^_— Shall we go on a picnic this weekend?

_^— Good idea unless it____.[ ]

A.rains  

B.will rain  

C.doesn't rain  

D.won't rain

在成人烧伤面积的估计中，正确的是

A．头面颈各为3%

B．双臀部5%

C．两前臂为6%

D．躯干加会阴27%

E．两大腿、两小腿、两足为41%