神经肌肉本体促进法（PNF）中：慢反向-维持（）。

A.相互拮抗的肌肉的交替的等张收缩

B.接着作主动肌的等张收缩

C.拮抗肌与主动肌同时的等张收缩

D.增加运动模式中无力成分的活动范围与耐力

E.拮抗肌的等张收缩、松弛

—I don't know how to deal with these old books.

— _____  giving them to the children from poor families?[ ]

A. What about              

B. Why don't you

C. Shall we

D. Why not