81. According to Richard Satava, the application of virtual reality to medicine ____.

1. will enable surgeons to be physically present on every battlefield
2. can raise the spirits of soldiers wounded on the battlefield
3. will greatly improve medical conditions on the battlefield
4. can shorten the time for operations on soldiers wounded on the battlefield

82. Richard Satava has visions of ____.

1. using a remote-control technique to treat wounded soldiers fighting overseas
2. wounded soldiers being saved by doctors wearing virtual reality helmets on the battlefield
3. wounded soldiers being operated on by specially trained surgeons
4. setting up mobile surgical units overseas

83. How is virtual reality surgery performed?

1. It is performed by a computer-designed high precision device.
2. Surgeons wear virtual reality helmets to receive feedback provided by a computer.
3. Surgeons move robotic instruments by means of a computer linked to them.
4. A 3-D image records the movements of the surgeons during the operation.

84. During virtual reality operations, the surgeon can have a better view of the cuts in the body because ____.

1. he is looking at the cuts on a computer screen
2. the cuts can be examined from different angles
3. the cuts have been highly magnified
4. he is wearing 3-D glasses

85. Virtual reality operation are an improvement on conventional surgery in that they ____.

1. cause less pain to the wounded
2. allow the patient to recover more quickly
3. will make human surgeon's work less tedious
4. are done by robot surgeons with greater precision

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