题目

K35ClO3晶体与H37Cl浓溶液发生反应生成氯气、氯化钾和水．则此反应生成的氯气的相对分子质量为（ ） A．70.6      B．73      C．73.3     D．74 答案：C　 -- Did you tell him the news? -- Yes, I told him ________ I saw him. [　　] A．as long asB．while C．immediatelyD．unless