7.With the(41)development(develop) of industry,air pollution is getting more and more serious.In Beijing,many people suffer different kinds of illnesses because of air pollution.
Air pollution is caused by the (42)following (follow) reasons.It is (43)mainly(main) caused by vehicles.There are more and more cars,buses on the roads and they give off(44)poisonous(poison) gases.About 25% of air pollution is caused by factories.Another factor is the smoking,(45)whichnot only does harm to smokers'health but also to others'.(46)Besides these,about 10% of air pollution is caused by other reasons.
We should take some measures(47)to fight(fight) against pollution.New fuel can be used to take (48)theplace of gas.We can plant more trees.If everyone realizes the importance of environment (49)anddoes something to stop pollution,the problem will (50)be solved(solve解決).

分析 本文主要介紹空氣污染主要是由汽車排放的尾氣造成的;其次,是由工廠排放的廢氣造成的;再就是由抽煙造成.最后,呼吁我們做點什么來阻止污染.

解答 41.development 考查名詞.定冠詞the后接名詞,動詞develop的名詞是development.
42.following 考查形容詞.reason是名詞,其前用形容詞修飾,動詞follow的形容詞是following,意為"下列的,如下的".
43.mainly 考查副詞. cause是動詞,要用副詞修飾,形容詞main的副詞是mainly.
44.poisonous 考查形容詞.gas是名詞,其前用形容詞修飾,名詞poison的形容詞是poisonous.
45.which 考查定語從句.分析句子結(jié)構(gòu)可知這是一個定語從句,先行詞smoking指事,在從句中作主語,用關(guān)系代詞which.
46.Besides 考查介詞.前面提到了三種污染因素,應(yīng)是"除了這些",用besides.
47.to fight 考查動詞不定式.此處動詞不定式表示目的.
48.the 考查冠詞.take the place of意為"代替",是固定搭配.
49.a(chǎn)nd 考查連詞.realizes the importance of environment和does something用and連接構(gòu)成并列謂語.
50.be solved 考查動詞語態(tài).problem與solve之間是動賓關(guān)系,要用被動語態(tài).

點評 在一篇200詞左右的語篇(短文或?qū)υ挘┲辛舫?0處空白,部分空白的后面給出單詞的基本形式,要求考生根據(jù)上下文填寫空白處所需的內(nèi)容或所提供單詞的正確形式,所填寫詞語不得多于3個單詞.要做好語法填空題,理解短文是解題的前提,扎實的詞匯、句型和語法知識是基礎(chǔ),英語國家的背景知識是必要的補(bǔ)充.考生須靈活運用語法知識,如單詞詞性、單詞時態(tài)、名詞單復(fù)數(shù)、連接詞、代詞、冠詞等判斷各空白處應(yīng)填寫的內(nèi)容.答完后,還要通讀全文,核對所填單詞形式是否正確,是否符合語境.

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