25（）

单项选择题Colorado now has told participants in the prepaid tuition plan that （）.

A．they would not have to make any other payment later
B．they would not be guaranteed against further payment
C．the plan would cover further tuition increases
D．the plan would be replaced by a guaranteed investment contract

单项选择题With respect to the advances in studying lie detection scientists think highest of （）.

A．simplifying the entire process of detection
B．the mechanic design of thermal cameras
C．substituting new approaches for polygraph
D．the discovery that one blushes while telling lies