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  3. Does a drink a day keep heart attacks away? Over tile past 20 years, numerous studies have found that moderate alcohol consumpti

Does a drink a day keep heart attacks away? Over tile past 20 years, numerous studies have found that moderate alcohol consumpti

admin2012-12-13  57
问题     Does a drink a day keep heart attacks away? Over tile 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 Harvard Medical School compared the drinking habits of 340 men and women who had suffered recent heart attacks 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 (脂蛋白), the so-called good cholesterol(胆固醇), which is known to repel 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 teetotalling (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 accidents. 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.
Experiments showed that nondrinkers had______.
选项 A、higher blood pressure
B、lower blood pressure
C、larger amounts of’ good cholesterol
D、smaller amounts of good cholesterol
答案D
解析 推理判断题。作者在第二段中先对实例进行对比，根据第二段最后一句可知：饮酒者的高密脂蛋白中的血含量更高，也就是所谓好的胆固醇高。由此町推知：不饮酒者的好的胆固醇较少，故D项为正确答案。
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