When people talk about air pollution, they are usually thinking about outdoor air  1 . But do you know that there is    2  air pollution inside homes, offices, hotels and other buildings? The air in your home can be 2 to 100 times more polluted than the air outdoors! In fact, some American doctors say that 50% of illnesses have   3   to do with polluted indoor air.

A lot of pollution comes from indoor activities   4   smoking and cooking. As most people    5   about 80-90% of their time inside buildings, it is important to take indoor air pollution seriously, too.

Air pollution influences our health   6 . When the air is polluted, not only young children and old people suffer from it,   7  people with health problems suffer as well. Indoor air pollution can   8  people's eyes, noses and throats. Air pollution, both indoor and outdoor, can also lead to lung cancer（肺癌）and heart disease! In the great London fog in 1952, 4,000 people died in a few days   9  the pollution!   10  is said that half a million young children and women die each year in India because of indoor air pollution!

1.                A．pollution        B．sadness         C．illness    D．business

2.                A．too            B．none           C．also  D．neither

3.                A．nothing         B．everything      C．something     D．anything

4.                A．as well as       B．such as         C．instead of D．for example

5.                A．take           B．cost            C．give D．spend

6.                A．in many ways    B．in many things    C．in many houses     D．by the way

7.                A．and            B．but            C．or   D．until

8.                A．hit            B．hurt           C．polluted  D．destroyed

9.                A．because of      B．thanks to        C．related to     D．or

10.               A．This           B．That           C．What D．It

阅读短文并按每小题的要求答题。

In the past twenty years, riding bicycles has become more and more popular among people of all ages. (1) Bicycles have long played an important part in the lives of American young people.But today an even greater number of adults cycle along roadsides and bicycle paths.These new riders are often trying to become fit or lose weight. They have found that bicycling is a pleasant way to stay healthy.

    This is certainly good for health. But it has also brought some problems. With all these added people on the road, bicycle safety has become a matter of real importance.

    Bicycle safety is mostly a matter of common sense. People should ride only on bicycle paths where they will not be badly hurt. There are also a number of rules that riders should follow,especially when riding on streets or highways. Bicyclists should never ride against the traffic,nor should they carry other people on their bicycles. They are also supposed to ride in single line on busy streets and to walk bicycles across the busy intersections（交叉路口）．(2)By following these rules, bicycle riders will___ _____ stay healthy_____ ______be safe.

    In one recent year, the National Safety Council reported that 34 thousand bicycle riders were hurt in highway accidents. In the same year,another six hundred riders were killed. Since the introduction of crash helmets(头盔)in 1980,the number of injuries(伤者)and deaths from bicycling accidents had gone down. Today, more and more riders realize the dangers of bicycling. They are wearing helmets and paying closer attention to cycling rules.

1.将画线句子(1)译成中文。

__________________________________________

2.在(2)句的空白处分别填入两个适当的词，使旬意完整、上下文通顺。

_____ _______;_______,_______

3.回答问题：According to the National Safety Council’s report,what’s the total number of injuries and deaths in one year?

_______________________________________________________

4.在文中找出与“Riders should follow a number of rules."意思相近的句子。

_______________________________________________________

5.在文中找出最能表达该短文主题的句子。

_______________________________________________________

In the past twenty years, riding bicycles has become more and more popular among people of all ages. (83) Bicycles have long played an important part in the lives of American young people. But today an even greater number of adults cycle along roadsides and bicycle paths. These new riders are often trying to become fit or lose weight. They have found that bicycling is a pleasant way to stay healthy.
This is certainly good for health. But it has also brought some problems. With all these added people on the road, bicycle safety has become a matter of real importance.
Bicycle safety is mostly a matter of common sense. People should ride only on bicycle paths where they will not be badly hurt. There are also a number of rules that riders should follow, especially when riding on streets or highways. Bicyclists should never ride against the traffic, nor should they carry other people on their bicycles. They are also supposed to ride in single line on busy streets and to walk bicycles across the busy intersections (交叉路口) . (84)By following these rules, bicycle riders will not only stay healthy but also be safe.
In one recent year, the National Safety Council reported that 34 thousand bicycle riders were hurt in highway accidents. In that same year, another six hundred riders were killed. Since the introduction of crash helmets (头盔) in 1980, the number of injuries (伤者) and deaths from bicycling accidents had gone down. Today, more and more riders realize the dangers of bicycling. They are wearing helmets and paying closer attention to cycling rules.
根据短文内容回答下列问题。
【小题1】How many rules should the riders follow? Give one example.
                                                                             
【小题2】According to the National Safety Council’s report, what’s the total number of injuries and deaths in one recent year?
                                                                             
B. 将短文中划线部分译成汉语。
【小题3】                                                                          
【小题4】                                                                       
C. 请给短文拟一个适当的英文标题。
【小题5】                                    

At 18, many American young people go off on their own. They go away to college or find full-time jobs, and they often rent their own apartments. Some get married and start families. This independence(独立性)is learned from childhood. From an early age, American children learn responsibility.Children as young as 2 begin to put away their toys and dress themselves. At 3, many children do simple chores like setting the table.
Using money wisely is also taught early. As soon as a child understands the value of money, he or she receives a weekly allowance. This is used for things the child wants, like toys or treats. The child can spend of save it, usually with little guidance(指导) from parents. If the child wants money besides his or her allowance, it must be made by doing extra chores.
Children are taught early in life to think for themselves. They are allowed to make some decisions-and make mistakes. Failure(失败) often teaches more than success.
【小题1】Many American young people begin to live on themselves _____ .