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单选题 There ________ many trees at the foot of the mountain, but now they are slowlydisappearing because of human activities.7.(单选题)山脚下有许多树木,但现在由于人类活动,它们正在慢慢消失

A. is used toA.习惯于

B. used to B.习惯于

C. used to beC.曾经是

D. is used to beD.是用来的

新标准高职公共英语(综合教程3)课程封面

学科:新标准高职公共英语(综合教程3)

时间:2023-12-03 06:10:23

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