下面哪些是门脉高压的侧枝循环路径（）
A.脾静脉
B.副脐静脉
C.胃冠状静脉
D.肠系膜静脉
E.内乳静脉
参考答案：A, B, C, D
– I called you yesterday evening, but there was no answer.
--Oh, I am sorry. I __________ dinner in my friend’s home.
A．have
B．had
C．was having
D．have had
扑火火灾后要对火场进行全面细致的检查，消除余火和阴燃，排除险情和隐患，防止（）。
