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!

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

Very hot weather is common in many parts of the world. Although hot weather just makes most people hot, it can cause medical problems and death.
Floods, storms and other terrible natural events kill thousands of people every year. And we hear much about them in news reports. We general hear little about heat, which experts say may be nature’s most dangerous killer.
Health experts say that since the year 1900, very hot weather has killed more people in the United States than any other natural event. One year--- the unusually hot summer of 1980 heat caused about 1,700 deaths in the United States. In 1995, more than 600 people died in another heat wave in one city----Chicago, Illinois.
Besides drinking lots of cool water , doctors say there are some other things to do to protect against the health dangers of heat. Stay out of the sun, if possible. Wear loose and light—colored clothes. Wear a hat while in the sun. Eat fewer hot and heavy foods. And, when possible, cook foods during cooler time of the day. If possible, rest more often.
Health experts say these simple steps can prevent the dangerous health problems caused by heat. They will prevent sickness, help you feel better and may even save your life.
【小题1】Hot weather is common ______.