题目

 (    )55. Could you tell me _________?      A. how old is your son                 B. that he will come here soon.      C. whether is it fine tomorrow.  D. who is going to speak at the meeting 答案：D化学实验中有一种加热方法叫“热水浴”(如图所示)．针对这种加热方式，下列说法中错误的是 [　　] A．试管内试剂受热温度一般不超过100℃ B．试管内试剂受热比较均匀(与用酒精灯直接加热相比) C．试管底部必须接触到烧杯底部才能充分加热试管中的试剂 D．将烧杯内的水换成食盐水，试管内试剂受热温度可能会高100℃