You really don't know what we ______ while we were working on this project . A . went through B . go through C . go across D . go down 答案:A
下图是水分子在一定条件下分解的示意图,从中获得的信息不正确的是
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A.一个水分子由两个氢原子和一个氧原子构成
B.水分解后生成氢气和氧气的分子个数比为2∶1
C.水分解过程中,分子的种类不变
D.水分解过程中,原子的数目不变