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

1.① bad ②died

2. (l)history(2) serious

3.因此我们必须采取行动阻止人们污染(我们的)地球。

4.上升

5.Cars and buses.

【解析】

试题分析：本文叙述了自从地球上有人类以来，人们对环境的影响很大，一些森林和农场变成了沙漠，一些城市由于海平面的上升，变成了地下城市，由于车辆的增多，污染了空气，使环境变的很糟糕。

1.根据while可知，这里前后是对比关系，前面提到的是好的变化，所以后面应该是坏的变化。故第一空用bad；所以一些漂亮的动物和植物就灭绝了，短语die out灭绝。故第二空用out。① bad ②died

2.根据Our earth has a long history of about 4,600 million years.可知，地球上的中国有悠久的历史。故第一空填：history。根据The competition is important to us.可知，竞争很重要，所以要重视这件事。故填：serious。故答案为： (l)history(2) serious

3.短语do something采取措施；stop sb from doing sth阻止某人做某事。故答案为：因此我们必须采取行动阻止人们污染(我们的)地球。

4.根据in the future some big cities will fall into the sea water可知，一些城市因为海平面的上升，所以变成了地下城市。故答案为：上升

5.根据Cars and buses have polluted the air.可知，汽车和公交车污染了空气。故答案为：Cars and buses.

考点：任务型阅读。