Leading-in
Task Ⅰ Observe the following pictures carefully and match them with the corresponding information.Then describe them using your own words.
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A.soil pollution B.noise pollution C.white pollution
D.water pollution E.light pollution F.air pollution
Task Ⅱ Read the following paragraph and try to translate it into Chinese.Then discuss with your classmates about present environmental problems.
Environmental problems are becoming more and more serious all over the world.With the development of industry and agriculture，cars make great noises and give off poisonous gas.Trees on the hills have been cut down，and waste water is being poured continuously into rivers.Furthermore，wherever we go today，we can find rubbish carelessly disposed.The whole ecological balance of the earth is changing.Massive destruction of environment has brought about negative effects and even poses a great threat to man's existence.Pollution is，in fact，threatening our existence.