题目

用凉水冷却滚烫的鸡蛋，鸡蛋内能是通过         的方式改变的．如果水的质量是lkg，初温为20℃，鸡蛋取出时水温为30℃，水吸收的热量为          J。[c水＝4.2×l03J/(kg·℃)] 答案：热传递    4.2×104It is said that ________ to classic music may be helpful in improving teenagers' taste．A.exposedB.exposingC.being exposedD.having exposed