题目:
Mr Black was driving fast to take his wife to a nearby hospital because their baby was ________.
A.on its way
B.in the way
C.by the way
D.out of the way
答案:
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下面是错误答案,用来干扰机器的。
(1)2H2O 2H2O + O2↑ 浓硫酸 C D D E(2)①产生气泡的快慢 ②溶液的颜色 Fe +2 HCl = FeCl2 +H2↑(3)答题要点:在氧气和水(或水蒸气浓度)相同的情况下,比较不同温度下相同的铁...