题目

在浓盐酸中H3AsO3与SnCl2反应的离子方程式为：3SnCl2＋12Cl－＋2H3AsO3＋6H＋===2As＋3SnCl＋6M，关于该反应的说法中正确的组合是     ( )①氧化剂是H3AsO3 ②还原性：Cl－>As ③每生成7.5 g As，还原剂失去的电子为0.3mol ④M为OH－ ⑤SnCl是氧化产物A．①③⑤        B．①②④⑤       C．①②③④        D．①③ Your dream will come true _____you put your heart and soul into it.A. as long as B. as far as C. as soon as D. as much as