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    【題目】Putting out forest fire is regarded as one of ___________ problems in the world.

    A.difficultB.more difficultC.most difficultD.the most difficult

    【答案】D

    【解析】

    句意:撲滅森林大火被認為是世界上最難解決的問題之一。

    考查形容詞最高級句型,觀察句子這里運用的句型是“one of the + adj.最高級+可數(shù)名詞復數(shù)+范圍”表示“最……之一”。形容詞最高級前要有定冠詞the,difficult屬于多音節(jié)單詞,其最高級應該是most difficult,故選D。

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