GWD30--29

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Researchers agreed that the study of new treatments for heart attack patients was extremely important but more research was needed to determine that balloon angioplasty preceded with ultrasound was or was not any better for heart attack patients than the balloon procedure by itself.



A    more research was needed to determine that balloon angioplasty preceded with ultrasound was or was not any better for heart attack patients than
B     more research was needed for determining whether or not balloon angioplasty preceded by ultrasound is any better for heart attack patients than is
C    that more research was needed to determine whether balloon angioplasty preceded by ultrasound is any better for heart attack patients than
D     that more research was needed to determine that balloon angioplasty preceded with ultrasound was any better for heart attack patients than
E    that more research was needed for determining that balloon angioplasty preceded by ultrasound is or is not any better for heart attack patients than is

答案给的是B，但是我觉得应该是C吧，请讨论。

zhangluE

弱的问一下关于你提到的 加不加is的问题：

he is older than his brother
he is older than is his brother
he is older than his brother is
哪个是对的啊？？？？

parispings

我也记得新东方老师说过的whether or not是一种不必要的形式

但是C里面的is没有补出哦

那么到底这两个哪个比较重要一点呢???

大家继续讨论...

MarilynR

好象 gmat里不用 whether or not

我也觉得是C

agree that...but that...