单选题 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.

【正确答案】 C

【答案解析】由第4段"As surgeons watch...force，textures，and sound．"得出，外科医生通过操纵与计算机相连的仪器，由计算机将医生的操作传递给直接做手术的机械装置，所以选C。