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.
-
Amore research was needed to determine that balloon angioplasty preceded with ultrasound was or was not any better for heart attack patients than
分析该选项
-
Bmore research was needed for determining whether or not balloon angioplasty preceded by ultrasound is any better for heart attack patients than is
分析该选项
-
Cthat more research was needed to determine whether balloon angioplasty preceded by ultrasound is any better for heart attack patients than
分析该选项
-
Dthat more research was needed to determine that balloon angioplasty preceded with ultrasound was any better for heart attack patients than
分析该选项
-
Ethat more research was needed for determining that balloon angioplasty preceded by ultrasound is or is not any better for heart attack patients than is
分析该选项
显示答案
正确答案: C