Science fiction is a literature of the future based on our knowledge of the change from ______.

A．Athletes were murdered.
B．The Olympic Games were boycotted.
C．Athletes refused to participate the Games.
D．Athletes warned the Soviets.

A．It’s a new thing and people would like to try it out.
B．They have less time to attend traditional classes.
C．It would save a lot of money for the students.
D．Televised lessons are much easier to understand.