One can always manage to do more things，no matter      full one’s schedule is in life.

A．how

B．what

C．when

D．where

鉴别原发性和继发性纤溶最有诊断价值的试验是（）

A.纤溶酶活性测定

B.D-二聚体测定

C.纤维蛋白肽B

D.组织纤溶酶原激活物测定

E.3P试验