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第6部分：完形填空(第51~65题，每题1分，共15分) 下面的短文有15处空白，请根据短文内容为每处空白确定1个最佳选项。 Robots May Allow Surgery in Space Small robots designed by University of Nebraska researchers may allow doctors on Earth to help perform surgery on patients in space. The tiny，wheeled robots， (51)are about 3 inches tall and as wide as a lipstick case，can be slipped into small incisions(切口)and computer-controlled by surgeons in different locations. Some robots are equipped (52)cameras and lights and can send images back to surgeons and others have surgical tools attached that can be (53)remotely. We think this is going to (54)open surgery，Dr Dmitry Oleynikov said at a news conference. Oleynikov is a (55)in computer-assisted surgery at the University of Nebraska Medical Center in Omaha. Officials hope that NASA will teach (56)to use the robots soon enough so that surgeries could one day be performed in space. On earth，the surgeons could control the robots themselves (57)other locations. For example，the robots could enable surgeons in other places to (58)on injured soldiers on the front line. Researchers plan to seek federal regulatory (59)early nest year. Tests on animals have been successful，and tests on humans in England will begin very soon. | 
