题目内容：
根据下列文章,请回答题。Robots May Allow Surgery in SpaceSmall 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 __________ (52) with cameras and lights and can send images back to surgeons and others have surgical _________ (53) attached that can be controlled remotely.
"We think this is going to _________ (54) open surgery," Dr. Dmitry Oleynikov said at a news conference. Oleynikov is a specialist _________ (55) 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 _________ (57) the robots themselves from other locations. For example, the robots could _________ (58) surgeons in other places to work on injured soldiers on the front line. Researchers plan to seek federal regulatory (联邦管理局的) _________ (59) early next year. Tests on animals have been successful, and tests on humans in England will begin very soon.
The camera-carrying robots can provide _________ (60) of affected areas and the ones with surgical tools will be able to maneuver (操控) inside the body in ways surgeons' hands can't. The views from the camera-carrying robots are better than the naked eye, because they send back color images that are magnified (放大). Because several robots can be _________ (61) through one incision, they could reduce the _________(62) and size of cuts needed for surgery, which would _________ (63) recovery time. This is particularly helpful to those patients who have been debilitated (使虚弱) by long illness.
Eventually, Oleynikov said, the tiny robots may enable surgeons to _________ (64) without ever placing their hands in patients' bodies. "That's the:goat,” Oleynikov said. "It's getting easier and easier. We can do even more with these ___________ (65)." A．that
B．where
C．since
D．which
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