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【題目】Everybody should make _____ effort to reduce pollution and create a clean environment.

A.aB.anC.theD.不填

【答案】B

【解析】

句意:每個人都應該努力減少污染,創(chuàng)造一個清潔的環(huán)境。

考查冠詞。a一個,不定冠詞,用在輔音音素開頭的單詞前;an一個,不定冠詞,用在以元音音素開頭的單詞前;the定冠詞,表特指,根據固定搭配make an effort“作出努力”effort是以元音音素開頭的單詞,所以前面要用不定冠詞an,故選B

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