引起疱疹性咽峡炎的病原体是() A.呼吸道合胞病毒 B.腺病毒3、7型 C.副流感病 发布时间:2017-08-26 06:06 │ 来源:www.tikuol.com 题型:单项选择题 问题: 引起疱疹性咽峡炎的病原体是()A.呼吸道合胞病毒B.腺病毒3、7型C.副流感病毒D.柯萨奇A组病毒E.B族链球菌
题型:单项选择题 —What were you doing this time yesterday? —I ______ on the grass and drawing a picture. [ ]A. sit B. sat C. am sitting D. was sitting 查看答案