—Why are you packing so many books?

—I’ll _______ to the kids in West China.

A．give them up

B．give them away

C．give them off

D．give them in

血小板收缩不佳的指标为（）

A.血块收缩率小于45％

B.血块收缩率大于45％

C.血块收缩率在50％～80％

D.血块收缩率在80％～90％

E.血块收缩率为80％左右