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脂蛋白, the so called good cholesterol （胆固醇, 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 （吸收剂量of alcohol outweigh the risks, most people won’t be able to take a doctor’s prescription to the neighborhood bar or liquor store．

　　60．The

　　in the first paragraph indicates________．

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

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