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.
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
B后面的IS确实是错的,因为这里是主系表结构,根据白勇的书上讲,可以不补is. 但CDE的that加上后,如果理解为和前面that平行,意思实在不通。。如果是but做连词讲,那么肯定不对。 B 中的for doing 和whether or not 我觉得是不是相对错误啊? 我记得之前做prep时也有的题可以选择whether or not。