Ask three people to look out the same window at a busy street corner and tell you what

they see.Chances are you will receive three different answers.Each person sees the same scene, but each perceives(感觉、察觉) something different about it.

Perceiving goes on in our minds.Of the three people who look out the window, one may say that he sees a policeman giving a motorist a ticket.Another may say that he sees a rush-hour traffic jam at the crossing.The third may tell you that he sees a woman trying to cross the street with four children.For perception is the mind's explanation of what the senses - in this case our eyes - tell us.

Many psychologists today are working to try to decide just how a person experiences or perceives the world around him.Using a scientific method, these psychologists set up experiments in which they can control all of the factors.By measuring and charting the results of many experiments, they are trying to find out what makes different people perceive totally different things about the same scene.

31.Seeing and perceiving are().

A.the same action

B.two separate actions

C.two actions carried on entirely by the eyes

D.several actions that take place at different time

32.Perceiving is an action that takes place().

A.in our eycs

B.only when we think very hard about something

C.only under the direction of a psychologist

D.in every person's mind

33.People perceive different things about the same scene because().

A.they come from different countries

B.they can't agree about things

C.some have better eyesight

D.not clearly mentioned in the passage

34.Psychologists study perception by().

A.setting up many experiments

B.asking each other what they see

C.looking out of the window themselves

D.studying the differences in people's eyes

35.The best title for this passage is().

A.How We See

B.Learning About Our Minds Through Science

C.What Psychologists Perceive

D.How to Become an Experimental Psychologist