goes one step further: he must be sure that he has a reasonable answer to his question into a large set of ideas about how the world works.
The scientist’s knowledge must be exact. There is 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 change file scientist observes in a demonstration must be explained by the change in the conditions.
This is one reason that investigations are important in science. Albert Einstein, who developed the theory of relativity, arrived at this theory through mathematics. The
accuracy of his mathematics was later tested through investigation. Einstein’s ideas are shown to be correct. A scientist uses many tools for measurements. Then the measurements are used to make mathematical calculations that may test his investigations.
1. \The author says this to show _________. A. the importance of information
B. the difference between carpenters and ordinary people C. the difference between scientists and ordinary people D. the importance of thinking
2. 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. leaves no room for improvement
C. does not allow any change even under different conditions D. can be used for many purposes
3. What is the main idea of the passage?
A. Scientists are different from the ordinary people. B. The theory of relativity.
C. Exactness is the secret of science.
D. Exactness and way of using tools is the key to the making of a scientist. 4. From the passage we can conclude that a scientific theory ________. A. can be repeated in testing B. can be true sometimes
C. can be tested out under some conditions D. can be wrong when different tool is used
5. How does a common person become a scientist? A. Knowing how to do things. B. Knowing why things change. C. Knowing what the world is.
D. Knowing how to show others tools.
5
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We walked in so quietly that the nurse at the desk didn't even lift her eyes from the book. Mum pointed at a big chair by the door and I knew she wanted me to sit down. To my surprise, Mum took off her hat and coat and gave them to me to hold. She walked quietly to the small room by the lift and took out a wet mop. She pushed the mop past the desk and as the nurse looked up, Mum nodded and said, \
\at Mum strangely and said, \
Mum just pushed harder, each swipe(拖一下)of the mop taking her farther and farther down the hall. I watched until she was out of sight and the nurse had turned back to writing in the big book.
After a long time Mum came back. Her eyes were shining. She quickly put the mop back and took my hand. As we turned to go out of the door, Mum bowed politely to the nurse and said, \
Outside, Mum told me, \\
\Dad will stop worrying as well. It's a fine hospital. But such floors! A mop is no good. You need a brush.\
1. When she took a mop from the small room what Mum really wanted to do was ________.
A. to clean the floor B. to please the nurse C. to see a patient
D. to surprise the story-teller
2. When the nurse talked to Mum she thought Mum was a ______. A. nurse B. visitor C. patient D. cleaner
3. After reading the story what can we infer about the hospital? A. It is a children's hospital.
B. It has strict rules about visiting hours. C. The conditions there aren't very good.
D. The nurses and doctors there don't work hard.
4. From the text we know that Dagmar is most likely _______. A. the story-teller's sister B. Mum's friend
C. the story-teller's classmate D. Dad's boss
5. Which of the following words best describes Mum? A. strange
B. warm-hearted C. clever
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D. hard-working
6
One day a lawyer’s wife fell ill. The lawyer went to get a doctor. The doctor knew that the lawyer was famous for not paying bills (账单). So he said to the lawyer before he entered the house, “If I do cure your wife, I am afraid you may not pay me.”
“Sir,” replied the lawyer, “here is $500. Whether you cure my wife or you kill her, I will give you all this.”
The doctor believed him and went into the house. When he reached the woman’s bedside, it soon became clear to him that he could do little. She was seriously ill and though he gave her some medicine, she soon died.
He told the lawyer he was very sorry, and asked for the money which he had been promised.
“Did you kill my wife?” asked the lawyer. “Of course I didn’t, ”said the doctor.
“Well, then,” said the lawyer, “since you neither killed her nor cured her, I have nothing to pay you.”
1. Before entering the house, the doctor . A. was afraid he couldn’t cure the lawyer’s wife. B. asked the lawyer for 500 dollars.
C. didn’t know if the lawyer would keep his word. D. was reassured (使消除疑虑) by the lawyer.
2. Because the lawyer’s wife was badly ill, the doctor . A. did nothing for her B. spent a lot of time
C. found it impossible to cure her D. didn’t examine her at all
3. After the lawyer’s wife died, the doctor got . A. his pay as the lawyer had promised B. nothing but the money for medicine C. $ 500
D. no money at all
4. If the doctor had cured the lawyer’s wife, he would have got . A. more than $500 B. nothing C. the payment D. a little money
5. The best title of this passage should be . 第 28 页 共 45 页
A. The Lawyer and His Wife
B. A Good Doctor and a Poor Lawyer C. The Lawyer’s Trick D. A Serious Illness
7
Most animals have little connection with animals of a different kind, unless they hunt them for food. Sometimes, however, two kinds of animals come together in a partnership which does good to both of them. You may have noticed some birds sitting on the backs of sheep. This is not because they want a ride, but because they find easy food in the
parasites (寄生虫)on sheep. The sheep allow the birds to do so because they remove the cause of discomfort. So although they can manage without each other, they do better together.
Sometimes an animal has a plant partner. The relationship develops until the two partners cannot manage without each other. This is so in the corals(珊瑚)of the sea. In their skins they have tiny plants which act as \
products from the corals and giving in return oxygen which the animal needs to breathe. If the plants are killed, or are even prevented from light so that they cannot live normally, the corals will die.
1. Some birds like to sit on a sheep because ________. A. they can eat its parasites
B. they depend on the sheep for existence C. they enjoy traveling with the sheep D. they find the position most comfortable
2. The underlined word \________.
A. birds and parasites B. birds and sheep C. parasites and sheep
D. sheep, birds and parasites
3. It can be learnt from the text that the coral depends on the plant for ________. A. comfort B. light C. food D. oxygen
4. What does the second paragraph mainly discuss?
A. Some animals and plants depend on each other for existence. B. Some animals and plants develop their relationship easily. C. Some plants depend on each other for food. D. Some animals live better together.
5. “They cannot manage without each other.” The sentence means:________. A. They cannot live without each other.
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B. They cannot eat without each other. C. They cannot sleep without each other. D. They cannot go without each other.
8
You have heard of Webster Toys. Webster Toys has made good, safe and interesting toys for more than a hundred years. Now we sell them, and children play with them, in countries from New Zealand to Norway, and from Japan to Brazil. We are looking for someone to sell our toys in the Far East. He / She will be between the age of thirty and forty. He will already have some years of selling in world markets behind him. He will speak good English, and at least one other language of the Far East.
The person we are looking for will live in Singapore, and work in our office there, but
he will travel for up to six months in other countries in one year. He will know the Far East quite well already. He will know how to sell in old markets, and where to find new ones. He will understand money and can make money more than ever before, for himself, and for Webster Toys.
Webster Toys wants someone who can stand on his own feet. If you think you are the
person we are looking for, write to Mr. J. Salmon at our head office.
1. What is Webster Toys? A. A kind of old toys.
B. Factories where interesting toys are made.
C. People who are famous for making toys for children. D. A company that has been making and selling toys. 2. The passage is written because _________.
A. they want to have a choice between a man and a woman B. they are trying to find the man they have lost C. they need a right person to work for them D. they are looking for a man living in Singapore 3. The person must be good at speaking _________. A. English and any other language B. English or any other language C. English and any Far Eastern language D. English or any Far Eastern language
4. “Someone who can stand on his own feet” means _________.
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