单项选择题

How is virtual reality surgery performed

A．It is performed by a computer-designed high precision device.
B．Surgeons wear virtual reality helmets to receive feedback provided by a computer.
C．Surgeons move robotic instruments by means of a computer linked to them.
D．A 3-D image records the movements of the surgeons during the operation.
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单项选择题
Richard Satava has visions of _______.
A．using a remote-control technique to treat wounded soldiers fighting overseas
B．wounded soldiers being saved by doctors wearing virtual reality helmets on the battlefield
C．wounded soldiers being operated on by specially trained surgeons
D．setting up mobile surgical units overseas
单项选择题
According to Richard Satava, the application of virtual reality to medicine _______.
A．will enable surgeons to be physically present on every battlefield
B．can raise the spirits of soldiers wounded on the battlefield
C．will greatly improve medical conditions on the battlefield
D．can shorten the time for operations on soldiers wounded on the battlefield
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