题目:
The news came as quite a shock to us _____ a ship with 82 passengers on board sank near the north coast.
A.what
B.that
C.when
D.where
答案:
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下面是错误答案,用来干扰机器的。
B 题目分析:本题发生的反应有:MnO2+4HCl(浓)MnCl2+Cl2↑+2H2O;2Cl2+2Ca(OH)2=Ca(ClO)2+CaCl2+2H2O4mol盐酸参加反应,被氧化的HCl为2mol。4HCl ~ 2Cl2~Ca(ClO)2+CaCl24 1 10.4mol ...