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  3. There is nothing like the joy of finding out that something sinful is actually good for you, whether it’s sex, chocolate or a gl

There is nothing like the joy of finding out that something sinful is actually good for you, whether it’s sex, chocolate or a gl

admin2014-04-20  103
问题     There is nothing like the joy of finding out that something sinful is actually good for you, whether it’s sex, chocolate or a glass of fine red wine—or, for that matter, beer, whisky or a satisfying aperitif. We’ve long heard exciting hints that red wine has unique benefits for the heart. But the same sunny reputation for heart health is now starting to shine on all liquor. " No matter where you look, the dominant alcoholic beverage is beneficial—whether it’s red wine in France and Italy, sake in Japan or beer in Germany," says Dr. Walter Willett, chair of nutrition at the Harvard School of Public Health.
    This has led researchers to an inescapable conclusion. As healthful as components of red wine may be, the primary benefit must come from ethanol itself. In short, it’s the alcohol, stupid. But don’t go overboard. Protection comes only with light to moderate intake—two drinks a day for men or a miserly one a day for women.
    The major benefit of alcohol seems to come from its ability to boost levels of HDL, the good cholesterol that helps keep arteries clear of plaque. Ethanol does that by signaling the liver to make more of a substance called Apo Al, the major protein in HDL. The effects can be striking. "Depending on the individual, you can get increases of 10 to 30 percent in HDL in a week," says Harvard epidemiologist Eric Rimm. Alcohol also makes blood less sticky and less likely to form clots that cause heart attacks and strokes. It also appears to have mild anti-inflammatory effects. And it enhances insulin sensitivity—which may explain why moderate alcohol consumption correlates with a lower incidence of type 2 diabetes.
    But alcohol is a dietary Jekyll and Hyde. Heavy intake can raise blood pressure, increase irregular heartbeat, and lead to heart failure. The most sobering news concerns cancer. A recent analysis of 156 studies found that as alcohol intake increases, so do risks of tumors in the mouth, and liver. Even moderate drinking can boost breast-cancer risk a small amount.
    Is moderate drinking worth the risks? For some people—pregnant women, people with liver disease or a history of alcoholism—the answer is no. But for most of us, the benefits will probably outweigh the hazards. Whether you sip wine, beer or spirits, your heart may thank you.  
It can be inferred from Paragraph 3 that______.
选项 A、alcohol can lower the risk of plaque in arteries
B、some components of wine is bad for health
C、chocolate is good for health
D、alcohol can be used as medicine
答案A
解析 推断题。由题干直接定位第三段。根据[A]中的关键词arteries和plague可定位至第一句，该句指出：酒精的主要益处是提高HDL的水平，HDL能够帮助动脉清除脂肪沉积的有益胆固醇。故可推断[A]为答案。第三段分析了酒精对人体的好处：帮助动脉清除疫病、稀释血液、防止血栓、提高胰岛素的灵敏度。此处没有提到酒精的害处，因此排除[B]。开篇首句提到了chocolate，第三段没有涉及巧克力，[C]无依据，故排除。[D]属于过度推断，第三段只是介绍了酒精的几个好处，没有提到或暗示可以当作药物使用，排除。
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