【答案】

7. A 8. C

【原文】

（7）US doctors from Duke University warn that relying on standard X-rays alone to give a clean bill of health could lead to wrong diagnoses and law suits.（美杜克大学的医生警告说仅依靠标准X光检查身体，有可能导致错误的诊断和法律起诉。）（8）When they re-checked the X-ray results of 92 patients using a more detailed scanner, called MRI, they found 35 fractures that had been missed.（当他们用MRI对92位病人的X光检测结果重新验证时，发现共有35处骨折没有被检查到。）The findings are published in the American Journal of Roentgenology. Dr. Charles Spritzer, who led the research, said: "The diagnosis of traumatic fracture most often begins and ends with X-rays of the hip, pelvis, or both. In some cases though, the exclusion of a traumatic fracture is difficult."