MANNERED:A．advancedB．naturalC．childishD．lucidE．unaware

If parents both smoke, who has a worse effect on children？

A．Mother.

B．Father.

C．Both.

根据以下内容回答题：

It has been shown that children who smoke have certain characteristics．Compared with non．smokers they are more rebellious，their work becomes worse as they move up school，they are more likelv to leave school early，and are more often delinquent and sexually premature．Manv of these features can be summarized as anticipation of adulthood． There are a number of factors which determine the onset of smoking，and these are largely psychological and social．They include availability of cigarettes，curiosity，rebelliousness，appearing tough，anticipation of aduhhood，social confidence，the example of parents and teachers，and smoking by friends and older brothers and sisters．

It should be much easier to prevent children from starting to smoke than to persuade adults on giving up the habit once established，but in fact this has proved very difficult.The example set up by people in authority，especially parents，health care workers，and teachers，is of Drime importanee．School rules should forbid smoking by children on the premises．This rule has been introduced at Summerhill School where I spent my school days． There is，however，a risk of children smoking just to rebel against the rules，and even in those schools which have tried to enforce no smoking by physical punishment there is as much smoking as other schools．Nevertheless，banning smoking is probably on balance beneficial．Teachers should not smoke on school premises，at least not in front of childr‘en．

In the passage the author puts emphasis on__________ ．

A.the effect of smoking among children

B.the reason why children start smoking

C.the difficulty in preventing．children from smoking

D.the measures to ban smoking among children

(Cigarette smoke) has been shown to contain numerous compounds that (are known to) cause cancer in experimental animals and (they) appear to be strongly (linked to) human cancer, especially cancer of the lung

A．Cigarette smoke

B．are known

C．they

D．linked to

(Cigarette smoke) has been shown to contain numerous compounds that (are known to) cause cancer in experimental animals and (they) appear to be strongly (linked to) human cancer, especially cancer of the lung

A．Cigarette smoke

B．are known

C．they

D．linked to

smokers they are more rebellious, their work deteriorates as they move up school, they are more likely to leave school early, and are more often delinquent and sexually precious. Many of these features can be summarized as anticipation of adulthood.

There are a number of factors, which determine the onset of smoking, and these are largely psychological and social. They include availability of cigarettes, curiosity, rebelliousness, appearing thought, anticipation of adulthood, social confidence, the example of parents and teachers, and smoking by friends and older brothers and sisters.

It should be much easier to prevent children from starting to smoke than to persuade adults to give up the habit once established, but in fact this has proved very difficult. The example set by people in authority, especially parents, health care workers, and teachers, is of prime importance. School roles should forbid smoking by children on the premises. This role has been introduced at Summerhill School where I spent my schooldays.

There is, however, a risk of children smoking just to rebel against the rules, and even in those schools which have tried to enforce no smoking by corporal punishment there is as much smoking as in other schools. Nevertheless, banning smoking is probably on balance beneficial. Teachers too should not smoke on school premises, at least not in front of children.

In this passage the author puts an emphasis on ______.

A．the effect of smoking among children

B．the difficulty in preventing children from smoking

C．the reasons why children start smoking among children

D．the measures to ban smoking among children

When a group of children who have been watching television programs that include acts of violence is sent to play with a group of children who have been watching programs that do not include acts of violence, the children who have been watching violent programs commit a much greater number of violent acts in their play than do the children who have been watching nonviolent programs. Therefore, children at play can be prevented from committing violent acts by not being allowed to watch violence on television. The argument in the passage assumes which one of the following？

A．Television has a harmful effect on society.

B．Parents are responsible for the acts of their children.

C．Violent actions and passive observation of violent actions are not related.

D．There are no other differences between the two groups of children that might account for the difference in violent behavior.

E．Children who are treated violently will respond with violence.

This is one of the best films______.

A．that have been shown this year

B．that have shown

C．that has been shown this year

D．that you talked

e-threatening diseases, such as whooping cough, polio and diphtheria. Therefore, Steven, who has been immunized, is most unlikely to fall sick with these diseases.

The Dangers of Secondhand Smoke

Most people know that cigarette smoking is harmful to their health. Scientific research shows that it causes many kinds of diseases. In fact, many people who smoke get lung cancer. However, Edward Gilson has lung cancer, and he has never smoked cigarettes. He lives with his wife, Evelyn, who has smoked about a pack of cigarettes a day throughout their marriage. 46 No one knows for sure why Mr. Gilson has lung cancer

Nevertheless, doctors believe that secondhand smoke may cause lung cancer in people who do not smoke because nonsmokers often breathe in the smoke from other people&39;s cigarettes. 47 The US Environmental Protection Agency reports that about 53,000 people die in the United States each year as a result of exposure to secondhand smoke.

The smoke that comes from a lit cigarette contains many different poisonous chemicals. In the past, scientists did not think that these chemicals could harm a nonsmoker&39;s health. 48 They discovered that even nonsmokers had unhealthy amounts of these toxic (有毒的 ) chemicals in their bodies. As a matter of fact, almost all of us breathe tobacco smoke at times, whether we realize it or not. For example, we cannot avoid secondhand smoke in restaurants, hotels and other public places. Even though many public places have nonsmoking areas, smoke flows in from the areas where smoking is permitted.

It is even harder for children to avoid secondhand smoke. 49 Research shows that children who are exposed to secondhand smoke are sick more often than children who live in homes where no one smokes and that the children of smokers are more than twice as likely to develop lung cancer when they are adults as are children of nonsmokers. The risk is even higher for children who live in homes where both parents smoke.

People are becoming very aware of the dangers of secondhand smoke. 50

A. Recently, though, scientists changed their opinion after they studied a large group. of nonsmokers.

B. The Gilsons have been married for 35 years.

C. This smoke is called secondhand smoke.

D. However, secondhand smoke is dangerous to all people, old or young.

E. As a result, they have passed laws which prohibit people from smoking in many public places.

F. In the United States, nine million children under the age of five live in homes with at least one smoker.

请回答（46）__________ 查看材料

A.A

B.B

C.C

D.D

E.E

F.F