When people talk about air pollution, they are usually thinking about outdoor air _______. 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(倍) more polluted than the air outdoors! In fact, some American doctors say that 50% of illnesses have something to do with polluted indoor air.
_______ pollution comes from indoor activities _______ smoking and cooking. As most people _______ about 80%-90% of their time inside buildings, it is important to take indoor air pollution seriously, too.
Air pollution influences our health _______. When the air is polluted, not only young children and old people suffer from it, _______ people with health problems suffer as well. Indoor air pollution can _______ people’s eyes, noses and throats. Air pollution, both indoor and outdoor, can also _______ lung cancer and heart disease! In the great London fog(烟雾) in 1952, 4, 000 people died in a few days _______ the pollution! It is said ________ half a million young children and women die each year in India because of indoor air pollution!
16. A.pollution | B.pollute | C.polluting | D.polluted |
17. A.Many | B.Lot of | C.A lots of | D.A lot of |
18. A.as well as | B.such as | C.instead of | D.so as |
19. A.take | B.cost | C.spend | D.give |
20. A.in many ways | B.in many things | C.in many houses | D.in many years |
21. A.and | B.but also | C.or | D.while |
22. A.hit | B.hurt | C.pollute | D.beat |
23. 24. A.because of | B.thanks to | C.related to | D.because |
25.