硫在氧气中燃烧的实验现象,叙述错误的是( ) A.发出蓝紫色火焰 B.生成有刺激 发布时间:2017-06-08 15:00 │ 来源:www.tikuol.com 题型:选择题 问题: 硫在氧气中燃烧的实验现象,叙述错误的是( )A.发出蓝紫色火焰B.生成有刺激性气味的气体C.放出热量D.发出微弱的淡蓝色火焰
题型:选择题 —What happened to Mike? —He had a stomachache. He began to work _______ having breakfast this morning. A.withB.ofC.fromD.without 查看答案