Before a new type of airplane goes into service, every part of it is tested again and again. But there are two tests that are more important than all the others.
The first is called the "tank test". A modem airplane must fly very high in the sky. Air must be pumped into the plane so that the passengers can breathe. The metal structure （结构）of the plane has to be very strong for this reason. When the plane is filled with air, the air presses against the skin of the plane inside. The pressure （压力） on a small window is like a huge foot that is trying to get out. If a small part of the plane were to fail, the plane would explode in the sky. To test the structure of the plane, the plane is lowered into a huge tank or container of water. Then it is filled with air. The pressure inside the plane is greater than it ever will be when it is high up in the air. Finally, there is an explosion. This does not cause so much damage inside the water tank as it would anywhere else. Engineers can discover which part of the plane has broken. Then that part is made stronger.
The most dangerous test happens when the new plane is going through test flights in the air. The test pilot must find out exactly what happens when the engines （发动机） are all shut off at once. The plane begins to fall like a stone. It is the pilot’s job to find out how he can get control of the plane again. These two tests are examples of how planes are made safe before they ever carry passengers.
68. By doing the "tank test", the engineers can find out _______.
A. the amount of air in the plane
B. the strength of the plane structure
C. the pressure inside and outside the plane
D. the power of the airplane engines
69. What will happen to the plane under the "tank test"?
A. It will be broken. B. It will be made stronger.
C. It will be filled with water. D. It will be tested by pilots,
70. According to the text, why are test flights most dangerous?
A. The plane may explode in the air.
B. The pilot may lose control of the plane.
C. The engines may be damaged.
D. Too much air may get into the plane.
71. What might be the most suitable title for the text?
A. Two Important Tests on Airplanes
B. The Importance of Flying Safely
C. The Danger of Testing Airplanes
D. How Airplanes Are Made and Tested
Ask someone what they have done to help the environment recently and they will almost certainly mention recycling. Recycling in the home is very important of course. However, being forced to recycle often means we already have more material than we need. We are dealing with the results of that over-consumption in the greenest way possible, but it would be far better if we did not need to bring so much material home in the first place.
The total amount of packaging increased by 12% between 1999 and 2005. It now makes up a third of a typical household’s waste in the UK. In many supermarkets nowadays food items are packaged twice with plastic and cardboard.
Too much packaging is doing serious damage to the environment. The UK, for example, is running out of it for carrying this unnecessary waste. If such packaging is burnt, it gives off greenhouse gases which go on to cause the greenhouse effect. Recycling helps, but the process itself uses energy. The solution is not to produce such items in the first place. Food waste is a serious problem, too. Too many supermarkets encourage customers to buy more than they need. However, a few of them are coming round to the idea that this cannot continue, encouraging customers to reuse their plastic bags, for example.
But this is not just about supermarkets. It is about all of us. We have learned to associate packaging with quality. We have learned to think that something unpackaged is of poor quality. This is especially true of food. But it also applies to a wide range of consumer products, which often have far more packaging than necessary.
There are signs of hope. As more of us recycle, we are beginning to realise just how much unnecessary material are collecting. We need to face the wastefulness of our consumer culture, but we have a mountain to climb.What does the underlined phrase “over-consumption” refer to?
| A．Using too much packaging. |
| B．Recycling too many wastes. |
| C．Making more products than necessary. |
| D．Having more material than is needed. |
The author uses figures in Paragraph 2 to show _______.
| A．the tendency of cutting household waste |
| B．the increase of packaging recycling |
| C．the rapid growth of super markets |
| D．the fact of packaging overuse |
According to the text, recycling ______.
| A．helps control the greenhouse effect |
| B．means burning packaging for energy |
| C．is the solution to gas shortage |
| D．leads to a waste of land |
What can be inferred from Paragraph 4?
| A．Unpackaged products are of bad quality. |
| B．Supermarkets care more about packaging. |
| C．It is improper to judge quality by packaging. |
| D．Other products are better packaged than food. |
What can we learn from the last paragraph?
| A．Fighting wastefulness is difficult. |
| B．Needless material is mostly recycled. |
| C．People like collecting recyclable waste. |
| D．The author is proud of their consumer culture. |
Every morning my father buys a newspaper on his way to work. Every evening my mother looks through magazines at home. And every night, I look at the posters with photos of David Beckham and Yao Ming on my bedroom wall before I go to sleep. Can we imagine life without paper or print?
Paper was first created about 2,000 years ago, and has been made from silk, cotton, bamboo, and, since the 19th century, from wood. People learned to write words on paper to make a book. But in those days, books could only be produced one at a time by hand. As a result, they were expensive and rare. And because there weren’t many books, few people learned to read.
Then printing was invented in China. When printing was developed greatly at the beginning of the 11th century, books could be produced more quickly and cheaply. As a result, more people learned to read. After that, knowledge and ideas spread quickly.
Today information can be received online, downloaded from the Internet rather than found in books, and information can be kept on CD-ROMs or machines such as MP3 players.
Computers are already used in classrooms, and newspapers and magazines can already be read online. So will books be replaced by computers one day? No, I don’t think the Yao Ming poster on my bedroom wall will ever be replaced by a computer two metres high!What does the writer do before he goes to sleep’?
| A．He reads books. | B．He reads newspapers |
| C．He looks through magazines | D．He looks at the posters on the wall. |
When was paper first created?
| A．About 2.000 years ago. | B．In the 19th century. |
| C．About 1.000 years ago. | D．In the 11th century. |
Why were books expensive and rare before the invention of printing?
A. People could not read.
B. People could not write words on paper.
C. People could not find silk, cotton or bamboo.
D People could only produce books one at a time by handWhat happened after books became cheaper?
| A．People didn’t want to buy books. |
| B．Printing was invented in China. |
| C．Knowledge and ideas spread quickly. |
| D．The Internet was introduced to people soon |
What is the writer’s opinion about books and computers’?
| A．People won’t need books any more |
| B．Books won’t be replaced by computers. |
| C．People prefer to find information in books. |
| D．Computers have already replaced books. |
When two Bangs meet
Sheldon Cooper is a scientific genius on the popular American TV show, The Big Bang Theory (《生活大爆炸》). He finally met his match last year: Stephen Hawking.
This is not the first time that the scientist has appeared on TV. He has also been on Star Trek (in 1987) and The Simpsons (in 1989). Each time, he played himself.
Hawking, 71, is perhaps the world’s most famous scientist after Albert Einstein. He has spent his whole life studying the beginning and the end of the universe, including the Big Bang (宇宙大爆炸) theory.
The Big Bang theory explains the early development of the universe. According to the theory, about 13.7 billion years ago everything was all squeezed （挤压）together in a tiny, tight little ball, and then the ball exploded. The results of that explosion are what we call the universe.
Hawking has always tried to make science more popular with people. His book: A Brief History of Time was published in 1988. In the book he shares his understanding of the universe in simple language. The book tries to explain many subjects about the universe to common readers, including the Big Bang, black holes and light cones (光锥).
Hawking’s achievements are even greater if you think about his disability. When he was 21, Hawking caught a bad illness that slowly stopped him from moving or talking. Now he sits on a wheelchair with a computer by his side. To communicate, he moves two fingers to control the computer’s mouse. He chooses his words from the screen, which are then spoken by a voice synthesizer (合成器).
Hawking also believes that there might be aliens in space. However, he believes they are probably very dangerous, so we should not look for them. “I imagine they might exist in very big ships ... having used up all the resources from their home planet,” Hawking said in a British documentary（纪录片） named Into the Universe with Stephen Hawking. What does the “two Bangs” in the title refer to?
| A．The director of “The Big Bang Theory” and the founder of it. |
| B．The director and the actor of “The Big Bang Theory”. |
| C．The founder of the “Big Bang” theory and its spreader. |
| D．The scientific genius on TV show and the one alive in real life. |
Acting in The Big Bang Theory is Hawking’s _____ time on TV.
| A．first | B．second | C．third | D．fourth |
According to Paragraph 5, Hawking wrote the book A Brief History of Time especially for _____.
| A．scientists who study the universe |
| B．people who know a lot about the universe |
| C．people who know little about the universe |
| D．people who only know simple language |
The Big Bang theory mainly explains _____.
| A．how the universe started | B．what the universe is like |
| C．how old the universe is | D．how the universe exploded |
According to the passage, which of the following about Hawking is TRUE?
| A．He was born with a disability. |
| B．He uses a computer to communicate. |
| C．He believes aliens are our friends. |
| D．He encourages people to look for aliens. |
From the beginning of human history, wild animals provided food, clothing and sometimes medicine for man. We may not depend as much on wild animals now. But we hear about them every day. Americans use the names of animals in many ways. Automobile manufacturers and gasoline companies especially like to use big cats to sell their products. They like lions, tigers and wildcats. When Americans say wildcat, they usually mean a lynx, an ocelot or a bobcat. All these cats attack quickly and fiercely. So wildcats represent something fast and fierce.
An early American use of the word wildcat was quite different. It was used to describe members of Congress who declared war on Britain in 1812. A magazine of that year said the wildcat congressmen went home. It said they were unable to face the responsibility of having involved their country in an unnecessary war.
Wildcat also has been used as a name for money in the 1800s. At that time, some states permitted banks to make their own money. One bank in the state of Michigan offered paper money with a picture of a wildcat on it. Some banks, however, did not have enough gold to support all the paper money they offered. So the money had little or no value. It was called a wildcat bill or a wildcat banknote. The banks who offered this money were called wildcat banks. A newspaper of the time said those were the days of wildcat money. It said a man might be rich in the morning and poor by night.
Wildcat then was also used for an oil well or gold mine that had almost no oil or gold in it. Dishonest developers would buy such property. Then they would sell it and leave town with the money. The buyers were left with worthless holes in the ground. Today, wildcat oil wells are in areas that are not known to have oil.What is the main idea of the passage?
| A．Wildcats and their stories. |
| B．Wildcats and their characters. |
| C．Varieties of animal species. |
| D．Relationship between animals and humans. |
The underlined words "a lynx, an ocelot or a bobcat" in Paragraph 1 may refer to "__________".
| A．gasoline companies | B．automobile manufacturers |
| C．brands of automobile | D．names of wildcats |
Which of the following would people like to have or trust according to the passage?
| A．Wildcat congressmen. | B．Wildcat oil wells. |
| C．Wildcat banks. | D．Wildcat cars. |
It can be inferred that during the days of wildcat money__________.
| A．people couldn't buy anything with the money |
| B．people complained and suffered a lot |
| C．the rich invested too much on oil wells |
| D．people didn't know how to save money |
Some people believe that international sport creates goodwill between the nations and that if countries play games together they will learn to live together. Others say that the opposite is true: international contests encourage false national pride and lead to misunderstanding and hatred. There is probably some truth in both arguments, but in recent years the Olympic Games have done little to support the view that sports encourage international brotherhood. Not only was there the incident of tragedy involving murders of athletes, but the Games were also ruined by lesser incidents caused principally by minor national contests.
One country received its second-place medals with visible anger after the hockey final. There had been noisy scenes at the end of the hockey match, as the losers disagreed with the final decisions. They believed that one of their goals should have been allowed and that their opponents’ victory was unfair. Their manager was in great anger when he said: “This isn’t hockey. Hockey and the International Hockey Federation are finished.” The president of the Federation said later that such behavior could result in the suspension(停赛) of the team for at least three years.
The American basketball team announced that they would not yield first place to Russia, after a disputable(有争议的) end to their contest. The game had ended in disorder. It was thought at first that the United States had won by a single point, but it was announced that there were three seconds still to play. A Russian player then threw the ball from one end of the court to the other, and another player popped it into the basket. It was the first time the US had ever lost an Olympic basketball match. An appeal jury (评审委员会) debated the matter for four and a half hours before announcing that the result would stand. The American players then voted not to receive the silver medals.
Incidents of this kind will continue as long as sport is played competitively rather than for the love of the game. The suggestion that athletes should compete as individuals or in non-national teams, might be too much to hope for. But in the present organization of the Olympics there is far too much that encourages aggressive patriotism (爱国主义).According to the author, recent Olympic Games have ____.
| A．created goodwill between the nations |
| B．hardly showed any international friendship |
| C．caused only false national pride |
| D．led to more and more misunderstanding and hatred |
What did the manager mean by saying, “...Hockey and the International Hockey Federation are finished”?
| A．There should be no more hockey matches organized by the Federation. |
| B．His team would no longer take part in international games. |
| C．Hockey and the Federation are ruined by the unfair decisions. |
| D．The Federation should be ended. |
The basketball example implied that .
| A．too much patriotism was displayed in the incident |
| B．the announcement to make the match last longer was wrong |
| C．the appeal jury was too hesitant in making the decision |
| D．The American team was right in receiving the silver medals |
Which statement best summarizes this passage?
| A．The organization of the Olympic Games must be improved. |
| B．Different teams often have disputes when fighting for the first place. |
| C．Any team that has disrespectful behavior should be suspended. |
| D．Athletes should compete as individuals. |
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