41. He suggested that we put the scheme into effect, for it is quite ________. (A) probable (B) sustainable (C) feasible (D) eligible

38. 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.