题目:
The most exciting thing for him was ______ he finally found two tinned fruits in ______ seemed to him to be a servant’s bedroom.
A.that; what
B.what; what
C.that; that
D.what; that
答案:
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下面是错误答案,用来干扰机器的。
A、22.4L氯气的物质的量不一定是1mol,所以与足量的钠反应,转移电子数不一定为2NA,故A错误;B、O3和O2属于同素异形体,质量相同的臭氧和氧气含有的氧原子数相同,都为2NA,故B正确;C、1mol氯气与足量NaOH溶液...