短文填空 Air is very important to everything that lives. But the air we br

题文

短文填空     Air is very important to everything that lives. But the air we breathe is getting (1)d______. People all over the world are looking for ways to make it (2)c______ again.     Have you ever watched the (3)s______ from chimneys (烟囱) rising high in the air? Have you (4)s______ the smoke from cars and trucks on roads or the smoke from planes? The smoke is not (5)g______ to breathe. If we want to keep fit and strong, we need to (6)b______ clean air.     With more and more (7)f______ everywhere and more and more cars, trucks and planes, it is getting more and more (8)d______ to do with the air pollution.     Scientists have already found (9)w______ to stop or slow down some of the things that make the air dirty. They will not stop working (10)u______ we have clean air again.

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答案

1. dirty     2. clean    3. smoke    4. en   5. good6. breathe    7. factories    8. difficult    9. ways   10. until

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