Question

small , lung , fresh , dark , medicine , die out , control  , thousand , hold , over

Rainforests are thick forests in the hot parts of the world . It’s always   1.  and hot in the rainforests .It covers 6% of the earth’s surface .    2.    of animals live in rainforests . Many of them live in the tree   3.  30 meters from the ground .Rainforests are very important to us . They are the   4.   of the earth .The plants in the forests help to make the air   5.   and cleaner . They also help to 6. the water when  it  rains  and  keep  the water cycling . They play an important part in   7.  the climate . Without rainforests, many beautiful plants and animals would 8. .Rainforests give us wood , food ,fruit ,        9.   ,and many more useful things. But now , rainforests are becoming   10. and     ,so we should protect them .

Answer

1.dark

2.thousands

3.over

4.lungs

5.fresher

6.hold

7.controlling

8.die out

9.medicine

10.smaller;smaller

【解析】

1.考查形容词。句意：热带雨林里总是又黑又热。dark黑的。

2.考查数词。句意：成千上万的动物生活在热带雨林。thousands of成千上万的。

3.考查介词。句意：很多动物生活在距离地面30多米的树上。over = more than 多于,超过的意思。

4.考查名词复数。句意：热带雨林是地球的肺。lung肺。根据主语they，可知此处用名词复数。

5.考查形容词比较级。句意：森林中的植物有利于使空气更新鲜更干净。fresh干净的。根据句意和句子结构可知此处用比较级。

6.考查动词。句意：当下雨时，森林有助于保留水分并且保持水的循环。hold保持。

7.考查动词。句意：热带雨林在控制气候方面也起着重要作用。control控制。介词后面用动词ing形式。

8.考查动词短语。句意：没有雨林，很多美丽的动植物就会灭绝。die out灭绝。情态动词后面加动词原形。

9.考查名词。句意：雨林给我们提供木材，食物，水果和药。medicine药，是不可数名词。

10.考查比较级。句意：雨林正在变得越来越少，我们应该保护它们。比较级+and+比较级，越来越。

考点：单词填空