Question

【题目】A rainforest is an area 【1】(cover) by tall trees with the total high rainfall spreading quite equally through the year. Rainforests have a great effect 【2】the world environment because they can take in heat from the sun and adjust the climate. Without the forest cover, these areas would reflect 【3】(much) heat into the atmosphere, warming the rest of the world. Losing the rainforests may also influence wind and rainfall patterns, potentially【4】(cause) certain natural disasters all over the world.

In the past hundred years, 【5】(human) have begun destroying rainforests in search of the three major resources: land for crops, wood for paper and other products, land for raising farm animals, 【6】affects the environment as a whole. For example, a lot of carbon dioxide in the air comes from burning the rainforests. People 【7】 (obvious) have a need for the resources from cutting trees 【8】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【9】 (medicine) value. It is extremely likely that our best chance to cure diseases 【10】(lie) somewhere in the world’s shrinking rainforests.

Answer 1

【答案】

【1】covered

【2】on

【3】more

【4】causing

【5】humans

【6】which

【7】obviously

【8】but

【9】medical

【10】lies

【解析】本文主要介绍了雨林对于人类的重要作用。

【1】考查过去分词。过去分词covered作定语，修饰名词area，与之是被动关系，故填covered。

【2】考查介词。固定短语：have an effect on（对……有影响），故填on。

【3】考查形容词。句意：如果没有森林覆盖，这些地区将把更多的热量反射到大气中，使世界其他地区变暖。根据句意，应该用much的比较级，故填more。

【4】考查现在分词。现在分词causing作结果状语，与这句话的主语是主动关系，故填causing。

【5】考查名词。名词human（人、人类）作主语，谓语动词是have，所以主语名词要用复数形式，表泛指，故填humans。

【6】考查关系代词。非限制性定语从句，用关系代词which引导，在从句中作主语，代替前边整个句子，故填which。

【7】考查副词。副词obviously（明显地）作状语，修饰谓语动词have，故填obviously。

【8】考查连词。句意：人们显然需要砍伐树木所需的资源，但是我们将遭受比我们所能得到的更多的损失。用表转折的连词but连接前后两个句，故填but。

【9】考查形容词。形容词medical（医学的）作定语，修饰名词value，故填medical。

【10】考查动词。谓语动词lies，主语是名词chance，是单数形式，说的是一般状况，所以要用一般现在时态，故填lies。