Differences in bicycling between China and other countries 

   People all over the world ride bicycles. But there are many differences between China and other countries.

   Wearing helmets (头盔) 

   You may think helmets are useless. But you are wrong. In many places kids have to wear them when they ride bikes. In some places of the United States,it's against the law (违反法律) for kids under 16 to ride without helmets. Many people say that helmets are like seat belts (安全带) for bikes.

   Bike lanes (车道) 

   In China,bicycles have their own special lanes on the road. People can ride next to cars. In the USA. roads are only for cars. People don't ride their bikes to school or work. But this isn’t true everywhere in the West. In the Netherlands (荷兰) there are more bikes than people. The whole country has bicycle lanes. 

   Riding for fun 

   Do you ride your bike to school? In China this is very common. But in the USA. kids only ride their bikes for fun on the weekend. They regard bicycling as a sport. Many cities have special parks. People turn old railways (铁路) into bike roads. People can ride from town to town.(陕西省西安市庆安中学 2011 —2012 学年 八年级下学期期中考试英语试题)

1. What are the differences between China and other countries in bicycling?

are the differences between China and other countries in bicycling.

2. Which country has the law that everyone under 16 must wear a helmet while riding?

has the law that everyone under 16 must wear a helmet while riding.

3. What do many people think of helmets?

They think that helmets are for bikes.

4. Which country has more bikes than people?

there are more bikes than people.

5. What do Americans regard bicycling as and how do they do?

They regard it as ; they build some special and turn into bike roads.

Nuclear power's(核能的) danger to health, safety, and even life itself can be described in one word; radiation(辐射). Nuclear radiation has a certain mystery about it, partly because it cannot be detected (探测) by human senses. It can't be seen or heard, or touched or tasted, even though it may be all around us. There are other things like that. For example, radio waves are all around us but we can't detect them, sense them, without a radio receiver. Similarly, we can't sense radioactivity without a radiation detector. But unlike common radio waves, nuclear radiation is not harmless to human beings and other living things. At very high levels, radiation can kill an animal or human being completely by killing masses of cells (细胞) in important organs (器官). But even the lowest levels can do serious damage. There is no level of radiation that is completely safe. If the radiation does not hit anything important, the damage may not be significant. This is the case when only a few cells are hit, and if they are killed completely. Your body will replace the dead cells with healthy ones. But if the few cells are only damaged, and if they reproduce themselves, you may be in trouble. They reproduce themselves in an unusual way. They can grow into cancer. Sometimes this does not show up for many years.

This is another reason for some of the mystery about nuclear radiation. Serious damage can be done without the knowledge of the person at the time that damage has occurred. A person can be irradiated(放射治疗) and feel fine, then die of cancer five, ten, or twenty years later as a result. Or a child can be born weak or easy to get serious illness as a result of radiation absorbed by its grandparents. Radiation can hurt us. We must know the truth.

1.According to the passage, the danger of nuclear power lies in __________.

A. nuclear mystery B. radiation detection

C. radiation level D. nuclear radiation

2.Radiation can lead to serious results even at the lowest level ________.

A. when it kills few cells

B. though the damaged cells can repair themselves

C. if it damages few cells

D. unless the damaged cells can reproduce themselves

3.Radiation can hurt us in the way that it can _____.

A. kill large numbers of cells in main organs so as to cause death immediately

B. damage cells which may grow into cancer years later

C. affect the healthy growth of our younger generation

D. lead to all of the above results

4.Which of the following can be best inferred from the passage?

A. The importance of protection from radiation cannot be overemphasized (过分强调).

B. The mystery about radiation remains unsolved.

C. Cancer is mainly caused by radiation.

D. Radiation can hurt those who do not know about its danger.

完形填空

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

My 8-year-old son, Kevin, has made friends with some boys in the neighborhood. He has been ________with them after school. My wife, and I are ________ he has other kids to be with and we have ________ and encouraged him to play with his friends. We also want Kevin to learn ________ , so we have asked him to tell us ________ he’s going and to come home at a specified(规定的)time.

The ________ started when Kevin didn’t come home on time. On one occasion, I asked Kevin to be back at 6 pm. By 6:30, I needed to go ________ him. I found him at a friend’s house, and he looked ________ that he couldn’t continue playing. After we came home, I sat Kevin down for a talk about the ________ of keeping his word. I told him I was not worried about his arriving a few ________ late, after a half hour, he told me he understood and I was________ .

The next day, I came home from work at about 6:30 pm and my wife asked me to go and get Kevin back ________ she said he should be back home at 6. I walked to his friend’s house and a look of ________appeared on Kevin’ face when he came to the door.

At ________, my wife and I spoke to Kevin about why he didn’t come home on time again. He said he just wanted to ________ playing. This was ________ , so we decided to ground(罚不准出门)him for a week. This ________ no playing with his friends.

For the next week, whenever his friends came to ask for Kevin, we let him________ to them that he was grounded. We felt this would help him be responsible for his ________ .

As a ________ , I believe one of the most important things we can teach our kids is self-responsibility and that actions have results.

1.A. studying B. playing C. chatting D. quarreling

2.A. glad B. lucky C. worried D. sure

3.A. made B. allowed C. trained D. forced

4.A. amusements B. communication C. honesty D. responsibility

5.A. when B. why C. where D. whenever

6.A. changes B. conflicts C. worries D. problems

7.A. looking for B. picking up C. waiting for D. calling up

8.A. angry B. nervous C. disappointed D. ashamed

9.A. quality B. importance C. stories D. ways

10.A. hours B. minutes C. days D. times

11.A. satisfied B. shocked C. surprised D. concerned

12.A. if B. unless C. because D. so

13.A. guilt B. disappointment C. excitement D. hatred

14.A. home B. school C. work D. office

15.A. finish B. keep C. learn D. stop

16.A. impossible B. impolite C. unacceptable D. unbelievable

17.A. meant B. suggested C. showed D. implied

18.A. reply B. apologize C. tell D. explain

19.A. decisions B. words C. actions D. friends

20.A. teacher B. parent C. writer D. professor

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