Signs can sometimes be seen at the entrance of a house, expressing that a tramp（流浪汉）has passed. This special sign-language is frequently   50   by tramps to inform their    51   whether the host of a certain house is friendly or unfriendly, and to   52   them the trouble of making unnecessary calls.

Quite   53   one day, I came across a real tramp. He was such a rare sight these days that I stood some distance away and watched him. He was dressed just as a tramp should be in, old worn trousers, and a jacket many sizes too big for him. On his head there was a battered old hat and his boots were so old and worn; they were almost coming into pieces.

But the man himself looked cheerful as if he had not a   54   in the world. He rubbed his nose with his forefinger,    55   a funny turn, laid a small parcel    56   the front gate, and began   57   a sign made by a former caller. Although the sign was meaningless to me, it must have been   58  , for the tramp’s face lit up with satisfaction. He entered the front gate   59   and rang the bell. When the door opened, I saw him raise his hat   60   couldn’t hear his words. The   61   was very short indeed, for no sooner had he spoken a few words than the door closed fiercely in his face.

I felt   62   for him as he walked sadly out of the house. But just as quickly, his face lit up again and he moved quickly towards the gate. There he stopped, looked at the sign, and shook his head seriously as if he had made a bad mistake.   63   deeply into his pockets, he produced a piece of chalk, rubbed out the existing sign and made a new one in its place. He stared at it for a moment smiling to himself, then gathered his belongings, pushed back his hat and began walking towards the next house at an unhurried   64  , whistling as he went along.

1.                A．employed       B．made          C．taken D．put up

2.                A．coaches        B．classmates       C．fellows   D．friends

3.                A．share          B．save           C．give D．urge

4.                A．in a way        B．by mistake       C．by the way D．by chance

5.                A．success         B．care           C．failure    D．responsibility

6.                A．gave           B．launched        C．set  D．made

7.                A．by             B．to             C．in   D．behind

8.                A．drawing        B．kissing          C．correcting D．studying

9.                A．sad            B．strange         C．funny    D．exciting

10.               A．confidently      B．innocently      C．consequently   D．consciously

11.               A．and           B．but            C．however  D．therefore

12.               A．conversation    B．introduction     C．argument  D．greeting

13.               A．happy          B．frightened      C．capable   D．sorry

14.               A．Digging         B．Stealing        C．Putting    D．Looking

15.               A．step           B．position        C．pace  D．situation

I first met Mr. Smith in America. He ______ at Stanford University then.

   A. studied                  B. has studied   

   C. is studying              D. was studying

Many people go to school for an education. They learn languages, history, geography, physics, chemistry and mathematics. Others go to school to learn a skill so that they can make a living. School education is very important and useful. Yet no one can learn everything from school. A teacher, no matter how much he knows, cannot teach his students everything they want to know. The teacher’s job is to show his students how to learn. He teaches them how to read and how to think. So, much more is to be learned outside school by the students themselves.

It is always more important to know how to study by oneself than to memorize (记住) some facts or a formula (公式). It is usually quite easy to learn a certain fact in history or a formula in mathematics. But it is very difficult to use a formula in working out a maths problem. Great scientists, such as Einstein, Newton and Galileo didn’t get everything from school. But they were all so successful. They invented so many things for mankind.   Above all, they knew how to use their brains.

1.Whether a teacher is more _______or less, he can’t teach his students everything they want to know.

A．knowledgeable     B．useful            C．difficulty          D．important

2.A teacher’s job is mainly to train his students to master the ability of ________.

A．learning by themselves                   B．making a living

C．reading and thinking                     D．studying all the subjects

3.The reason for scientists’ success is that _______.

A．they read books that were not taught at school

B．they knew how to use their brains

C．they wasted not a single moment

D．they worked all their lives

 ____ volcanoes now for many years, I am still amazed at their beauty as well as their potential to cause great damage.

A．Studied           B．To study           C．Having studied      D．Studying

Ask three people to look out the same window at a busy street comer and tell you what they see. Chances are you will receive three different answers. Each person sees the same scene, 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. 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. For perception(感知) is the minds’ 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 ______.