题目:
_________ to come earlier next time?[ ]
A. Would you mind
B. Would you like
C. Could you please
D. Could you mind
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:氢氧化钙的化学式是Ca(OH)2,A错;氯化钾的化学式是KCl,B错;硫酸铜的化学式是CuSO4,C对;氧化铁的化学式是Fe2O3,D错。