A. I am sitting on the fence

B. a bird in the hand is worth two in the bush

C. too many cooks spoil the broth

D. once bitten, twice shy

4.Mr. Brown had quite a good job in Hong Kong but he thought that if he went to Singapore, he might get a much better job with more money and a larger house. His wife didn’t want him to leave his job in Hong Kong and she reminded him that ______.

A. too many cooks spoil the broth

B. a bird in the hand is worth two in the bush

C. he who pays the piper calls the tune

D. you can not get blood out of a stone

Christian Eijkman, a Dutch doctor, left the Netherlands for the island of Java. Many people on the island had a disease called beri-beri. He was going there to try and find a cure.

At first, Eijkman thought some kind of germ (细菌) caused beri-beri. He raised some chickens. He didn’t eat them, but made experiments on them. The local people were quite surprised at that. One day he noticed that his chickens became sick when they were fed the food most Javanese ate — refined white rice (精炼米). When he fed them with unrefined rice, also known as brown rice, they recovered. Eijkman realized that he had made an important discovery — that some things in food could prevent disease. These things were named vitamins. The Javanese were not getting enough vitamins because they had actually removed the part that contains vitamins. Later, other diseases were also found to be caused by the lack of vitamins in a person’s food.

Today many people know the importance of vitamins and they make sure they have enough vitamins from the food they eat. If they don’t, they can also take vitamin pills.

1.Christian Eijkman went to the island of Java to ______.

A. help the Javanese with their illness

B. find ways to grow better crops

C. do some research about the island

D. spend his holiday

2.Why did Christian Eijkman raise some chickens?

A. To eat them.

B. To make money by selling them.

C. To give the Javanese a surprise.

D. To carry out his experiments.

3.If a person doesn’t get enough vitamins in his diet, he’d better ______.

A. eat more rice B. eat vitamin pills

C. eat some chicken D. eat more meat

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