对肝癌的临床诊断最具特异性的是（）
A.肝区疼痛
B.进行性肝大，质硬
C.恶病质
D.梗阻性黄疸
E.肺部转移病灶
参考答案：B
— I ____ to your birthday party last Sunday.
— Unfortunately, you were out on business.
A．had come
B．came
C．would come
D．would have come
下列（）不是横道图主要组成部分。
A、工序
B、工程量
C、路线
D、工竣工时间
