Loulan, once a small, wealthy commercial city, is believed by many people___________over gradually b

题目简介

Loulan, once a small, wealthy commercial city, is believed by many people___________over gradually b

题目详情


Loulan, once a small, wealthy commercial city, is believed by many people___________over gradually by sandstorms from AD 200 to AD 500.
A.coveredB.was coveredC.to be coveredD.to have been covered
题型:单选题难度:偏易来源:不详

答案

D

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