Look! The students ______ the classroom. 发布时间:2017-05-28 13:14 │ 来源:www.tikuol.com 题型:选择题 问题: Look! The students ______ the classroom.A. clean B. are cleaning C. are clean D. cleaning
题型:选择题 男性患者,68岁,有常年下腰痛病史,近1年来,出现间歇性跛行,行走困难,但可以骑自行车。此病人可能的病因是A.腰椎间盘突出B.骨折疏松症C.腰椎管狭窄症D.腰椎滑脱E.梨状肌综合征 查看答案