维生素K可______。
A．溶解血栓B．引起出血C．抗凝血D．止血E．抑制血小板
参考答案：D
Chinese people drink _____ beer per person now as they did 10 years ago.[ ]
A. more than twice
B. twice as
C. more than twice as much
D .twice the number of
导致粘连性肠梗阻最常见的病因是
A．腹腔内创伤
B．腹腔内异物
C．腹腔内手术
D．腹腔内出血
E．腹腔内炎症
