--How do you get to the city?
--I __ a plane to get there.[ ]
A. take
B. by
C. have
答案:A
拮抗维生素K作用抗凝血剂的药物是
A.维生素B12
B.肝素
C.卡络柳钠(安特诺新)
D.维生素C
E.双香豆素