A.People should appreciate such shopping. B.People should make it a Season of Celebration. C.People should give out their belongings. D.People should show their kindness to others.
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举一反三
【单选题】下面二个反应: Zn + 2H + = Zn 2+ + H 2 Δ r H m1 Θ 1/2Zn+H + = 1/2Zn 2+ +1/2H 2 Δ r H m2 Θ 的Δ r H m1 Θ 与Δ r H m2 Θ 的关系是: