Based on a telephone survey of about 72.000 people in 2005.only about l in 4 Americans knows the warning signs of a heart attack and what to do first.according to a new government report．That’s a de 题目和参考答案——青夏教育精英家教网—

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Based on a telephone survey of about 72，000 people in 2005，only about l in 4 Americans knows the warning signs of a heart attack and what to do first，according to a new government report．That’s a decline from the last survey in 2001，which showed that nearly 1 in 3 were well informed．

The study’s lead author，Dr．Jing Fang，called public awareness in the new survey“alarmingly low”．Fang is with the Center for Disease Control and Prevention，which surveyed residents of 13 states and District of Columbia．

Heart attack warning signs can include one or more of the following：shortness of breath，pain or discomfort in the chest，discomfort in the arms or shoulders，a feeling of weakness or light headedness，and discomfort in the jaw，neck or back．Chest pain is the most common symptom．Women are more likely than men to experience some of the other symptoms，Particularly shortness of breath and back or jaw pain，according to the American Heart Association．Anyone experiencing these symptoms should call 911，the heart association advises．In America，the groups best informed of heart attack warning signs，and what to do，tended to be white，highly educated and women．Also scoring well were residents of West Virginia，which has Some of the nation’s highest heart attack death rates．

Each year more than 900，000 Americans suffer heart attacks，about 157，000 of them fatal（致命的）．About half the deaths occur within an hour of the symptoms appearing，experts say．Because different people experience different symptoms，it’s important to be aware of all of them，doctors say．

Of course，knowing is not the same as doing, Although most of those who got the heart attack symptoms right said they would call 911,other studies show that only about half of heart attack victims go to a hospital by ambulance, Rosamond noted．

Patients’ concerns about lack of health insurance or other matters may explain why so few went to a hospital，said Rosamond，who was not involved in the new study．

61．What’s the main topic of the passage?

A．People’s declining knowledge of heart attack symptoms．

B．The importance of knowing the heart attack warning signs．

C．The seriousness of heart attacks．

D．Some of the symptoms of heart attacks．

62．We learn from the passage that American women

A．suffer more chest pain from heart attacks

B．have a greater possibility to experience shortness of breath in heart attacks

C．have heart attacks more often than men

D．having heart attacks all experience rather similar symptoms

63．Who is most likely to know the most about heart attack warning signs?

A．A white，poorly educated man B．A white．highly educated woman．

C．A black．highly educated woman． D．A black high school boy．

64．Why don’t Some people who get heart attacks call 91 l?

A．Because they don’t trust doctors in the hospital．

B．Just because they are suffering too much to move．

C．Partly because ambulances are not available to them．

D．Partly because they don’t have health insurance

65．What do we learn from the passage?

A．Patients with heart disease rarely suffer chest pain．

B．Dr．Jing Fang did the survey by himself．

C．West Virginia has the lowest heart attack death rate．

D．A person having a heart attack may have one or more symptoms．

61―65：A B B D D

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【小题1】According to News 1 we know that the life extension drugs ____.

A．were first sold in the year 2025.

B．are made to make people live forever.

C．should be taken when people are young.

D．have greatly increased the life expectancy rate at birth.

【小题2】The sales of the life extension drugs so far clearly show that_____.

A．people have no faith in them

B．people want to give them a try

C．they work very well for seniors

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【小题3】What can we learn from News 2?

A．Many Americans will find it hard to find a job.

B．It’s very hard for seniors to pass the age of 80.

C．The US population has been increasing rapidly since 2005.

D．The US population has been aging rapidly since 2005.

【小题4】We can know from the passage that the fuel of the Re-Hydro label is ______.

【小题5】What can we infer from News 3?

A．Re-Hydro will be widely used in the future.

B．The government discourages the production of Re-Hydro.

C．Producers are not interested in producing Re-Hydro.

D．Re-Hydro is more expensive than regular hydrogen.

Recently, a survey was done among 288,000 students, which shows that today’s traditional-age college freshmen are “more materialistic and less altruistic (利他主义的)” than at any time in the 19 years of the poll (民意调查).
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Interest in teaching, social service and the “altruistic” fields is at a low. On the other hand, enrollment in business programs, engineering and computer science is way up.
That’s no surprise either. A friend of mine (a sales representative for a chemical company) was making twice the salary of her college instructors in her first year on the job---even before she completed her two-year associate degree.
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Weekly we read of unions who went on strike for higher wages, only to drive their employer out of business. No company; No job. How shortsighted in the long run!
But the most important argument for a broad education is that in studying the accumulated wisdom of the ages, we improve our moral sense. I saw a cartoon recently which shows a group of businessmen looking puzzled as they sit around a conference table; one of them is talking on the intercom (对讲机) : “Miss Baxter,” he says, “could you please send in someone who can distinguish right from wrong?”
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B．the Americans copied Thanksgiving from Hindus

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B．in India Thursday is a religious day

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Decision-making under Stress

　　A new review based on a research shows that acute stress affects the way the brain considers the advantages and disadvantages, causing it to focus on pleasure and ignore the possible negative (负面的) consequences of a decision.

　　The research suggests that stress may change the way people make choices in predictable ways.

　　“Stress affects how people learn,” says Professor Mara Mather. “People learn better about positive than negative outcomes under stress.”

　　For example, two recent studies looked at how people learned to connect images(影像) with either rewards or punishments. In one experiment, some of the participants were first stressed by having to give a speech and do difficult math problems in front of an audience; in the other, some were stressed by having to keep their hands in ice water. In both cases, the stressed participants remembered the rewarded material more accurately and the punished material less accurately than those who hadn’t gone through the stress.

　　This phenomenon is likely not surprising to anyone who has tried to resist eating cookies or smoking a cigarette while under stress –at those moments, only the pleasure associated with such activities comes to mind. But the findings further suggest that stress may bring about a double effect. Not only are rewarding experiences remembered better, but negative consequences are also easily recalled.

　　The research also found that stress appears to affect decision-making differently in men and women. While both men and women tend to focus on rewards and less on consequences under stress, their responses to risk turn out to be different.

　　Men who had been stressed by the cold-water task tended to take more risks in the experiment while women responded in the opposite way. In stressful situations in which risk-taking can pay off big, men may tend to do better, when caution weighs more, however, women will win.

　　This tendency to slow down and become more cautious when decisions are risky might also help explain why women are less likely to become addicted than men: they may more often avoid making the risky choices that eventually harden into addiction.

1.We can learn from the passage that people under pressure tend to ______.

A．keep rewards better in their memory

B．recall consequences more effortlessly

C．make risky decisions more frequently

D．learn a subject more effectively

2.According to the research, stress affects people most probably in their ______.

A．ways of making choices B．preference for pleasure

C．tolerance of punishments D．responses to suggestions

3.The research has proved that in a stressful situation, ______.

A．women find it easier to fall into certain habits

B．men have a greater tendency to slow down

C．women focus more on outcomes

D．men are more likely to take risks

Rising levels of carbon dioxide in the atmosphere are a major cause of climate change, and now a new study has confirmed that atmospheric CO₂ is also affecting the ocean chemistry and potentially harming sea life.

Montana State University scientist Robert Dore has been researching the water in the Pacific Ocean for almost two decades. We've been going to the same spot in the Pacific Ocean, and we try and characterize long-term change in the open ocean environment. And one of the key things that we measure is CO₂ levels. And we've been able to record this increasing quantity of atmospheric CO₂ into the ocean.

Scientists expected that as atmospheric CO₂ increased, more and more of the carbon dioxide would be absorbed into the ocean, affecting the chemical balance of the sea water, with a potentially harmful impact on shellfish and coral in particular.

"As carbon dioxide dissolves（溶解） in the water, or seawater in this case, it forms a weak acid, carbonic acid," Dore explains. "And therefore, as the concentration of CO₂ in the atmosphere goes up and that exchanges with the surface seawater, it drives the PH down, and makes it more acidic."

The seawater Dore and his colleagues have analyzed confirms what the theory predicts.

The effect was particular striking at about 250 meters down, and again at 500 meters. Dore and his colleagues came up with two possible explanations. It could be that surface water picked up CO₂ and then moved to those depths. Or there could be a biological explanation.

"It's important to realize that the oceans are really becoming acidic. And it can have negative（消极的） impacts on a whole variety of sea life from fish to coral. It's potentially catastrophic."

1.What can be the best title of the passage?

A．Sea Life Facing Danger

B．Scientist Researching Seawater

C．Oceans Becoming More Acidic

D．Climate Change Affecting Seawater

2.With the increase of atmospheric CO₂， .

A．more corals will appear in the sea

B．the surface water is becoming warmer

C．the chemical balance of the seawater is affected

D．the PH of the ocean out here has been increasing

3.Which of the following shows the process of the impact of atmospheric CO₂ on sea life?

a．Sea life is endangered．

b．CO₂ goes into the surface water．

c．The ocean chemistry is affected．

d．CO₂decreases the PH and makes the seawater more acidic．

e．CO₂ levels in the atmosphere go up．

4.Scientist Robert Dore came to the conclusion based on .

A．his research and analysis

B．the expectation of other scientists

C．some former theory

D．a major cause of climate change

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