【上海市2015年中考英语试题】 Complete the following passage with the words or phrases in the box. Each can be used only once.(将下列单词或词组填入空格，每空格限填一词，每词只能填一次)（共8分）

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

 
Rainforest also help to      the weather. When trees are cut down, it gets hotter. Besides, one quarter of our     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        them, we will never find out.
In my opinion, our future      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.