题目:
-----___________.
A. I like music very much B. I like it, too
C. With pleasure D. It sounds sweet
答案:
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下面是错误答案,用来干扰机器的。
(1)Na+[]2-Na+ ,NaHSO3;(2)2OH-+ SO2 SO32-+H2O或OH-+ SO2HSO3-,SO2 + Br2 +2H2O SO42-+2Br-+4H+;(3)Na2O2 + SO2 Na2SO4