【題目】用所給詞的適當(dāng)形式填空，其中有兩項(xiàng)多余。

feed, fresh, rubber, small, on, control, meat

There are a lot of trees around us. The trees can help to make the air 【1】 and cleaner. They can also help to 【2】 the weather. They provide(提供) humans with food，【3】, medicine and other things. Because of the trees, many animals can live 【4】 the earth. But people often cut trees down in large numbers. The forests are becoming much 【5】 than before, so we should protect them well.

【答案】

【1】fresher

【2】control

【3】rubber

【4】on

【5】smaller

【解析】

短文講述了我們周圍有很多樹。樹木可以幫助使空氣更清新和清潔。它們還可以幫助控制天氣。他們?yōu)?/span>(提供)人類提供食物，橡膠，藥品和其他東西。因?yàn)橛辛藰�，許多動(dòng)物可以生活在地球上。但是人們經(jīng)常大量砍伐樹木。森林變得比以前小得多，所以我們應(yīng)該保護(hù)好它們。

【1】句意：樹木可以幫助使空氣更清新和清潔。根據(jù)空格前面的The trees can help to make the air，結(jié)合選項(xiàng)可知，這里表示樹可以使空氣新鮮，結(jié)合空格后面的and cleaner可知，這里要用相應(yīng)的比較級(jí)。故填：fresher。

【2】句意：它們還可以幫助控制天氣。

根據(jù)空格前面的They can also help to，以及后面的the weather，結(jié)合選項(xiàng)可知，這里表示樹可以幫助支配天氣情況。to的后面要用動(dòng)詞原形。故填：control。

【3】句意：他們?yōu)槿祟愄峁┦澄�，橡膠，藥品和其他東西。

根據(jù)空格前面的food和后面的medicine and other things，結(jié)合選項(xiàng)可知，這里要用名詞rubber，表示樹可以提供橡膠，其中rubber為不可數(shù)名詞。故填：rubber。

【4】句意：因?yàn)橛辛藰�，許多動(dòng)物可以生活在地球上。

根據(jù)空格前面的many animals can live，以及后面的the earth可知，很多的動(dòng)物生活在地球上。故填：on。

【5】句意：森林變得比以前小得多，所以我們應(yīng)該保護(hù)好它們。

根據(jù)上句的But people often cut trees down in large numbers，結(jié)合空格前面的The forests are becoming much，以及后面的than before可知，森林變得比以前更小了。故填：smaller。

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