题目内容
【题目】As a stopping point on the famous Silk Road, Loulan is believed __________ by sandstorms from AD 200 to AD 400.
A. to be gradually covered over B. to gradually cover over
C. to have been gradually covered over D. to gradually have covered over
【答案】C
【解析】考查固定句式。句意:大家认为作为丝绸之路的中转点而出名的楼兰,是在公元200至400年间慢慢地被沙尘暴覆盖的。Sth./sb is believed to have done…“某人/某物据相信已经做了”因为这件事已经发生,所以用不定式的完成式。
练习册系列答案
相关题目