问题 单项选择题

关于室间隔缺损,下列哪项描述不正确()

A.胸骨左缘第3-4肋间闻及响亮粗糙3/6级收缩期杂音

B.肺动脉第2音亢进

C.心尖区可闻及舒张期杂音

D.小型缺损在婴儿期出现症状

E.可伴有震颤

答案

参考答案:D

阅读理解

Does a drink a day keep heart attacks away? Over the past 20 years, numerous studies have found that moderate alcohol consumption, s ay, 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 suport of that theory. More important, the work provided the first solid indiction 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 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 reommend 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 behaviour 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 neighbourhood bar or liquor store.

1.The medical article quoted in the first paragraph indicates            .

the way in which alcohol can help the heart      

how a couple of cocktails daily can stop heart problems

why alcoholic drinks are dangerous to one’s health 

that reports on the advantages of alcohol were misled

2.Experiments showed that nondrinkers had .

A.larger amounts of good cholesterol

B.smaller amounts of good cholesterol

C.higher blood pressure

D.lower blood pressure3.According to the passage, moderate drinking            .

is recommended by most doctors for heart patients    

should be allowed on prescription

is still not medically advisable                     

is not related to liver problems

4.The main theme of this passage is .

the change in recent drinking habits                

the connection between cancer and alcohol

whether moderate drinkers outlive nondrinkers       

whether alcohol may be good for one’s health

单项选择题