题目内容
七.Environmental problems are becoming more and more s 1 all over the world. For example cars have made the air harmful to people and poisonous gas is g 2 off by factories. Trees on the hills have been cut down and waste water is being poured continuously intorivers.Furthermore,wherever we go today,we can find rubbish c 3 disposed (处理). Pollution is,in fact,threatening our existence (威胁我们的生存) .
The earth is our home and we have the d 4 to take care of it for ourselves and for our later generations. Fortunately,more and more people have r 5 these problems. Measures have been taken to cope with these problems b 6 the government. Laws have been passed to stop p 7 . I hope the problem will be solved in the near future and our home will b 8 better and better.
1. 2. 3. 4.
5. 6. 7. 8.
七、 1. serious 2. given 3. carelessly 4. duty
5. realized 6. by 7. pollution 8. become/be
