维生素K参与合成
A．凝血因子Ⅷ、Ⅺ和Ⅻ
B．凝血酶原和凝血因子Ⅶ、Ⅸ、Ⅹ
C．血栓调节蛋白
D．血小板
E．凝血因子Ⅻ
参考答案：B
Do you want __________ with me?
A．go shopping
B．to go shop
C．to go shopping
D．going shopping
Victor apologized for ______ to inform me of the change in the plan. [ ]
A. his being not able
B. him not to be able
C. his not being able
D. him to be not able
