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15 答案是B, 但我觉得有明显错误啊whether or not，难道忽略不计么？ C错在哪里，至少觉得比B好啊～～～ 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 not any better or heart attack patients than the balloon procedure by itself. A. more research was needed to determine that balloon angioplasty preceded with ultrasound was not any better or heart attack patients than B. more research was needed for determine 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 to determine that balloon angioplasty preceded by ultrasound is or is not any better for heart attack patients than is
25 不明白E为何不对，不是更简洁么？？答案是A 那个then在里面有用意么？ According to entomologists, single locusts are quiet creatures, but when locusts are placed with others of their species, they become excited, change color, vibrate, and even hum. A. when locusts are placed with others of their species B. when placing them with others of their species, then C. locusts, when placed with others of their species, D. placing them with others of their species, E. placed with others of their species, then
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发表于 2006-7-5 16:05:00
