4.---So many tourists pour into such beautiful places.
---I think it necessary they _____ be well preserved.( 。
A.canB.shallC.shouldD.may

分析 -如此多的游客涌進(jìn)了這么漂亮的地方.-我認(rèn)為這些地方被好好保護(hù)是很有必要的.

解答 答案:C.此處they是指so beautiful places,根據(jù)上句很多游客涌入這些美麗的地方,而表示對(duì)環(huán)境的擔(dān)憂,此處用should應(yīng)該更加合適.A.can能,會(huì),B.shall將要,D.may可能,均不合題意.

點(diǎn)評(píng) 本題考查情態(tài)動(dòng)詞的用法.根據(jù)上下文及說(shuō)話人的語(yǔ)氣態(tài)度選擇合適的情態(tài)動(dòng)詞.

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