阅读理解。根据短文内容,从选项中选出能填入空白处的最佳选项.选项中有两项为多余选项。 Recently some American scientists
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阅读理解。 根据短文内容,从选项中选出能填入空白处的最佳选项.选项中有两项为多余选项。 |
Recently some American scientists have given a useful piece of advice to people in industrialized nations. They say people should eat more of the same kind of food eaten by humans living more than 10,000 years ago. 1 The scientists say that the human life has changed greatly. Our bodies have not been able to deal with these changes in lifestyle and this had led to new kinds of sicknesses. 2 So they are called "diseases of civilization". Many cancers and diseases of the blood system are examples of such diseases. Scientists noted that people in both the Old Stone Age and the New Stone Age enjoyed very little alcohol or tobacco, probably none. 3 However, a change in food is one of the main differences between life in ancient times and that of today. Stone Age people hunted wild animals for their meat, which had much less fat than domestic ones. They ate a lot of fresh wild vegetables and fruits. They did not have milk or any other dairy products, and they made very little use of grains. 4 We eat six times more salt than our ancestors. We eat more sugar. We eat twice as much fat but only one third as much protein and much less vitamin C. 5 But scientists say that we would be much healthier if we eat much the same way the ancient people did, cutting the amount of fatty, salty and sweet food. A. Stone Age people lived a simple life. B. But today, we enjoy eating a lot of these. C. In that case, they would live much healthier. D. Ancient people also got lots of physical exercise. E. These new sicknesses were not known in ancient times. F. People today probably don"t want to live like our ancestors. G. Modern people used to suffer from "diseases of civilization". |
答案
1-5: CEDBF |
举一反三
阅读理解。 |
What is the relationship between violence and sports? Psychologists say that there are many reasons for violence at sports events.One is alcohol.Many fans drink a lot at games.When people drink, they are more likely to do abnormal things.Psychologist Dennis Brock says, "Quiet people become loud.Normally nonviolent people become destructive. " David Sampson, a sports sociologist, says, "These are often celebratory riots- a large number of very happy people mixed in with large amounts of alcohol.They don"t often seem dangerous in the beginning, but things get violent quickly. " Another reason for violence at sports events is the crowd.When individuals are in a large group of people, they can lose their sense of personal responsibility.Edward Hirt, a social Psychologist, says that research shows that people do things in crowds that they would never do alone.People in crowds feel anonymous - no one knows who they are.Crowds also make people feel powerful.They stop making personal decisions.They just follow the crowd. Social psychologists call this a "mob mentality". Dave Zarifis, head of public safety says, "Some people don"t even come to celebrate.They want to drink hard and make trouble.Someone does something stupid, and it grows from there.You get a mob mentality.People think it"s OK to do almost anything.They think, "There are so many of us and not enough of them. " Social psychologist Dr.Sharon Kennedy says that there are some things officials can do to prevent violence.Making sure that an area is not overcrowded is very important.Officials should also think of games as "big parties." Then they will prepare differently.Kennedy says that in Great Britain they are controlling the problem with cameras in all the stadiums."When you know someone is watching, you are much less likely to behave badly. " |
1. Which of the following best gives the main idea of the first two paragraphs? |
A. There"s a connection between violence and sports B. One cause of violence at sports events is alcohol. C. There are many reasons for violence at sports events. D. David Sampson and Dennis Brock have the same opinion. |
2. Which of the following does NOT belong to a "mob mentality"? |
A. "I must drink some alcohol to stop myself feeling shy. " B. " It"s safe to do what many people are doing. " C. "There are so many of us and not enough of them. " D. " No one knows I"m doing this. " |
3. The last paragraph is mainly about ______. |
A. how to turn games into big parties B. why to install cameras in stadiums C. how to prevent violence at sports events D. how to avoid oneself behaving badly |
4. What lesson can we learn from this passage? |
A. Never drink any alcohol no matter where you are. B. Whenever you are watching a game, you should keep quiet. C. Never follow blindly no matter how many people are doing something. D. Be careful when you are at a stadium because there are cameras there. |
阅读理解 |
By now, a rocket will have set off on its 35-million-mile trip to Mars and scientists must be waiting for the results. The rocket will be travelling for six months before it reaches the planet. It contains a number of scientific instruments, including a television camera. Any picture that is taken will have to travel for three minutes before they reach the earth. If the pictures are successful, they may solve a number of problems about Mars and provide information about the markings on its surface which, nearly 100 years ago, the astronomer (天文学家), Schiaparelli, thought to be canals. It will be a long time before any landing on Mars can be tried. This will only be possible when scientists have learned a lot more about the atmosphere that surrounds the planet. If a satellite can one day be put into orbit round Mars, scientists will be able to find out a great deal. An interesting suggestion for measuring the atmosphere around Mars has been made. A rubber ball having a radio transmitter(无线电发报机) could be dropped from a satellite so that it would fall towards the surface of the planet. The radio would tell the rate(速度) at which the ball was slowed down and scientists would be able to calculate how dense the atmosphere is. It may even be possible to drop scientific instruments on to the planet"s surface. Only when a great deal more information has been got, will it be possible to plan a manned (载人的) trip to Mars. |
1. The first paragraph tells us _______ . |
A. Mars is too far away for people to land on B. it will take the rocket half a year to reach Mars C. Mars is 53 million miles away from the earth D. scientists have well known about the surface of Mars |
2. The pictures taken by a television camera _______ . |
A. will have to be put into the scientific instruments B. will prove what Schiaparelli thought about is false C. will be received by the earth in three minutes" time D. can help people do much less research work |
3. It seems that _______ might prevent scientists from landing on Mars. |
A. the atmosphere round the planet B. the orbit round the planet C. having little information D. the markings on the planet"s surface |
4. Having successfully dropped the rubber ball, scientists would be able to calculate how dense the atmosphere is by _______. |
A. slowing the ball down at a speed which could be measured B. dropping another ball with scientific instruments on to the surface C. putting down the ball towards the planet"s surface D. measuring the speed at which the ball was falling |
5. It is not until _______ that people can think of a plan to make a trip to Mars. |
A. they have got enough scientific instruments B. they have a lot more information C. dense enough atmosphere is found around the planet D. a reasonable suggestion has been made |
阅读理解。 |
Many people watched the lift-off of the space shuttle Columbia on March 21, 1982. But none watched more closely than eighteen-year-old Ted, as Ted"s insects were on board the shuttle. The Shuttle Student Involvement Program invited students to make a science experiment. The experiment would be done by astronauts on the space shuttle. Ted had always been interested in space and flight. Insect flight especially interested him. Ted noticed that insects need gravity to take off and land. They need gravity to fly in a straight line. But in space, there is no gravity. Could insects fly in zero gravity? That is what Ted wanted to find out. Ted made an experiment called "Insect in Flight Motion Study". He entered his experiment and soon news came that it was a winner. A large team of scientists and engineers helped Ted get his experiment ready to fly. There were many questions to be answered first. What kind of insects would Ted use in his experiment? The insects would have to be strong enough to live on the shuttle for nine days without much food. What kind of container would hold the insects? Would the insects die during the shuttle flight? After months of hard work, the "insectronauts" were chosen. A group of moths, flies, and honeybees were put into a special box and put onto the space shuttle. When Columbia flew into space, it was carrying insect passengers. On March 24, astronauts Gordon Fullerton and Jack Lousma took out the box that held the insects. They began filming the insects with a special video camera. When the space shuttle landed Ted was able to watch the video film of insects. Just as he thought, most of the insects did have trouble flying in zero gravity. The flies did well. But the moths" flight seemed "uncontrolled". They would often just hang in the air. The bees had the most trouble. They couldn"t fly at all! The film showed bees spinning around in all directions. Others were just floating about in the box. Ted learned the answer to his question about insects" flight in zero gravity. But he also learned a lot more. He learned about the hard work needed in making a successful experiment. |
1.What does the underlined sentence "it was a winner" mean? |
A. Ted could fly in space. B. Ted won a prize. C. Ted"s experiment was accepted. D. Ted won in a race. |
2. What did Ted want to find out? |
A. Whether the insects could fly in space. B. Whether the insects could fly in a straight line. C. Whether the insects could land after flying for a while. D. Whether the insects could take off after resting for a while. |
3. Of the three kinds of insects sent into space, which one flew worst in zero gravity? |
A. The flies. B. The honeybees. C. The insects. D. The moths. |
4. Who did the experiment? |
A. Ted himself. B. Ted"s friend. C. A large team of scientists and engineers. D. Two astronauts on the space shuttle. |
5. How did Ted learn the answer to his question about insects" flight in zero gravity? |
A. By asking the scientists and engineers. B. By studying a book written by the astronauts. C. By going into space and watching the insects" flight himself. D. By watching the video film made by the astronauts. |
阅读理解。 |
Thirteen vehicles(车辆)lined up last March to race across the Mojave Desert, seeking a million in prize money. To win, they had to finish the 142-mile race in less than 10 hours. Teams and watchers knew there might be no winner at all, because these vehicles were missing a key part-drivers. DARPA, the Defense Advanced Research Projects Agency, organized the race as part of a push to develop robotic vehicles for future battlefields. But the Grand Challenge, as it was called, just proved how difficult it is to get a car to speed across an unfamiliar desert without human guidance. One had its brake locked up in the starting area. Another began by throwing itself onto a wall. Another got tied up by bushes near the road after 1.9 miles. One turned upside down. One took off in entirely the wrong direction and had to be disabled by remote (远距离的) control. One went a little more than a mile and rushed into a fence; another managed to go for six miles but stuck on a rock. The "winner," if there was any, reached 7.8 miles before it ran into a long , narrow hole , and the front wheels caught fire. "You get a lot of respect for natural abilities of the living things," says Reinhold Behringer, who helped design two of the car-size vehicles for a company called Sci-Autonics. "Even ants can do all these tasks effortlessly. It"s very hard for us to put these abilities into our machines." The robotic vehicles, though with necessary modern equipment such as advanced computers and GPS guidance, had trouble figuring out fast enough the blocks ahead that a two-year-old human recognizes immediately, Sure, that very young child, who has just only learned to walk, may not think to wipe apple juice off her face, but she already knows that when there"s a cookie in the kitchen she has to climb up the table, and that when she gets to the cookie it will taste good. She is more advanced, even months old, than any machine humans have designed. |
1. Watchers doubted if any of the vehicles could finish the race because __. |
A. they did not have any human guidance B. the road was not familiar to the drivers C. the distance was too long for the vehicles D. the prize money was unattractive to the drivers |
2. DARPA organized the race in order to . |
A. raise money for producing more robotic vehicles B. push the development of vehicle industry C. train more people to drive in the desert D. improve the vehicles for future wars |
3. From the passage we know "robotic vehicles" are a kind of machines that _. |
A. can do effortlessly whatever tasks living things can B. can take part in a race across 142 miles with a time limit C. can show off their ability to turn themselves upside down D. can move from place to place without being driven by human beings |
4. In the race , the greatest distance one robotic vehicle covered was . |
A. about eight miles B. six miles C. almost two miles D. about one mile |
5. In the last paragraph , the writer implies that there is a long way to go . |
A. for a robotic vehicle to finish a 142-mile race without any difficulties B. for a little child who has just learned to walk to reach the cookie on the table C. for a robotic vehicle to deal with a simple problem that a little child can solve D. for a little child to understand the importance of wiping apple juice off its face |
"Sesame Street" has been called "the longest street in the world." That is because the television program can be seen in so many parts of the world. That program became one of America"s exports soon after it was shown in New York in 1969. In the United States more than six million children watch the program regularly. Although some people do not agree to some parts of the program, parents praise it highly. Tests have shown that children have learned much from watching "Sesame Street". The children who watch it five times a week learn more than those who watch it less. In the United States the program is shown at different hours during the week in order to increase the number of children who can watch it regularly. The programs use songs, stories, jokes and pictures to give children a basic understanding of numbers, letters and human relationships. Why has "Sesame Street" been so much more successful than other children"s shows? Many reasons have been suggested, such as the educational theories of its producers, the support from both the government and businessmen, and the full use of various kinds of television skills. Perhaps another important reason is that mothers watch "Sesame Street" together with their children. This is partly because famous film stars often appear on "Sesame Street". But the best reason for the success of the program may be that it makes every child watching it feel able to learn. The child finds himself learning, and he wants to learn more. |
1. The "Sesame Street" has been called "the longest street in the world" because it is ______. |
A. the longest street in the United States B. shown in many countries C. the longest television program in the world D. watched regularly by six million children |
2. In the United States many children can watch the program regularly because ______. |
A. they needn"t go to school B. it is shown many hours a day C. it is shown in the evening D. it is shown many times during the week |
3. One of the important reasons for the success of the program is that ______. |
A. not only children but also their mothers like to watch it B. many famous film stars enjoy watching it C. it teaches educational theories D. it is produced by the government |
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