A green house is a building made of glass which is used for keeping warm when the outside temperature is low. In a similar way there are several gases in the atmosphere (mixture of gases that surround the earth) which trap the heat produced by the sun and prevent it from escaping. These gases are known as “greenhouse gases”. And the way in which they trap heat in the atmosphere is called the “greenhouse effect”. This is not simply air pollution. Most of the main greenhouse gases exist naturally in small amounts in our atmosphere, and without them the earth would be 30 degrees colder and human life would not exist. In other words, the greenhouse effect is a natural course which is to some degree helpful to us.
The problem is that in the last century and a half, we have been putting too many of these gases into the earth’s atmosphere by burning large quantities of coal and oil and by cutting down forest. The rapid increase in greenhouse gases is making the world warmer. The world’s temperature has already gone up by half a degree this century, and the sea level has risen by 10 centimetres. If the amount of carbon dioxide in the atmosphere doubles, there will probably be a rise in the earth’s temperature of between I and 4℃;. This may seem a small increase, but it would be enough to cause major changes in geography and agriculture. Large areas of the world would be flooded, and some areas would become dry and unable to produce crops. It is important, too, to consider that there may be a delay of about 30 years in the greenhouse effect. This means that we are probably experiencing only now the effect of the gases put into the atmosphere before the 1960s. Since then, our use of these gases has greatly increased. According to the passage, we can know “greenhouse effect” means_______.
| A．the way in which gases are used for keeping plants warm |
| B．a natural course that is to a certain degree useful to us |
| C．the way “greenhouse gases” trap heat on the earth |
| D．the whole course in which greenhouse gases prevent heat |
If there were no greenhouse effect,_______.
| A．all plants would not grow on our planet |
| B．soil would reduce the temperature by 30 degrees |
| C．man would breathe the cleaner air |
| D．people couldn’t live in the earth |
Which of the following is not true?
| A．Burning too much coal and oil produces lots of greenhouse gases. |
| B．It has become warm on the earth now than in the past. |
| C．Gases put into the atmosphere now will affect the earth years later. |
| D．The temperature in a greenhouse is as high as that in the atmosphere. |
Suppose the earth’s temperature rose by 3 degrees, _______.
| A．great harm will be done to mankind |
| B．the sea level would go up by 10 centimeters |
| C．all the land in the world would be flooded |
| D．crops would be unable to grow on the earth |
This passage mainly deals with ________.
| A．the concept (概念) and the harm of the greenhouse |
| B．the relation between greenhouse gases and man |
| C．the concept and change of greenhouse effect |
| D．the effect of the rise of the earth’s temperature |
Once an Englishman named Larry Belmont went to Russia for a holiday. After he got back some of his friends came. “I had a very dangerous trip while I was in Russia.” Larry said, “I went to see a friend in the country and when the sun went down, I was still traveling through a forest in a sleigh(雪橇). It was a long way from my friend’s house when about twenty wolves began to follow my sleigh.”
“It was very dark in the forest. There was thick snow on the ground. First I heard the wolves. The noise was terrible! Then I saw long, grey forms among the trees, and soon the wolves were near me. They were running very fast, and they didn’t seem to get tired like the horses.”
“What did you do?” one of Larry’s friends asked.
“When the wolves got very near,” Larry answered, “I put up my gun and shot the first wolf dead. Then all the other wolves stopped and ate it, so my sleigh got away from them for a few minutes. Then they finished their meal, and I heard them coming again. The moon 
was shining brightly on the snow now, and after a few minutes I saw them running among the trees once more. They came nearer again, and then I shot another one of them, and the others stopped once more to eat it. The same thing happened again, and my horses become more and more tired and ran slower and slower until, after two hours, only one wolf was still alive and following me.”
“Wasn’t it too fat to run?” one of Larry’s friends asked.The purpose of this passage is to ______.
| A．amuse readers | B．tell an exciting adventure |
| C．praise Larry Belmont’s bravery | D．show the danger of traveling through a forest |
According to what Larry said, the last wolf _______.
| A．was the strongest of all | B．had eaten up all the other wolves |
| C．ran much faster than the other wolves | D．was very fat and couldn’t run fast enough |
From what Larry’s friend asked at the end, we know that_______.
| A．Larry’s trip was really dangerous |
| B．the last wolf was too fat to run |
| C．all the wolves had been shot by Larry |
| D．the friend did not believe what Larry had said |
Alone in the darkness under layers of rubble (碎石) , Dan Woolley felt blood streaming from his head and leg.
Woolley, an aid worker, husband, and father of two boys, followed instructions on his cell phone to survive the January 12 earthquake in Haiti.
“I had an app that had pre-downloaded all this information about treating wounds. So I looked up excessive bleeding and I looked up compound fracture(断裂),” Woolley told CNN.
The application on his iPhone is filled with information about first aid and CPR from the American Heart Association. “So I knew I wasn’t making mistakes, ” Woolley said. “That gave me confidence to treat my wounds properly.”
Trapped in the ruins of the Hotel Montana in Port-au-Prince
, he used his shirt to bandage his leg, and tied his belt around the wound. To stop the bleeding on his head, he firmly pressed a sock to it. Concerned he might have been experiencing shock, Woolley used the app to look up what to do. It warned him not to sleep. So he set his phone alarm to go off every 20 minutes.
Once the battery got down to less than 20 percent of its power, Woolley turned it off. By then, he says, he had trained his body not to sleep for long periods, drifting off only to wake up within minutes.
With his injuries tended to, he wrote a note to his family in his journal: “I was in a big accident, an earthquake. Don’t be upset at God. He always provides for his children even in hard times. I’m still praying that God will get me out, but he may not. But even so he will always take care of you.”
After more than 60 hours, Woolley was pulled from the rubble.
“Those guys are rescue heroes,” he said to the crew that pulled him out. Which of the following best summarizes the passage?
A．How to deal with the wo und. |
| B．Try to get in touch with outside. |
| C．How to stay awake under the ground. |
| D．An unforgettable experience in the earthquake. |
Woolley set his phone alarm to go off every 20 minutes because_____.
| A．he tried his best to communicate with rescuers |
| B．he was forced to stay awake to check his wounds |
| C．he was afraid that sleep might do harm to him |
| D．he needed to use the app to look up what to do |
The underlined sentence suggests that_________.
| A．he turned off his iPhone to save power | B．the battery of his IPhone lasted long |
| C．he didn’t want his iPhone to disturb him | D．his iPhone went off because of lack of power |
What Woolley wrote his journal showed _______.
| A．he expected his family to lend a hand | B．he didn’t lose heart in hard times |
| C．he cared more for his family than his life | D．his children made him upset |
It is the season for long lines and frayed(紧张的) nerves. Here are some ways to survive a holiday flight.
Lighten up
Do yourself a favor and ship your presents. Nearly every US airline charges a fee to check a bag, so shipping gifts is now cheaper and more convenient than carrying them in your luggage.
Weigh your options
Not knowing what you’re going to pay for your luggage is annoying. So calcul
ate your overweight-luggage fees at home. You can find the fees out in advance by visiting new site Luggage Limits, which provides the latest information on more than 90 airlines.
Leave amateurs in the dust
Trust us and get to the airport an extra half-hour early. The check-in and security lines are filled with inexperienced files, and it’s a hard walking. Plus, if you decide to cut it close you may not get onto the flight at all. To reduce costs, airlines have reduced on flights and routes. The remaining flights are more likely to be oversold, especially on busy travel days. Fliers who check in early are the least likely to get bumped from oversold flights.
Take it public
The rates for renting a car at the airport have more than doubled over the past year because rental lot inventories have decreased dramatically(现住地). True, renting at the airport is convenient, but it’s just not worth it anymore. Unless you really need a car, take public transportation, hop a cab, or beg a friend to pick you up at the airport instead.
Say no to bumper cars
Tell the people picking you up to avoid parking their car. They can hang out in their car for free while waiting to get a call from you when you land. Many airports, including JFK and LAX now feature this sensible choice.How does the author think of shipping gifts?
| A．Unnecessary. | B．Expensive. | C．Inconvenient. | D．Wonderful. |
Airlines have reduced flights to _________.
| A．deal with crisis | B．reduce the time for leave |
| C．lower the cost | D．provide more job chances |
It can be learned from the passage that ______.
| A．renting a car at the airport is expensive | B．taxis stay at the airport free of charge |
| C．cars can park at the airport for free | D．JFK encourages people to take a taxi |
What’s the best title for the passage?
| A．Five ways to survive a holiday flight. | B．Good seasons for flight. |
| C．Cars at the airport. | D．How to board a flight |
My friend Dr. Dong had a wonderful chance to go to Seattle to present a paper at a professional meeting. When he got back to Beijing, he told me his experience.
Dr. Dong enjoyed his first days very much. At the medical conference, he felt quite confident in his area of research and was able to perform well in his presentation. But after a few days, he began to feel uncomfortable. His medical English was fine, but the social communication skills were different.
He got more and more worri
ed that he was misunderstanding simple English greetings and table talk conventions(习俗). When someone greeted him with, “Hi, how’s it going?” he thought they had asked him “Where are you going?” and answered with the name of the conference hall, only to get a surprised stare from them. At a western style dinner, a colleague asked, “So how’re you enjoyin’ the States?” he thought he heard, “how are you enjoying your steak?” and answered that he was eating chicken, not beef. That time, they smiled, and patiently repeated the question, then both laughed at the error.
By the end of the meetings, Dr. Dong felt a deep sense of “cultural stress” and was worn out from having to pay attention to so many new expressions and ways of dealing with things. He felt his handshake was not as firm as Americans’, found that people reacted unusually when he modestly insisted his English was not good after they complimented(称赞) him, didn’t know how to accept dinner invitations properly and therefore missed out on going to several lunches, and so on. Eventually, he was so confused that he felt the full impact of “culture shock”.Why did Dr. Dong travel to Seattle?
| A．To improve his spoken English. | B．To experience culture shock. |
C．To give lectures on his researc h. |
D．To attend a medical conference. |
Which of the following best describes Dr. Dong’s experience in Seattle?
| A．Comfortable—very uncomfortable—uncomfortable. |
| B．comfortable—very uncomfortable—comfortable. |
| C．Comfortable—uncomfortable – very uncomfortable. |
| D．Comfortable—uncomfortable – very comfortable. |
Dr. Dong felt a deep sense of “cultural stress” mainly because_______.
| A．he was too modest | B．he didn’t understand cultural differences |
| C．he lacked confidence | D．he was not good at English listening |
Sustainable development is applied to just about everything from energy to clean water and economic growth, and as a result it has become difficult to question either the basic assumptions behind it or the way the concept is put to use. This is especially true in agriculture, where sustainable development is often taken as the only measure of progress without a proper appreciation of historical and cultural perspectives.
To start with, it is important to remember that the nature of agriculture has changed markedly throughout history, and will continue to do so. Medieval agriculture in northern Europe fed, clothed and sheltered a popularly rural society with a much lower population density than it is today. It had smallest effect on biodiversity, and any pollution it caused was typically localized. In terms of energy use and the nutrients captured in the product it was relatively inefficient.
Contrast this with farming since the start of the industrial revolution. Competition from overseas led farmers to specialize and increase yields. Throughout this period food became cheaper, safer and m
ore reliable. However, these changes have also led to habitat loss and to decreasing biodiversity.
What’s more, demand for animal products in developing countries is growing so fast that meeting it will require an extra 300 million tons of grain a year by 2050.yet the growth of cities and industry is reducing the amount of water available for agriculture in many regions.
All this means that agriculture in the 21st century will have to be very different from how it was in the 20th. This will require complete thinking. For example, we need to move away from the idea that traditional practices are unavoidably more sustainable than new ones. We also need to abandon the idea that agriculture can be “zero impact”. The key will be to abandon the rather simple and unchangeable measures of sustainability, which centre on the need to maintain production without increasing damage.
Instead we need a more dynamic explanation, one that looks at the pros and cons of all the various way land is used. There are many different ways to measure agricultural performance besides food yield: energy use, environmental costs,
water purity, carbon footprint and biodiversity. It is clear, for example, that the carbon of transporting tomatoes from Spain to the UK is less than that of producing them in the UK with additional heating and lighting. But we do not know whether lower carbon footprints will always be better for biodiversity.
What is critical is recognizing that sustainable agriculture is not just about sustainable food production.How do people often measure progress in agriculture?
| A．By its productivity. |
| B．By its impact on the environment. |
| C．By its sustainability. |
| D．By its contribution to economic growth. |
What does the author think of traditional farming practices?
| A．They have remained the same over the centuries. |
| B．They have not kept pace with population growth. |
| C．They are not necessarily sustainable. |
| D．They are environmentally friendly. |
What will agriculture be like in the 21st century?
| A．It will go through thorough changes. |
| B．It will supply more animal products. |
| C．It will abandon traditional farming practices. |
| D．It will cause zero damage to the environment. |
What is the author’s purpose in writing this passage?
| A．To remind people of the need of sustainable development. |
| B．To suggest ways of ensuring sustainable food production. |
| C．To advance new criteria for measuring farming progress. |
| D．To urge people to rethink what sustainable agriculture is. |
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