[讨论]GWD-30-29 搜索答案

新CD22上的答案是B

经搜索网页http://query.nytimes.com/gst/fullpage.html?res=9C07EEDF1038F93AA25750C0A961958260&sec=&spon=&pagewanted=all

得到原句：Dr. Robert Siegel of Cedars Sinai Hospital in Los Angeles, who has also studied ultrasound in blocked arteries, said that Dr. Rosenschein's study was extremely important but that more research was needed to determine whether ultrasound followed by balloon angioplasty is any better for heart attack patients than the balloon procedure by itself.

依此，答案应为C

希望对大家小有帮助，早日杀G