While I was waiting to go into university, I saw in a newspaper a teaching job wanted at a school about ten miles from where I   16 . Because I was in great need of   17  and wanted to do something useful, I applied(申请).
Three days later, a letter   18 . It asked me to see the   19  at Croydon. It proved to be a(n)   20  journey —a train to Croydon station, a ten-minute bus ride and then a walk of   21  a quarter of a mile. As a result I arrived there, feeling too hot to be nervous. Clearly, the principal   22  opened the door. He was   23  and round.
“The school” he said, “has a group of twenty-four boys between seven and thirteen.”
I should have to teach all the   24  except art, which he taught himself. I should have to divide the class into  25  groups and teach them at three different   26 , and I was not    27  at the thought of teaching maths —a subject which I didn’t do very well in at school. It was   28  that I had to teach them on Saturday afternoon   29  most of my friends would be   30  themselves at that time.
Before I had time to ask about my salary(薪水), he got up to his feet. “Now,” he said. “you’d better meet my wife. She is the one who really runs this school.”

If I ask you to shut your eyes and gave you a piece of apple to eat, would you be able to tell me what it is just by tasting it? Of course, you could. Your tongue is covered with tiny “taste buds” which help you know what different foods taste like. Do you know that foods would taste different if you did not have a nose? This experiment shows how important your nose is when you taste things.

What You Need:

• a friend to help

• small pieces of any food like carrot, orange, banana

• small pieces of apple, raw(生的) potato, and onion

What You Do:

There are actually three different experiments. You and your friend should take turns to try them on each other.

Experiment 1:

Have your friend close her eyes and open her mouth.

Give her a piece of the food and ask her to taste it.

Then, ask her what she thinks it is. She will probably guess correctly.

Experiment 2:

While your friend has her eyes closed, give her a piece of the raw potato. At the same time, hold a piece of apple right under her nose. Ask her to eat the potato (but don’t call it by name) and tell you what she thinks it is. She will say it is a piece of apple!

Experiment 3: (for the brave)

Take a piece of raw onion. You don’t have to close your eyes this time. Squeeze your nose closed with your other hand so that no smells can get into your nose. Now take a nibble of the onion. Surprise! As long as you hold your nose, you will not be able to taste the onion.

The Science Secret

You already know the science secret. Your nose and your tongue work together to make food taste the way it does. Your tongue, however, can taste only certain flavors like salty, bitter, sour, and sweet. All of the other “tastes” are actually “smells,” and you need your nose to “taste” them. Oh, and you might use this science secret the next time you are told to eat something you don’t like the taste of. If you hold your nose while you eat it, you won’t “taste” it at all.

1.According to this article, what could a reader know about food?

A. People hold their noses to eat onions.           

B. If you can smell potatoes, you will taste apples.

C. People need a sense of smell to taste some food.  

D. If you close your eyes, food will taste better.

2.What is the most likely reason Experiment 3 is called “for the brave”?

A. You keep your eyes open.                           B. You have to eat a raw onion.

C. You have to squeeze your nose.                   D. You do the experiment alone.

3.What’s the best title of the passage?

A. Your Eyes Knows                               B. Your Nose Knows  

C. Your Mouth Knows                             D. Your Tongue Knows

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（场景）, but each perceives（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（罚单）. Another may say that he sees a rush-hour traffic jam at the intersection. The third may tell you that he sees a woman trying to cross the street with four children in tow（拉着）. For perception（感知） is the mind’s interpretation of what the senses—in this case our eyes—tell us.

　　 Many psychologists（心理学家） today are working to try to determine just how a person experiences or perceives the world around him. Using a scientific approach, 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.

1.Perceiving is an action that takes place _____.

2.People perceive different things about the same scene because ____.

3.Psychologists study perception by _____.

4.The best title for this article is _____.