Question

Our earth has a long history of about 4,600 million years. Man only lived on the earth for 3,500 years. But we' ve already changed our earth a lot. Some of the changes are good while some are ①_for the earth.

In the past hundreds of years, people have cut down too many trees. So more beautiful animals and plants②____out. Cars and buses have polluted the air. Factories have also polluted the land and the water.

Many forests and farms became deserts（沙漠）.The earth gets warmer and warmer. Because the surface of ocean（海平面）is rising, in the future some big cities will fall into the sea water. How terrible it is! The problems are more and more serious. So we must do something to stop people from polluting our earth.

任务一：请根据短文内容，分别写出①、②两处所缺单词。

1.① ②

任务二：根据意思，用短文中恰当的单词补全句子。

2. (l)It's known that China is a great country with a long____ ．

(2) Could you be more____ this time? The competition is important to us.

任务三：请把上文中画线的句子翻译成汉语。

3.____

任务四：请根据短文内容回答下列问题。

4. What does the underlined word "rising" mean in Chinese?

5.What polluted the air?

Answer 1