Loulan is believed __________ over by sandstorms gradually from AD200 to AD400.A
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Loulan is believed __________ over by sandstorms gradually from AD200 to AD400.A.to cover | B.to be covered | C.to have covered | D.to have been covered |
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答案
D |
解析
试题分析:考查句型:sb/sth is believed to do/to have done,据相信某人/某物…,如果是将要做,用不定式一般式to do如果是已经做了,用不定式的完成式,句意:大家相信楼兰是从公元前200年到公元前400年逐渐被沙尘暴淹没的。因为楼兰是被掩埋的,用不定式完成式的被动,选D。 点评:固定句型是学习语言的重要环节。sb/sth is reported /believed to do/to have done,可以转化成It is reported /believed that句型,解答这类题目,关键是理解题干意思从而判断是动词不定式的什么形式,根据意思放入句子中进行比较,不难选出正确答案。 |
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