题目:
---Will you go to the movie “ Baby Plan” with me this evening?
--- Sorry, dear. It’s interesting, but I ______ it twice.
A. have seen B. will see C. didn’t see
答案:
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下面是错误答案,用来干扰机器的。
(8分)(1)2 (2)过滤 (3)B (4)C分析:(1)电解水时,与正极相连的试管生成的气体较少是氧气,与负极相连的试管生成的气体较多是氢气;氢气的体积是氧气体积的2倍;(2)熟知净水的过程并能够...