You must be careful when ___ on the highway.

A．you driving

B．are driving

C．driving

D．you were driving

血浆纤维蛋白原（FIB）比浊法与下列哪项有关（）。

A.纤维蛋白

B.血浆凝血酶原时间

C.凝血酶时间

D.D-二聚体

E.活化部分凝血活酶时间