已知一个三角形的三边长构成等比数列，其公比为x，则函数y=x2-5x的值域为（

 School education(教育) is very important and useful. Yet, no one can learn everything from school. A teacher, no matter how much he knows, can not 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 some facts or a formula（公式）. It is actually quite easy to learn a certain fact in history or a formula in math. But it is very difficult to use a formula in working out a math problem.

Great scientists didn’t get everything from school. For example, Edison didn’t even finish primary school. But they were all so successful. They invented so many things . The reason for their success was that they knew how to study. They read books that were not taught at school. They would ask many questions as they read. They did thousands of experiments. They worked hard all their lives, wasting not a single moment. Above all, they knew how to use their brain.

小题1:  According to the passage, the most important thing a teacher should do is _______.

A．to teach his students everything he knows

B．to teach the students how to think

C．to know everything they want to know

D．to teach the students how to work out a math problem小题2: To work out a math problem, you need to know _________.

A．a certain formula

B．a certain fact

C．some facts

D．the way to solve it小题3: Which of the following is NOT true?

A．Great scientists read a lot of books and asked many questions while reading.

B．Great scientists did thousands of experiments.

C．Great scientists always worked hard and never wasted time.

D．Great scientists got everything from school.小题4: The passage is written mainly to tell us         .

A．how to memorize some facts or a formula（公式）

B．who the great scientists are

C．How to study

D．why Edison didn’t finish primary school

A person may have an idea about himself that will prevent him from doing good work..

He may have the idea that he is not capable of it. It is easy to get such an idea even though there is no justification for it. A child may think he is stupid because he does not understand how to take the most of his mental faculties, or he may accept another person s mistaken estimate of his ability. Older people may be handicapped by the mistaken belief that they are incapable of learning anything new because of their age.

A person who believes that he is incapable will not make a real effort, because he feels that it would be useless. He won’t go at a job with the confidence necessary for success, and he won’t work hardest, even though he may think he is doing so. He is therefore likely to fail, and the failure will strengthen his belief in his incompetence.

Alfred Adler, a famous psychiatrist（精神病医生）, had an experience which illustrates this. When he was a small boy he got off to a poor start in arithmetic. His teacher got the idea that he had no ability in arithmetic, and told his parents what she thought in order that they would not expect too much of him. In this way, they too developed the idea, "Isn’t it too bad that Alfred can’t do arithmetic?" He accepted their mistaken estimate of his ability, felt that it was useless to try, and was very poor at arithmetic, just as they expected.

One day he became very angry at the teacher and other students because they laughed when he said he saw how to do a problem which none of the other students had been able to solve.

Adler succeeded in solving a problem. This gave him confidence. He rejected the idea that he couldn’t do arithmetic and was determined to show them that he could. His anger and his new found confidence stimulated him to be at arithmetic problems with a new spirit. He now worked with interest, determination, and purpose, and he soon became extraordinarily good at arithmetic. He not only proved that he could do arithmetic, but he learned early in life from his own experience that , if a person goes at a job with determination and purpose, he may astonish himself as well as others by his ability.

This experience made him realize that many people have more ability than they think they have. And that lack of success is as often the result of lack of knowledge of how to apply one’s ability, lack of confidence, and lack of determination as it is the result of lack of ability.

小题1:The underlined word “justification” most probably means ________.

A．reason

B．rightness

C．need

D．demand小题2:What is the main idea of this passage?

A．The basic principles in doing math problems.

B．Our idea about ourselves may have a negative influence on our work.

C．Our ideas do not always have and influence on us.

D．All actions are caused by impulse.小题3:What does Alfred Adler’s story tell us?

A．Many people have more ability than they think they have.

B．Anybody can become a mathematician, if he has determination.

C．Arithmetic is actually very easy.

D．Most teachers are wrong when they evaluator their students.小题4:Why did he become angry one day?

A．Because the teacher and other students laughed at him.

B．Because they challenged him to do a difficult arithmetic problem.

C．Because he couldn’t solve the arithmetic problem.

D．Because he was very poor at arithmetic.小题5:What idea did Alfred’s teacher have?

A．He was slow in arithmetic.

B．He should work harder.

C．He should be transferred to a special school.

D．He should not tell his parents that he was slow.

寒邪伤人，出现脘腹冷痛、呕吐等症的主要原因是（）

A.寒性凝滞，气血运行不畅

B.寒邪伤阳，直中脾胃

C.寒性收引，气血凝滞不通

D.寒性收引，经脉拘急

E.寒性黏滞，气机不畅

下列属于建设性冲突特征的是（）。

A.对工程项目目标不利

B.会使组织决策失误

C.会提高组织工作能力

D.会使冲突双方信任度下降