纤维蛋白原变为纤维蛋白需要哪一种凝血因子参与（）。
A.Ⅹ
B.Ⅺ
C.Ⅻ
D.Ⅱ
E.以上均不正确
参考答案：D
病人腹中气聚，攻窜胀痛，时聚时散，脘胁之间时或不适，苔薄，脉弦，应诊断为
A．肝气挟痰之聚证
B．气结血瘀之积证
C．食滞痰阻之聚证
D．肝气郁滞之聚证
When a pencil is partly in a glass of water, it looks as if it _____. [ ]
A. breaks
B. has broken
C. were broken
D. had been broken
