猩红热的病原菌是() A.乙型溶血性链球菌 B.金黄色葡萄球菌 C.甲型溶血性链球菌 发布时间:2017-08-22 08:49 │ 来源:www.tikuol.com 题型:单项选择题 问题: 猩红热的病原菌是()A.乙型溶血性链球菌B.金黄色葡萄球菌C.甲型溶血性链球菌D.表皮葡萄球菌E.肉毒杆菌
题型:单项选择题 — Shall I help clean the kitchen, Mom? — Thank you. But you ________ it because I can do it myself. [ ]A. mustn't have doneB. wouldn't have done C. mightn't have doneD. don't have to do 查看答案