单选题 (Without) entering the body and (cause) damage, the CT is (far) superior (to) the X - ray or exploratory surgery.
A. Without B. cause C. far D. to

【正确答案】 B
【答案解析】[解析] 按照并列的原则,entering和cause应该并列作介词without的宾语,所以改“cause”为“causing”。