Question

A. destroy    B. medicines   C. depends on    D. machines  E. control

Rainforest also help to   1.   the weather. When trees are cut down, it gets hotter. Besides, one quarter of our   2. come from plants. Many of these plants can be found only in rainforests. There is a lot that we have not learnt about rainforests. If we   3.   them, we will never find out.

In my opinion, our future   4.  saving the rainforests. We must tell more people how important rainforests are so that they will stop doing harm to them. We must protect the rainforests now. We have to act now to save our only home.

Answer

1.E

2.B

3.A

4.C

【解析】

试题分析：这篇短文承接上文继续描述了雨林对人类的重要性，再次强调我们必须保护雨林，必须马上行动起来保护我们唯一的家园。

1.E句意：雨林也有助于调控天气。根据后文当树木被砍伐，天气就变的更热，可知雨林能帮助控制天气，故填E

2.B句意：除此之外，我们药物的四分之一来自植物。这些植物中许多只能在雨林中被找到。B. medicines 药；D. machines机器。根据句意，故选 B

3.A句意：关于雨林我们还有许多不了解。如果我们破坏了他们，我们将永远不能查出。根据句意，故选A

4.C在我看来，我们的未来取决于对雨林的拯救。depends on 取决于，依赖。结合句意，故选C【考点定位】环境保护类短文阅读。