Zinc(锌) is one of about 20 elements necessary for good health. It is present in the body in a very small amount but makes it possible for important chemical actions to be carried out in cells. Scientists are just beginning to discover how zinc and other elements work.
Researchers first studied zinc as a way to speed recovery. Dr. Waltor Powys formerly with the United States Air Force noted that the laboratory animals recovered faster when some matters were added to their food. One of these matters was zinc. Dr. Powys later tested the zinc treatment on an American airman recovering from medical operations. The airman who received zinc sulphate(硫酸盐) recovered in half of the usual time. Other doctors studied persons who had a number of strange disorders. The doctors learned that all of these problems were caused by lack of zinc in the body. They treated these disorders successfully by giving the patients zinc sulphate.
The amount of zinc in the body can be found by examining blood and hair. A lack of this important element is not uncommon among people in both industrial and developing countries. Zinc is found in most high protein(蛋白质) foods such as meat, milk, fish and eggs. It is also found in whole grains. But many people do not eat enough of these food. Food markets should add these elements so that more people could get needed amount of these necessary matters.
1. Which of the following statements is true?
A. Scientists found how zinc works a long time ago.
B. People need a large amount of zinc to be healthy.
C. Zinc allows important chemical actions to take place in cells.
D. Zinc must be used in the course of medical operation.
2. One of the results from the study of zinc is that _______.
A. there’s only a little zinc in the human body
B. food rich in protein contains more zinc
C. some physical problems are caused by lack of zinc
D. any patient who receives zinc sulphate gets well immediately
3. The best title for the passage may be _______.
A. A New Discovery B. Zinc and Health
C. How Zinc Works D. Add Zinc to Your Food
It doesn’t matter when or how much a person sleeps, but everyone needs some rest to stay alive. That’s what all doctors thought, until they heard about Al Herpin. Al Herpin, it was said, never slept. Could this be true? The doctors decided to see this strange man themselves.
Al Herpin was 90 years old when the doctors came to his home in New Jersey. They thought for sure that he got some sleep of some kind. So they stayed with him and watched every movement he made. But they were surprised. Though they watched him hour after hour and day after day, they never saw Herpin sleeping. In fact, he did not even own a bed. He never needed one.
The only rest that Herpin sometimes got was sitting in a comfortable chair and reading newspapers. The doctors were puzzled by his strange continuous sleeplessness. They asked him a lot of questions, hoping to find an answer. They found only one answer that might explain this question. Herpin remembered some talk about his mother having been injured several days before he was born. But that was all. Was this the real reason? No one could be sure.
Herpin died at the age of 94.The doctors came to Herpin’s home in order to __________.
| A．treat him for his illness |
| B．find the reason why some old people didn’t need any sleep. |
| C．get some proof to show his sleeplessness was not really true. |
| D．help him to have a rest in some day. |
After watching him closely, the doctors came to believe that Al Herpin ________.
| A．needed some kind of sleep. |
| B．needed no sleep at all. |
| C．was too old to need any sleep. |
| D．often slept in a chair. |
Al Herpin’s condition could be regarded as ___________.
| A．an unusual one | B．a common one |
| C．very healthy | D．very funny |
The main idea of this passage is that ____________.
| A．large numbers of people do not need sleep |
| B．everyone needs some sleep to stay alive |
| C．people can live longer by trying not to sleep at all |
| D．a person was found who actually didn’t need any sleep |
After we meet people, it is up to us to make them our friends．Let us stop a moment and consider what really makes a friend. The major qualities like faithfulness, devotion, friendliness，flash through our minds. But it is the large number of very small particular qualities that make up one’s whole character, such as cheerfulness, friendliness and punctuality. After all, “to make a friend, be a friend” is not such a big and difficult order. There are particular favorable qualities, which attract others to us, and some fundamental psychological do’s and don’ts．
If you are in the presence of a shy person, talking and asking casual questions may bring him out of his shell. Think of what would be most acceptable to the other person for you to talk, or to listen. Either way, the goal is to make yourself pleasant．
Always remember to listen, but listen intelligently. To have anyone “hang on our words” is the most unnoticeably clever way in the world to please somebody．For a few extremely happy seconds we are the center of attraction，but when it is our turn to be audience，let us remember how we felt as the actor，and let’s be genuinely interested in what the other fellow is saying．
Other people will like us, if we like them. If you want friends, keep your mind and heart open to friendship. Be alive to the other person’s world．This passage is mainly about________.
| A．the way of talking to a shy person |
| B．some favorable qualities to be a psychologist |
| C．how to make yourself attractive to listeners |
| D．how to make a friend and be a friend |
The underlined part “bring him out of his shell” in the second paragraph most probably means________.
| A．make him become active | B．make him feel more nervous |
| C．help him understand the question better | D．help him listen intelligently |
According to the passage，an important way in making friends is to________.
| A．attract them | B．be attracted | C．listen attentively | D．talk widely |
Of the qualities in a friend，which of the following is NOT mentioned in the passage?
| A．Faithfulness. | B．Devotion． | C．Punctuality. | D．Unselfishness. |
How can a creature weighing over 5 tons and normally taking 150 kilograms of food and 120 liters of water per day survive in a desert environment?
In the southwest African country of Namibia, and the Sahara lands of Mali further north, the desert elephant does just that.
Although not regarded as a separate species from the African elephant, the desert cousin differs in many ways. Their bodies are smaller, to absorb less heat, and their feet are larger for easier walking across sandy surfaces, they are taller, to reach higher branches. They have shorter tusks（象牙）, and most importantly, longer trunks to dig for water in riverbeds.
Desert elephants can travel over 70 kilometers in search for feeding grounds and waterholes, and have a larger group of families. They drink only every 3 –4 days, and can store water in a “bag” at the back of their throat, which is only used when badly needed. Desert elephants are careful feeders – they seldom root up trees and break fewer branches, and thus maintain what little food sources are available. Young elephants may even eat the dung（粪便）of the female leader of a group when facing food shortage.
During drought they are unlikely to give birth to their young but with good rains the birthrate will increase greatly. Desert elephants have sand baths, sometimes adding their own urine（尿液）to make them muddy!
As we continue to overheat our weak planet, it can only be hoped that other animal species will adapt as extraordinarily well to change as the desert elephant.The underlined part in Paragraph 2 means “ ”.
| A．remains in the African countries | B．drinks 120 liters of water a day |
| C．manages to live in desert areas | D．eats 150 kilograms of food daily |
Desert elephants are called careful feeders because they _________.
| A．rarely ruin trees | B．drink only every 3-4 days |
| C．search for food in large groups | D．protect food sources for their young |
The author answers the question raised in the first paragraph with __________.
| A．stories and explanation | B．facts and descriptions |
| C．examples and conclusion | D．evidence and argument |
What can be inferred from the last sentence in the passage?
| A．Overheating the earth can be stopped. |
| B．Not all animal species are so adaptable. |
| C．The planet will become hotter and hotter. |
| D．Not all animals are as smart as desert elephants. |
Dad came in the midnight. We heard every sound, but we pretended to be asleep.
Next morning he looked weak and thin, sitting in a chair by the kitchen fire. The light of the fire shone through his long empty sleeve. Everything went as usual. Grandma found something to do in the bedroom. Grandpa went out for some water. Mother, with her back to us, was getting the cakes ready for breakfast.
But nothing was right. When grandma came out of the bedroom, she walked on tiptoe. When grandpa came back, he said nothing about the weather. At breakfast Mother passed us the fruit and said something, but her voice was too high.
At last my sister, Lou, pushed back her chair. “It’s your turn to wash the dishes.” But I had washed the dishes the night before. I said nothing because it was not right to quarrel in front of Dad just home with the empty sleeve.
“It is your turn,” Lou said again. I looked at her in surprise.
“It is not,” I said because I suddenly remembered Mother had told us to go on as usual.
“Children, children,” Mother said in a quiet, glad kind of voice.
And Dad was smiling because he felt at home at last.What do you know happened to Dad in the story?
| A．He was badly ill. | B．He had a long journey. |
| C．He drank too much. | D．He lost one of his arms. |
The family when they saw Dad’s empty sleeve.
| A．was too surprised to do anything | B．felt sad and cried a lot |
| C．tried not to show their feelings | D．showed no worry at all |
From the story, we know .
| A．the two sisters often quarreled about who should wash the dishes |
| B．the family liked seeing the two sisters quarrelling after breakfast |
| C．Dad loved the two sisters very much though they often quarreled |
| D．Mother told the two sisters to quarrel with each other the night before |
Which of the following can be the best title of the story?
| A．The Quarrelling Sisters | B．Dad Was Back |
| C．After the Accident | D．An Empty Sleeve |
One day Mrs. Perry said to her husband, “Jack, there is a meeting of our ladies’ club at Mrs. Young’s house at lunch time today. And I want to go to it. I’ll leave you some food for your lunch. Is that all right?”
“Oh, yes,” her husband answered, “that’s quite all right. What are you going to leave for my lunch?”
“This tin of fish.” Mrs. Perry said. “And there are some cold boiled potatoes and some beans here, too.”
“Good,” Mr. Perry answered. “I’ll have a good lunch.”
So Mrs. Perry went to her meeting. All the ladies had lunch at Mrs. Young’s house, and at three o’clock she came home.
“Was your fish nice?” asked she.
“Yes, but my feet are hurting,” he answered.
“Why are they hurting?”
“Well, the words on the tin were Open the tin and stand in hot water for five minutes.”Mrs. Perry went to the meeting because .
| A．she had something to do with the ladies’ club | B．she was a member of the ladies’ club |
| C．she wanted to join the club | D．she was a friend of Mrs. Young’s |
Mrs. Perry left some food for Jack’s lunch because .
| A．she didn’t like cooking | B．Jack knew nothing about cooking |
| C．she wanted Jack to have a good time | D．she wanted to go to the meeting very much |
Jack had his feet hurt .
| A．when he was opening the tin | B．when he was helping himself to the fish |
| C．before he opened the tin | D．after he opened the tin |
“Open the tin and stand in hot water for five minutes” means .
| A．you should open the tin and stand in hot water for 5 minutes |
| B．you should open the tin but not stand in hot water for 5 minutes |
| C．you should not open the tin but stand in hot water for 5 minutes |
| D．you should open the tin and let it stand in hot water for 5 minutes |
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