题型:问答题 简答题 The manager, ______ it clear to us that he didn't agree with us, left the meeting room. [ ]A. who has made B. having made C. made D. making 查看答案
题型:问答题 简答题 下列有关实验操作和现象说法中合理的是( )A.将实验剩余的药品放回原试剂瓶B.用尝味道的方法区分实验室中的食盐和蔗糖C.磷在氧气中燃烧,产生大量烟雾,并有白色固体生成D.铁丝在氧气中燃烧,火星四射,并有黑色固体生成 查看答案