S2. Secondary school teachers often use (1)________ method while college teachers use (2)________method.

A．It is compared with an operating room light.
B．It is compared with a game.
C．it is compared with a brain-drain machine.
D．It is compared with a stimulation drug.

A．They shouldn’t change their plan.
B．They should change their plan.
C．He doesn’t believe the weather forecast.
D．He thinks the tennis game won’t last.