She was about to leave the room the tele 发布时间:2017-06-17 11:05 │ 来源:www.tikuol.com 题型:选择题 问题: She was about to leave the room the telephone rang.A.whenB.whileC.afterD.since
题型:选择题 食品卫生与身体健康密切相关,误食下列物质会对人体健康造成危害的是( )①工业用盐(主要成分NaNO2); ②工业酒精; ③食品保鲜剂;④霉变的馒头.A.仅①B.仅①③C.仅①②④D.①②③④ 查看答案