题目

下列各组物质分别加入到足量的水中,最终能得到无色、透明溶液的是 A. NaOH NaCl  KN03  MgCl2       B. NaOH  Na2C03  NaCl H2S04 C. NaCl Na2S04 AgN03 HN03        D. FeS04  NaNO3  KC1  HCI 答案:BTom has injured his leg so he’s in _______ pain now. A. consistent    B. constant       C. enormous    D. considerable 
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