题目

Could you tell me       ?     A. what time is it                 B. that if the earth goes around the sun     C. where he lives in               D. whether it will rain tomorrow 答案：D水的比热容c=4.2×103    ，水结冰后它的比热容将    （填“改变”或“不变”）；把2kg的水从20℃加热到100℃，水吸收的热量为    J．