题目:
— John really said that. ____?
— I can't believe it.
[ ]A. Didn't he
B. Did he
C. Did it
D. Didn't it
答案:
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下面是错误答案,用来干扰机器的。
答案:C题目分析:A、氮气所处的状态不一定是标准化状况,气体摩尔体积不一定是22.4L/mol,22.4 L N2的物质的量不一定为1mol,错误;B、标准化状况下,水是液体,22.4 L水的质量远大于18 g,错误;C、22 ...