题目

下列离子方程式书写正确的是  （   ） A．用氨水吸收少量SO2气体：2NH3·H2O + SO2 ＝ 2NH4+ +SO32—+ H2O B．过氧化钠固体与水反应：2O22—＋2H2O ＝ 4 OH—＋ O2↑  C．NH4HCO3溶液与过量的NaOH溶液反应：NH4+ +OH—＝ NH3↑+ H2O D．Cl2通入水中：Cl2 + H2O ＝ 2H+ + Cl—+ ClO— 答案：AThe wounded soldier died _____I had a chance to know his name and family.A. after??????????? B. while??????????? C. until????? D. before