脾肿大最常见于哪种病变（）
A.寄生虫、肿瘤
B.炎症
C.肿瘤、门静脉高压
D.炎症、寄生虫
E.门静脉高压
参考答案：E
什么情况下乙烯精馏塔需切出系统？
The newly built café, the walls of _____ are painted light green, is really a peaceful place for us, specially after
hard work. [ ]
A. that
B. it
C. what
D. which
