69. Experiments showed that nondrinkers had___________.

A. Larger amounts of good cholesterol　　　 　 B. smaller amounts of good cholesterol

C. higher blood pressure　　　　　　　　 　　 D. lower blood pressure

68. The medical article quoted in the first paragraph indicates________.

A. the way in which alcohol can help the heart.

B. how a couple of cocktails daily can stop heart problems

C. why alcoholic drinks are dangerous to one’s health

D. that reports on the advantages of alcohol were misled

67. The title below which best expresses the idea of the passage is _________

A. Making School Buses Even Safer for Children

B. Seat Belts Needed on School Buses

C. Alternate Safety Devices and Procedures

D. Safety in and around School Buses

D

Does a drink a day keep heart attacks away? Over the past 20 years, numerous studies have found that moderate alcohol consumption, say, one or two beers, glasses of wine or cocktails daily helps to prevent coronary heart disease. Last week a report in the New England Journal of Medicine added strong new evidence in support of that theory. More important, the work provided the first solid　 indication of how alcohol works to protect the heart.

In the study, researchers from Boston’s Brigham and Women’s Hospital and Harvad Medical School compared the drinking habits of 340 men and women who had suffered recent heart attack with those of healthy people of the same age and sex. The scientists found that people who sip one to three drinks a day are about half as likely to suffer heart attacks as nondrinkers are. The apparent source of the protection: those who drank alcohol had higher blood levels of high density lipoproteins, the so called good cholesterol, which is known to prevent heart disease.

As evidence has mounted, some doctors have begun recommending a daily drink for patients of heart diseases. But most physicians are not ready to recommend a regular happy hour for everyone. The risks of teetotal ling(绝对戒酒 )are nothing compared with the dangers of too much alcohol, including high blood pressure, strokes and liver troubles---not to mention violent behavior and traffic accident. Moreover, some studies suggest that even moderate drinking may increase the incidence of breast and colon cancer. Until there is evidence that the benefits of a daily dose of alcohol outweigh the risks, most people won’t be able to take a doctor’s prescription to the neighborhood bar or liquor store.

66. It may be inferred from this passage that ___________.

A. many of the opponents of seat belt installation are parents and officials of the Department of Transportation.

B. proposals of seat belts on school buses would be seriously considered

C. an alternate safety device( raising seat backs four inches)may be taken into consideration

D. The Department of Transportation may either take the idea of seat belts or other measures when it reviews the whole situation

65. According to the passage, who has the greatest degree of control of the school buses “safety”?

A. A new Research Council

B. The Department of Transportation

C. The Medical Organization

D. National Highway Traffic Safety Administration

64. According to the passage, the “school bus ” is __________

A. the bus offered by the school and different from the public bus

B. the bus that has no difference from the public bus

C. the bus that is driven by the students

D. the bus that is not safe

63. The author’s attitude towards the coming space weapon development is _______.

A. optimistic　　 B. critical　　 　　　　　　 C. excited　　 　　　　　　 D. indifferent

C

Every day 25 million US children ride school buses. The safety record for these buses is much better than for passenger cars: but nevertheless, about 10 children are killed each year riding on large school buses, and nearly four times that number are killed outside buses in the loading zones. By and large, however, the nation’s school children are transported to and from school safety.

Even though the number of school bus accidents is not large, the safety of children is always of intense public concern. While everyone wants to see children transported safely, people are divided about what needs to be done- particularly whether seat belts should be compulsory.

People in favor of seat belts on school buses- many of them parents and medical organizations -argue that seat belts are necessary not only to reduce fatality and injury, but also to teach children lessons about the importance of using them routinely in any moving vehicle. A side benefit, they point out, is that seat belts help keep children in their seats, away from the bus driver.

People who object to seat belt installation suggest that children are already well protected by the school buses that follow the Nation Highway Traffic Safety Administration’s(NHTSA)safety requirements set in 1977. They also believe that many children won’t wear seat belts anyway, and that may damage the belts or use them as weapons to hurt other children.

A new Research council report on school bus safety suggest that there are alternate safety devices and procedures that may be more effective and less expensive . For example, the study committee suggested that raising seat backs four inches may have the same safety effectiveness as seat belts.

The report sponsored by the Department of transportation at the request of Congress, reviews seat belts extensively while taking a broader look at safety in and around school buses.

62. After reading this passage, it can be inferred that “___________ “.

A. George W. Bush’s directive to be issued will be against global opinions

B. The White House is right in explaining that US new space policy aims to protect satellites

C. US government has little difficulty in developing new space weapons

D. President George W. Bush and Bill Clinton share a lot in common

61. According to this passage, which of the following is NOT true?

A. President George W. Bush supports space weapon development.

B. The space weapon program will threaten world peace

C. Clinton government was poorer than Bush government.

D. The US space weapon project is very expensive.

60. Which of the following might be the best title for the passage?

A. US Military Plans

B. The Global Arms Race

C. A Comparison between Two Presidents

D. President George W. Bush and the World Peace