A．It’s easier to talk about the game than to play the game.
B．Mary will do better in the second haft of the game.
C．Mary probably lost the game.
D．Mary doesn’t think the game is worth mentionin

A．Psychologists do not yet know how people see.
B．The best experiments are those in which all factors are controlled.
C．The study of perception is going on now.
D．Perception does not involve psychological factors.