問題詳情

      Traditional surgical procedures require surgeons to make large incisions in a patient’s body in order to gain access tothe internal organs. The patient then has to recover from the trauma of the surgical treatment and the large wound createdby the incision. In recent years, a surgical technique known as “keyhole surgery” has become popular. This techniqueeliminates the need for surgeons to make large incisions. Instead, a couple of small incisions, each measuring about onecentimeter, are made around the area to be operated on. Long instruments, which look a bit like chopsticks, are insertedthrough the tiny incisions and into the patient’s body. At the end of these instruments are small surgical tools. A tinycamera is also inserted into the body through one of the incisions. The camera relays an image of what is happeninginside the patient’s body to a large computer monitor, so doctors are able to see what is going on, and where to place thetools. The awkward part of keyhole surgery is that it is counterintuitive; if a surgeon wants to move the tool to the left, heor she must push it to the right, and vice versa.
47 The major difference between traditional surgery and keyhole surgery lies in _____.
(A) the use of computer
(B) the size of incisions
(C) the patient’s recovery time
(D) the use of surgical tools

參考答案

答案：B
難度：適中0.5
統計：A(0),B(1),C(0),D(1),E(0)

內容推薦

內容推薦