题型：语法填空（语篇） 题类：常考题 难易度：普通
河北省邯郸市2017-2018学年高二上学期英语期中考试试卷
A rainforest is an area (cover) by tall trees with the total high rainfall spreading quite equally through the year. Rainforests have a great effect on the world environment because they can take in heat from the sun and adjust the climate.the forest cover, these areas would reflect more heat into the atmosphere, (warm) the rest of the world. Losing the rainforests may also influence wind and rainfall patterns, potentially causing certain natural disasters all over the world.
In the past hundred years, humans (begin) destroying rainforests in search of three major resources: land for crops, wood for paper and other products, land for raising farm (animal). This action affects the environment as a whole. For example, a lot of carbon dioxide in the air comes from burning the rainforests. People (obvious) have a need for the resources we gain from cutting trees we will suffer much more than we will benefit.
Rainforests are often called the world's drug store. More than 25% of the medicines we use today come from plants in rainforests. However, fewer than 1% of rainforest plants have been examined for their (medicine) value. It is extremely likely our best chance to cure diseases (lie) somewhere in the world's shrinking rainforests.
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