阅读理解

阅读下列短文，从每题所给的四个选项(A、B、C、D)中，选出最佳选项。

　　Our bodies are wonderfully skillful at keeping balance. When the temperature jumps, we sweat(出汗) to cool down. When our blood pressure falls, our hearts can do something. As it turns out, though, our natural state is always changing. Researchers are finding that everything from blood pressure to brain function(功能) changes regularly with the cycles of sun, moon and seasons. And their insights (洞察力) are getting new ways for keeping away such common killers as heart disease and cancer. Only one doctor in 20 has a good knowledge of the scientific use of time in medicine. But according to a new American Medical Association, three out of four are eager to change that. “The field is exploding,”says Michael Smolensky. “Doctors used to look at us like, ‘What spaceship did you get off?’ Now they're thirsty to know more.”

　　In medical school, most doctors learn that people with chronic(长期的) conditions should take their medicine regularly “It's a terrible way to treat disease,” says Dr Richard Martin. For example, asthmatics (气喘患者) are most likely to suffer during the night. Yet most patients try to keep a constant level of medicine in their blood day and night, whether by breathing in on an inhaler (吸入器) four times a day or taking a pill each morning and evening. In recent studies, researchers have found that a large midafternoon does of a bronchodilator (支气管扩张剂) can be as safe as several small doses, and better for preventing nighttime attacks.

　　If the night belongs to asthma, the dawn belongs to high blood pressure and heart disease. Heart attacks are twice as common at 9 a. m. as at 11 p. m. Part of the reason is that our blood pressure falls at night, then rises as we start to work for the day. “Doctors know that,” says Dr. Henry Black of Chicago's Medical Center, “but until now, we haven't been able to do anything about it.” Most blood - pressure drugs provide 18 to 20 hours of relief (减缓). But because they're taken in the morning, they're least effective when most needed. “You take your pill at 7 and it's working by 9,” says Dr. William White of the University of Connecticut Health Center “But by that time you've gone through the worst four hours of the day with no protection.” Bedtime medicine would prevent high blood pressure, but it would also push blood pressure to dangerously low levels during the night.

1．According to the passage, how do human bodies keep balance?

[　　]

A．They make some change timely according to their physical conditions.

B．People increase or lower the body temperature by sweating.

C．People's hearts keep beating when the blood pressure goes up.

D．Both B and C.

2．Researchers are finding that ________.

[　　]

A．heart disease and cancer are the most common killers of human beings

B．blood pressure and brain function are decided by cycles of sun, moon and seasons

C．the functions of human bodies have much to do with nature

D．any change in human bodies goes with changes in the surroundings

3．According to the author, it is best for asthmatics to take their medicine ________.

[　　]

A．at certain time

B．each morning and evening

C．when the disease occurs

D．at midafternoon

4．Which of the following statements is NOT true?

[　　]

A．Doctors know more about illnesses than before.

B．Doctors in the U. S. used to be thirsty to know more about the new medical field.

C．The researchers' insights are providing new methods to prevent common killers.

D．The correct use of time in medicine attracts more attention in medical circle in the U.S.A.

5．The suggested title for this passage might be ________.

[　　]

A．Medicine Is Everything

B．Treatment Is Everything

C．Timing Is Everything

D．Prevention Is Everything

One of the greatest killers in the Western world is heart disease, The death rate (率) from the disease has been increasing at an alarming speed for the past thirty years. Today in Britain, for example, about four hundred people a day die of heart disease. Medical experts know that people can reduce their chances of getting heart disease by exercising regularly, by not smoking, by changing their diets, and by paying more attention to reducing stress(压力)in their work.

However, Western health-care systems are still not paying enough attention to the prevention of the disease. There is a need for more programs to educate the public about the causes and prevention of heart disease. Instead of supporting such programs, however, the U. S. health-care system is spending large sums of money on the surgical (外科的) treatment of the disease after it develops. This emphasis(强调)on treatment clearly has something to do with the technological advances that have taken place in the past ten to fifteen years. In this time, modern technology has enabled doctors to develop new surgical techniques. Many operations that were considered impossible of too risky(有风险的)a few years ago are now performed every day in U. S. hospitals. The result has been a huge increase in heart surgery.

Although there is no doubt that heart surgery can help a large number of people, some people point out that the emphasis on the surgical treatment of the disease has three clear disadvantages. First, it attracts interest and money away from the question of prevention. Second, it causes the costs of general hospital care to rice. After hospitals buy the expensive equipment that is necessary for modern heart surgery, they must try to recover the money they have spent. To do this, they raise costs for all their patients, not just those patients whose treatment requires the equipment. The third patients, not just those patients whose treatment requires the equipment. The third disadvantage is that doctors are encouraged to perform surgery-even on patients for whom an operation is unnecessary-because the equipment and expert skills are there. A government office recently stated that major heart surgery, for example, only 15 percent of patients improved their conditions after the surgery. However, more than 100,000 of these operations are performed in the United States every year.

1. What effect has modern technology had on medicine?

A. It has reduced the costs of medical treatment.

B. It has helped save the lives of most patients.

C. It has encouraged doctors to do more heart surgeries.

D.  It has helped educate people about the prevention of heart disease.

2. “To do this”(in Paragraph 3) means_______.

A. to help patients recover

B. to increase the number of heart surgeries

C. to get back the money spent on the equipment

D. to buy new equipment for the treatment of heart disease

3. The author would agree that ________.

A. more money should be spent on the prevention of heart disease

B. heart surgery has helped most patients improve their conditions

C. modern technology has made heart surgery more risky than before

D. the public have known a great deal about the causes of heart disease

4. What would be the best title for the passage?

A. The Greatest Killer in the West

B. Heart Disease: Treat or Prevent

C. Modern Technology and Heart Surgery

D. Heart Surgery: Advantages and Disadvantages

　　One of the greatest killers in the Western world is heart disease．The death rate (率) from the disease has been increasing at an alarming speed for the past thirty years．Today in Britain, for example, about four hundred people a day die of heart disease．Medical experts know that people can reduce their chances of getting heart disease by exercising regularly, by not smoking, by changing their diets, and by paying more attention to reducing stress in their work．

　　However, western health-care systems are still not paying enough attention to the prevention of the disease．There is a need for more programs to educate the public about the causes and prevention of heart disease．Instead of supporting such programs, however, the U．S．health-care system is spending large sums of money on the surgical (外科的)) treatment of the disease after it develops．This emphasis on treatment clearly has something to do with the technological advances that have taken place in the past ten to fifteen years．In this time, modern technology has enabled doctors to develop new surgical techniques．Many operations that were considered impossible or too risky (有风险的) a few years ago are now performed every day in U．S．hospitals．The result has been a huge increase in heart surgery．

　　Although there is no doubt that heart surgery can help a large number of people, some people point out that the emphasis on the surgical treatment of the disease has three clear disadvantages．First, it attracts interest and money away from the question of prevention．Second, it causes the costs of general hospital care to rise．After hospitals buy the expensive equipment that is necessary for modern heart surgery, they must try to recover the money they have spent．To do this, they raise costs for all their patients, not just those patients whose treatment requires the equipment．The third disadvantage is that doctors are encouraged to perform surgery even on patients for whom an operation is unnecessary because the equipment and expert skills are there．A government office recently stated that major heart surgery was often performed even though its chances of success were low．In one type of heart surgery, for example, only 15 percent of patients improved their conditions after the surgery．However, more than 100,000 of these operations are performed in the United States every year．

1．What effect has modern technology had on medicine?

[　　]

A．It has reduced the costs of medical treatment．

B．It has helped save the lives of most patients．

C．It has encouraged doctors to do more heart surgeries．

D．It has helped educate people about the prevention of heart disease．

2．“To do this” in Paragraph 3 means________．

[　　]

A．to help patients recover

B．to increase the number of heart surgeries

C．to get back the money spent on the equipment

D．to buy new equipment for the treatment of heart disease

3．The author would agree that________．

[　　]

A．more money should be spent on the prevention of heart disease

B．heart surgery has helped most patients improve their conditions

C．modern technology has made heart surgery more risky than before

D．the public have known a great deal about the causes of heart disease

4．What would be the best title for the passage?

[　　]

A．The Greatest Killer in the West

B．Heart Disease: Treat or Prevent

C．Modern Technology and Heart Surgery

D．Heart Surgery: Advantages and Disadvantages

阅读理解

　　One of the greatest killers in the Western world is heart disease. The death rate from the disease has been increasing at an alarming speed for the past thirty years. Today in Britain, for example, about four hundred people a day die of heart disease. Medical experts know that people can reduce their chances of getting heart disease by exercising reducing stress in their work.

　　However, Western health-care systems are still not paying enough attention to the prevention of the disease. There is a need for more programs to educate the public about the causes and prevention of heart disease. Instead of supporting such programs, however, the U. S. health-care system is spending large sums of money on the surgical(外科的) treatment of the disease after it develops. This emphasis on the treatment clearly has something to do with the technological advances that have taken place in the past ten to fifteen years. In this time, modern technology has enabled doctors to develop new surgical techniques. Many operations that were considered impossible or too risky a few years ago are now performed every day in U. S. hospitals. The result has been a huge increase in heart surgery.

　　Although there is no doubt that heart surgery can help a large number of people, some people point out that the emphasis on the surgical treatment of the disease has three clear disadvantages: First, it attracts interest and money away from the question of prevention. Second, it causes the costs of general care to rise. After hospitals buy the expensive equipment that is necessary for modern heart surgery, they must try to recover the money they have spent. To do this, they raise for all their patients, not just those patients whose treatment requires the equipment. The third disadvantage is that doctors are encouraged to perform surgery even on patients for whom an operation is unnecessary because the equipment and expert skills are there. A government office recently stated that major heart surgery was often performed even though its chances of success were low. In one type of heart surgery, for example, only 15 percent of patients improved their conditions after the surgery. However, more than 100000 of these operations are performed in the United States every year.

1．What effect has modern technology had on medicine?

[　　]

A．It has reduced the costs of medical treatment.

B．It has helped save the lives of most patients.

C．It has encouraged doctors to do more heart surgery.

D．It has helped educate people about the prevention of heart disease.

2．The underlined part “To do this”(in Paragraph 3) refers to ________.

[　　]

A．to help patients recover

B．to increase the number of heart surgery

C．to get back the money spent on the equipment

D．to buy new equipment for the treatment of heart disease

3．The author would agree that ________.

[　　]

A．more money should be spent on the prevention of heart disease

B．heart surgery has helped most patients improve their conditions

C．modern technology has made heart surgery more risky than before

D．the public have known a great deal about the causes of heart disease

4．What would be the best title for the passage?

[　　]

A．The Greatest Killer in the West

B．Heart Disease: Treat or Prevent?

C．Modern Technology and Heart Surgery

D．Heart Surgery: Advantages and Disadvantages