短文改错专练（一）

Air pollution is now becoming a serious                  1.____　　

problem of public health， especially for some           2.____　

　　
developed countries about their population               3.____　

　　
increasing very fast. One of the major causes            4.____　

　　
of air pollution is that all sort of cars which          5.____　　

　
produce a poisonous gas calls monoxide（一氧化物）.      6.____　

　　
The gas can do harm people when it is                    7.____　

　　
high concentrated in a certain space.                    8.____　

　　
People in big city are anxious to get rid                9.____　

　　
of air pollution. In the passed they could              10.____　

　　
do nothing but wait for natural change.                 11.____　

　　
Now something has done to prevent cars from             12.____　　

　
sending waste gases in the air. Some people             13.____　

　　
are trying to make use for solar energy（太阳能）.      14.____　　

　
In a word， man is fighting a battle with pollution.    15.____　


    KEYS:1.√2.for→in 3.about→with 4.√5.sort→sorts 6.calls→called 7.people前加 to 8.high→highly 9.city→cities 10.passed→past 11.natural 前加a 12.done前加been 13.in→into 14.for→of 15.with→against