VIII. Dùng từ gợi ý điền từ vào chỗ trống
Air pollution is a (1) .............. of ill health in human being. In a lot of countries there are laws (2) .............. the amout of smoke (3) ........... factories can produce. Although there isn't enough information on the effects of (4) .................. (5) ................. the atmosphere, doctors have proved that air pollution causes lung (6) .............. .
The gases from the exhausts of cars have also increased air pollution in (7)............ cities. The lead in patrol produces a poisonous gas which (8) ................ collects in busy streets (9) .......... high buildings. Children live in areas (10) ............. there is a lot of lead in the atmosphere can not (11) ........... as quickly as (12) ............. children and are clumsy when they use their hands.
There are other long term (13) ................ of pollution. If the gases in the atmosphere continue to increase, the earth's climate may become (14) ..............
A lot of the ice near the poles may melt and may cause (15) .......... floods
Từ gợi ý: in, warmer, other, most, which, effects, by, cause, surrounded, serious, limiting, diseases, often, think, where