单项选择题
Ask three people to look out the same window at a busy street comer and (1) you what they see. Chances are you will receive three (2) answers. Each person sees the same (3) , but each perceives (4) different about it.
Perceiving goes on in our minds. Of the (5) people who look out the window, one may say that he sees a policeman (6) a motorist a ticket. (7) may say that he sees a rush-hour traffic jam at the (8) . The third may tell you that he sees a woman trying to (9) the street with four children. For perception is the mind’s (10) of what the senses--in this case our (11) tell us.
Many psychologists today are working to try to determine just (12) a person experiences or perceives the world (13) him. Using a scientific (14) , these psychologists set up experiments (15) they can control all of the (16) . By measuring and charting the (17) of many experiments, they are trying to find out (18) makes different people perceive (19) different things about the (20) scene.
A.which
B.what
C.who
D.how