When people talk about air pollution, they are usually thinking about outdoor air   46  . But do you know that there is also 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   47   to do with polluted indoor air.

A lot of pollution comes from indoor activities   48   smoking and cooking. As most people  49   about 80%-90% of their time inside buildings, it is important to take indoor air pollution seriously, too.

Air pollution influences our health 50  . When the air is polluted, not only young children and old people  51   from it,  52   people with health problems suffer as well. Indoor air pollution can   53   people’s eyes, noses and throats. Air pollution, both indoor and outdoor, can also  54 lung cancer and heart disease! In the great London fog in 1952, 4, 000 people died in a few days  55   the pollution! It is said that half a million young children and women die each year in India because of indoor air pollution!

(   )46.A.pollution               B.pollute                       C.polluted

(   47.A.nothing                 B.everything                 C.something         

(   48.A.as well as              B.such as                            C.instead of          

(  )49.A.take                B.cost                          C.spend                

(   50.A.in many ways        B.in many things           C.in many houses  

(   51.A.bear                      B.stand                         C.suffer

(   )52.A.and                      B.but                            C.or                     

(   )53.A.hit                       B.hurt                          C.pollute               

(   )54.A.cause                   B.get                            C.give                         

(   )55.A.because of           B.thanks to                   C.because

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.

1. 1.

   Hot weather is common ______.

   1. A.
      all over the world.
   2. B.
      in many parts of the world
   3. C.
      in some parts of the world
   4. D.
      in a few parts of the world
2. 2.

   Experts say maybe _______is natural’s most dangerous killer.

   1. A.
      heat
   2. B.
      a flood
   3. C.
      a storm
   4. D.
      an earthquake
3. 3.

   About 1,700 people died of heat in the US _______.

   1. A.
      in 1900
   2. B.
      in 1980
   3. C.
      in 1995
   4. D.
      in 2000
4. 4.

   The passage is talking about _______.

   1. A.
      all kinds of terrible natural events in the world
   2. B.
      some health problems caused by hot weather
   3. C.
      how to prevent health problems
   4. D.
      the health problems in hot weather and the ways to stop them

　　People can communicate in many other ways. An artist can use his drawing to tell about beautiful mountains, about the blue sea and many other things. Books are written to tell about all the wonderful things in the world and also about people and their ideas.

　　Books, magazines, TV, radio and films all help us communicate with others. They all help us to know what is going on in the world and what other people are thinking about.

　　1.People communicate ________.

　　A. with words only　　　　　　　B. in many different ways

　　C. in letters and with drawings　　 D. with smiles, tears and hands

　　2.Signs can carry as many ________as words.

　　A. questions　　B. examples　　　C. tears and smiles　 D. messages

　　3.Which of the followings is NOT mentioned in the passage?

　　A. Books and magazines.　　　　 B. TV and films.

　　C. Newspapers.　　　　　　　　 D. Radio.

　　4.Communication is important because it can help people to ________.

　　A. understand the world and other people better

　　B. know what other people are thinking about

　　C. learn what’s happening in the world more quickly

　　D. A,B and C.

　　5.The best title for the passage is ________.

　　A. Signs Carry Messages　　　　 B. The Importance of Communication

　　C. Words, Signs and Drawings　　 D. Ways of Communications