门静脉高压症患者并发门静脉高压性胃病的比例为（）
A.约80％
B.约70％
C.约50％
D.约40％
E.约20％
参考答案：E
—When shall we go to Yunnan?
—Let’s ______ it ______ Monday. [ ]
A. make; in
B. meet; on
C. make; on
D. meet; in
封闭式基金的投资管理要比开放式基金复杂。( )
