关于室间隔缺损，不正确的是（）

A.膜部缺损最为多见

B.缺口处血流呈连续性高速血流

C.常引起左心容量负荷增加

D.需采用连续多普勒检测缺损口血流

E.CDFI显示缺口处左向右红色血流信号

Helen loves to talk about travel. She _____many places. [ ]

A. has gone to

B. has been to

C. has gone for

D. has been from