Just as the world’s most respected scientific bodies have confirmed that the world is getting hotter, they have also stated that there is strong evidence that humans are driving the warming． Countless recent reports from the world’s leading scientific bodies have said the same thing． For example, a 2010 summary of climate science by the Royal Society stated that: “There is strong evidence that the warming of the Earth over the last half-century has been caused largely by human activity．”
The idea that humans could change the planet’s climate may be counter-intuitive（与直觉不符的）, but the basic science is well understood． Each year, human activity causes billions of tons of greenhouse gases to be released（释放）into the atmosphere． As scientists have known for years, these gases hold heat that would otherwise escape to space, wrapping the planet in an invisible blanke
t．
Of course, the planet’s climate has always been changing thanks to “natural” factors（因素） such as changes in solar or volcanic（火山的）activity, or cycles relating the Earth’s going around the sun． According to the scientific literature, however, the warming recorded to date matches the pattern of warming we would expect from a build-up of greenhouse gas in the atmosphere – not the warming we would expect from other possible causes．
Even if scientists did discover another reasonable explanation for the warming observed so far, that would beg a difficult question． As Robert Henson puts it in The Rough Guide to Climate Change: “If some newly discovered factor can account for the climate change, then why aren’t carbon dioxide（二氧化碳）and the other greenhouse gases producing the warming that basic physics tells us they should be?”
The only way to prove with 100% certainty that humans are responsible for global warming would be to run an experiment with two identical Earths – one with human influence and one without． That obviously isn’t possible, and so most scientists are careful not to state human influence as an absolute certainty． In most scientists’ opinion, the global warming is mainly caused by ．
| A．solar activity | B．volcanic activity |
| C．the Earth’s going around the sun | D．human activity |
The text is developed by ．
| A．giving typical examples | B．foll owing the order of space |
| C．analysing a theory and arguing it | D．comparing and finding differences |
The underline word “identical” means ．
| A．totally different | B．exactly the same |
| C．extremely important | D．relatively independent |
One afternoon last week, I saw three tearful children from my son's school being comforted by teachers. That morning, my 11-year-old had stomach pains, retching（干呕）into a bowl. Talking to other mothers later, I heard about other children with stomachache or difficult sleeping the night before.
What caused so much pain? Sports day. Sports day might be necessary at a highly-competitive independent school, but not at a village primary school. For the children who can fly like the wind, sports day cause no problem. For those who are overweight or just not good at sport, it is nightmare（噩梦）. Even for those who enjoy running but fall halfway down the track in front of the entire school and their parents, it can prove a disease.
Why do we put our children through this annual suffering? Some may say competition is character building; or it's taking part, not winning, that's important; or that's a tradition of school life. I just felt great pity for those children in tears or in pain.
Team games at the end of sports day produced some close races, wild enthusiasm, lots of shouting - and were fun to watch. More importantly, the children who were not so fast or quick at passing the ball were hidden a little from everyone's eyes. Some of them also had the thrill of being on the winning side.
I wish that sports day could be abandoned and replaced with some other less competitive event. Perhaps an afternoon of team games, with a few races for those who want them, would be less stressful for the children and a lot more fun to watch.
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What can we learn about the author's son from Paragraph 1?
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| 2． |
Sports day is still an annul event in this school probably because
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| 3． |
What does the author think about team games?
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| 4． |
What is the author's attitude towards sports day?
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Why do Americans struggle with watching their weight, while the French, who consume rich food, continue to stay thin? Now a research by Cornell University suggests how life style and decisions about eating may affect weight. Researchers concluded that the French tend to stop eating when they feel full. However, Americans tend to stop when their plate is empty or their favorite TV show is over.
According to Dr. Joseph Mercola, a health expert, the French see eating as an important part of their life style. They enjoy food and therefore spend a fairly long time at the table, while Americans see eating as something to be squeezed between the other daily activities. Mercola believes Americans lose the ability to sense when they are actually full. So they keep eating long after the French would have stopped. In addition, he points out that Americans drive to huge supermarkets to buy canned and frozen foods for the week. The French, instead, tend to shop daily, walking to small shops and farmers’ markets where they have a choice of fresh fruits, vegetables, and eggs as well as high-quality meats for each meal.
After a visit to the United States, Mireille Guiliano, author of French Women Don’t Get Fat, decided to write about the importance of knowing when to stop rather than suggesting how to avoid food. Today she continues to stay slim and rarely goes to the gym.
In spite of all these differences, evidence shows that recent life style changes may be affecting French eating habits. Today the rate of obesity — or extreme overweight — among adults is only 6%. However, as American fast food gains acceptance and the young reject older traditions, the obesity rate among French children has reached 17% — and is growing.In what way are the French different from Americans according to Dr. Joseph Mercola?
| A．They go shopping at supermarkets more frequently. |
| B．They squeeze eating between the other daily activities. |
| C．They regard eating as a key part of their lifestyles. |
| D．They usually eat too much canned and frozen food. |
This text is mainly the relationship between _________.
| A．Americans and the French |
| B．life style and obesity |
| C．children and adults |
| D．fast food and overweight |
The text is mainly developed __________.
| A．by contrast | B．by space | C．by process | D．by classification |
Where does this text probably come from?
| A．A TV interview | B．A food advertisement |
| C．A health report | D．A book review |
When I told my father that I was moving to Des Moines, Iowa, he told me about the only time he had been there. It was in the 1930s, when he was an editor if the literary magazine of Southern Methodist University（SMU）in Dallas, Texas. He also worked as a professor at SMU, and there was a girl student in his class who suffered from a serious back disease. She couldn;t afford the operation because her family was poor.
Her mother ran a boardinghouse in Galveston, a seaside town near Houston, Texas. She was cleaning out the attic（阁楼）one day when she came across an old dusty manuscript（手稿）. On its top page were the words, “By O. Henry”. It was a nice story, and she sent it to her daughter at SMU, who showed it to my father. My father had never read the story before, but it sounded like O. Henry, and he knew that O. Henry had once lived in Houston. So it was possible that the famous author had gone to the beach and stayed in the Gainestown boardinghouse, and had written the story there and left the manuscript behind by accident. My father visited an O. Henry expert at Columbia University in New York, who authenticated the story as O. Henry’s.
My father then set out to sell it. Eventfully, he foud himself in Des Moines, meeting with Gardner Cowles, a top editor at the Des Moines Register. Cowles loves the story and bought it on the spot. My father took the money to the girl. It was just enough for her to have the operation she so desperately needed.
My father never told me what the O. Henry story was about. But i doubt that it could have been better than his own story.Who found the O. Henry’s manuscript?
| A．The girl’s mother. | B．The author’s father. |
| C．The girl. | D．The author. |
Which of the following might explain the fact that the manuscript was found in the attic?
| A．O. Henry once worked in Houston. |
| B．O. Henry once stayed in Galveston. |
| C．O. Henry once moved to Des Moines. |
| D．O. Henry once taught at SMU. |
The underlined word “authenticated” in Paragraph 2 probably means __________.
| A．named | B．treated | C．proved | D．described |
According to the text, why did the author’s father go to Des Moines?
| A．To sell the O. Henry story. | B．To meet the author himself. |
| C．To talk with the O. Henry expert. | D．To give money to the girl. |
Our warming planet is expected to face serious water crisis（危机）in the coming decades — which means each nation’s natural resource will be more important than ever.  |
According to the statistics, what is the world average of freshwater resource per person?
| A．244,973 cubic kilometers |
| B．241 cubic kilometers |
| C．3,642 cubic kilometers |
| D．6,122 cubic kilometers |
Which country or region has the most freshwater resource per year?
| A．Guyana | B．Brazil | C．Iceland | D．China |
Which country or region appears twice on the top 5 lists?
| A．Bhutan | B．Seychelles | C．Canada | D．Suriname |
It's generally believed that people act the way they do because of their personalities and attitudes. They recycle their garbage because they care about the environment. They pay $5 for a caramel brulee latte because they like expensive coffee drinks.
It's undeniable that behavior comes from our inner dispositions（性情）, but in many instances we also draw inferences about who we are, as suggested by the social psychologist Daryl Bern, by observing our own behavior. We can be strangers to ourselves. If we knew our own minds, why should we need to guess what our preferences are from our behavior? If our minds were an open book, we would know exactly how much we care about the environment or like lattes. Actually, we often need to look to our behavior to figure out who we are.
Moreover, we don't just use our behavior to learn about our particular types of character --- we infer characters that weren't there before. Our behavior is often shaped by little pressures around us, which we fail to recognize. Maybe we recycle because our wives and neighbors would disapprove if we didn't. Maybe we buy lattes in order to impress the people around us. We should not mistakenly believe that we always behave as a result of some inner disposition.
Whatever pressures there can be or inferences one can make, people become what they do, though it may not be in compliance（符合）with their true desires. Therefore, we should all bear in mind Kurt Vonnegut's advice: "We are what we pretend to be, so we must be careful about what we pretend to be."
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According to the passage, personalities and attitudes are commonly believed to.
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Which of the following would Daryl Bern most probably agree with?
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| 3． |
What can be inferred from the underlined sentence in the passage?
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| 4． |
What does the author mainly discusses in the passage?
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