I want to invite you and your father ________ to my dinner party           [     ]

A. will come          

B. come            

C. to come          

D. comes

一杯很烫的水，要是使这杯水冷却得快些，你准备采取哪些做法？请至少写出两种做法，并指出每种做法所应用的物理知识或原理。