The computers made by our company sell best, but several years ago no one could have imagined the

role in the markets that they ________.[ ]

A. were playing  

B. were to play

C. had played  

D. played

幻觉是指

A．对客观事物的错误感知

B．对客观事物的胡思乱想

C．一种丰富想象的思维过程

D．在梦幻中的感觉

E．缺乏相应的客观刺激时的感知体验