____ the temperature might drop, coal was prepared for warming.

A．To consider

B．Considered

C．Considering

D．To be considered

一艘轮船从长江驶入东海，海水的密度比江水的大，那么轮船 　 [     ]

A． 受到的浮力不变

B． 受到的浮力增大

C． 沉下一些

D． 浮起一些