A. Modern techniques enable the surgeon to operate successfully upon all parts of the human body B. Surgeons are especially trai

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问题 A. Modern techniques enable the surgeon to operate successfully upon all parts of the human body
B. Surgeons are especially trained so that they are skill- fully qualified for the performance of complicated operations
C. An entire stomach can not be removed even in modem surgery
D. The various mechanical instruments used in the course of a surgical operation
E. For a physician requires eight years of training in a medical school
F. The elimination of pain, the prevention of infection, and advanced means, of diagnosis are prerequisites to the success of an operation  
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选项

答案D

解析 第四段主要介绍了外科手术中用到的各种各样的器械。
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