What makes a person a scientist? Does he have ways or tools of learning that are different from those of others? The answer is “no”. It isn’t the tools a scientist uses but how he uses these tools which make him a scientist. You will probably agree that knowing how to use a power is important to a carpenter. You will probably agree, too, that knowing how to investigation, how to discover information, is important to everyone. The scientist, however, goes one step further; he must be sure that he has a reasonable answer to his questions and that his answer he gets to many questions is into a large set of ideas about how the world works.
The scientist’s knowledge must be exact. There’s no room for half right or right just half the time. He must be as nearly right as the conditions permit. What works under one set of conditions at one time must work under the same conditions at other times. If the conditions are different, any changes the scientist observes in a demonstration(实证) must be explained by the changes in the conditions. This is one reason why investigations are important in science. Albert Einstein, who developed the Theory of Relativity, arrived at the theory through mathematics. The accuracy(正确性) of his mathematics was later tested through investigation. Einstein’s ideas were proved to be correct. A scientist uses many tools for measurements. Then the measurements are used to make mathematical calculations(计算) that may test his investigations
【小题1】 What makes a scientist according to the passage?

A.The tools he uses.B.His ways of learning
C.The way he uses his toolsD.The various tools he uses
【小题2】 “…knowing how to investigation, how to discover information, is important to everyone.”
The writer says this to show ___________.
A.the importance of information
B.the difference between scientists and ordinary people.
C.the importance of thinking
D.the difference between carpenters and ordinary people
【小题3】 A sound scientific theory should be one that _________.
A.works under one set of conditions at one time and also works under the same conditions at other times
B.doesn’t allow any change even under different conditions
C.Can be used many times under different conditions
D.Can be used for many purposes
【小题4】 What is the main idea of the passage?
A.Scientists are different from ordinary people.
B.The Theory of Relativity.
C.Exactness is the core (核心) of science.
D.Exactness and way of using tools are the keys to making of a scientist.

How often one hears children wishing they were grown-ups and old people wishing they were young again. Each age has its pleasures and its pains, and the happiest person is the one who enjoys what each age gives him without wasting his time in useless regrets.
Childhood is a time when there are few responsibilities to make life difficult. If a child has good parents, he is fed, looked after and loved, whatever he may do. It is impossible that he will ever again in his life be given so much without having to do anything in return. In addition, life is always presenting new things to the child — things that have lost their interest for older people because they are too well-known. But a child has his parents. He is not so free to do what he wishes to do; he is continually being told not to do things or being punished for what he has done wrong.
When the young man starts to earn his own living, he can no longer expect others to pay for his food, his clothes, and his room, but has to work if he wants to live comfortably. If he spends most of his time playing about in the way that he used to as a child, he will go hungry. And if he breaks the laws of society as he used to break the laws of his parents, he may go to prison. If, however, he works hard, keeps out of trouble and has good health, he can have the great happiness of building up for himself his own position in society.
【小题1】 According to the second paragraph, the writer thinks that __________.

A.if much is given to a child, he must do something in return
B.a child is always loved whatever he does
C.life for a child is comparatively easy
D.only children are interested in life
【小题2】 After a child grows up, he __________.
A.will have little time playing
B.has to be successful in finding a job
C.can still ask for help in time of trouble
D.should be able to take care of himself
【小题3】 Which of the following statements is NOT true according to the passage?
A.Life is less interesting for old people.
B.People are often satisfied with their life.
C.Adults are free to do what they want to do.
D.Adults should no longer rely on others.
【小题4】The underlined word "responsibilities" in the second paragraph means __________.
A.jobsB.dutiesC.suggestionsD.desires
【小题5】 The main idea of the passage is __________.
A.life is not enjoyable since each age has some pains
B.young men can have the greatest happiness if they work hard
C.childhood is the most enjoyable time in one's life
D.one is the happiest if he can make good use of each age in his life

It`s not easy being a teenager (13—19岁的青少年)----- nor is it easy being the parent of a teenager. You can make your child feel angry , hurt, or misunderstood by what you say without realizing it yourself . It is important to give your child the space he needs to grow while gently letting him know that you’ll still be there for him when he needs you.

   Expect a lot from your child ,just not everything . Expect for health and safety problems , such as drug use or careless driving, consider everything else open to discussion . If your child is unwilling to discuss something , don’t insist he tell you what’s on his mind . The more you insist , the more likely that he 'll clam up   . Instead, let him attempt to solve(解决)things by himself. At the same time, remind him that you’re always there for him should he seek advice or help. Show respect for your teenager’s privacy(隐私).Never read his mail or listen in on personal conversations.

   Teach your teenager that the family phone is for the whole family . If your child talks on the family’s telephone for too long., tell him he can talk for 15 minutes ,but then he must stay off the phone for at least an equal period of time. This not only frees up the line so that other family members can make and receive calls , but teaches your teenager moderation(节制) .Or if you are open to the idea, allow your teenager his own phone that he pays for with his own pocket money or a part—time job.

1.The main purpose of the text is to tell parents ________.

A. how to get along with a teenager

B. how to respect a teenager

C. how to understand a teenager

D. how to help a teenager grow up

2.What does the phrase “clam up ” in Paragraph 2 probably mean?

A. become excited  B.show respect   C. refuse to talk   D. seek help

3.The last paragraph is about how to teach a teenager __________.

A. to use the phone in a sensible way

B. to pay for his own telephone

C. to share the phone with friends

D. to answer the phone quickly

4.What should parents do in raising a teenager according to the text?

A. Not allow him to learn driving or take drugs.

B. Give him advice only when necessary

C. Let him have his own telephone

D. Not talk about personal things with him

 

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