题目

It's our first day of school and we have 1. A . Lesson B . Class C . the Lesson D . the Class 答案:A将下列物质分别加到水中充分溶解,其中会使溶液温度明显降低的物质是(  )A.硝酸铵固体B.氢氧化钠固体C.98%的硫酸D.食盐固体
英语 试题推荐