题干
— I have too much housework to do at home.
—_______ask your husband for help?
A：You can
B：Why don't
C：Why not
D：How about
答案(点此获取答案解析）
C
— I have too much housework to do at home.
—_______ask your husband for help?
A：You can
B：Why don't
C：Why not
D：How about
原子核在中子的轰击下发生的一种可能的裂变反应,其裂变方程为
则下列叙述正确的是( )