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2.A glass a day keeps obesity at bay.Alcohol has always been thought to cause weight gain because of its high sugar content,but new research suggests a glass a day could form part of a diet.Looking at past studies they found that,while heavy drinkers do put on weight,those who drink in moderation can actually lose weight.
A spokesman for the research team at Navarro University in Spain says,"Light to moderate alcohol intake,especially of wine,may be more likely to protect against,rather than promote,weight gain".The International Scientific Forum on Alcohol Research reviewed the findings and agreed with most of the conclusions,particularly that current data do not clearly indicate if moderate drinking increases weight.
Boston University's Dr.Harvey Finkel found that the biologic mechanisms (生物学机制) relating alcohol to changes in body weight are not properly understood.His team pointed out the strong protective effects of moderate drinking on the risk of getting conditions like diabetes(糖尿病),which relate to increasing obesity.Some studies suggest that even very obese people may be at lower risk of diabetes if they are moderate drinkers.
The group says alcohol provides calories that are quickly absorbed into the body and are not stored in fat,and that this process could explain the differences in its effects from those of other foods.They agree that future research should be directed towards assessing the roles of different types of alcoholic drinks,taking into consideration drinking patterns and including the past tendency of participants to gain weight.
For now there is little evidence that consuming small to moderate amounts of alcohol on a regular basis increases one's risk of becoming obese.What's more,a study three years ago suggested that reveratrol,a compound present in grapes and red wine,destroys fat cells.

46.The passage is mainly for thoseD.
A.who produce wine  
B.who are eager to lose weight
C.who go on a diet   
D.who have a drinking habit.
47.The underlined phrase"in moderation"in the first paragraph meansA.
A.properly          
B.carefully
C.excitedly         
D.frequently
48.Why has alcohol been thought to cause weight gain?B
A.Because its calories are stored in fat.
B.Because it is rich in sugar.
C.Because it changes drinking patterns.
D.Because it increases the risk of diabetes.
49.What can we learn from the passage?C
A.The specific roles of different types of alcoholic drinks are very clear.
B.Resveratrol is proved to increase the risk of becoming fat.
C.The research found moderate drinking has a strong protective effect.
D.Current data clearly show that moderate drinking increases weight.
50.What is most likely to be discussed in the paragraph that follows?B
A.How to do some easy experiments.
B.How to prove the finding mentioned above.
C.How to make wine in a healthy way.
D.How to reduce the calories contained in wine.

分析 一直以来酒是肥胖者的禁忌.但现在越来越多的研究表明有节制的饮酒不仅不会导致肥胖,而且其中的某些成分还能破坏肥胖细胞.所以,现在有一个理念:每天一杯可以防止肥胖症.文章正是对此观点的描述.

解答 46.D.主旨大意题.纵观全文可了解到作者在说酒与肥胖的关系并且建议a glass a day could form part of a diet可知,有饮酒习惯的人是最感兴趣的.故选D.
47.A.词义猜测题.excitedly兴奋地;carefully细心地,认真地;properly合适地;frequently频繁地.根据文章前一句"Looking at past studies they found that,while heavy drinkers do put on weight"中的heavy相对应,可推测原句说的应是适当饮酒的人.故选A.
48.B.推理判断题.根据文章第一段"Alcohol has always been thought to cause weight gain because of its high sugar content,"可知,因为含高糖物质,所以酒被认为能增肥.故选B.
49.C.细节理解题.根据文章"His team pointed out the strong protective effects of moderate drinking on the risk of getting conditions like diabetes,which relate to increasing obesity."可知,有节制的饮酒会有强烈的保护作用.C项描述正确.故选C.
50.B.推理判断题.作者开篇提出观点"酒不仅不增肥,有节制的饮酒还能减肥",下文中从不同角度证明前半部分没有明确的根据,最后作者提到葡萄酒中还有能破坏肥胖细胞的物质白藜芦醇.可推测接下来作者应该继续证明自己的观点.故选B.

点评 本文是健康环保类阅读,考查学生的细节理解和推理判断能力.做细节理解题时一定要找到文章中的原句,和题干进行比较,再做出正确选择.在做推理判断题时不要以个人的主观想象代替文章的事实,要根据文章事实进行合乎逻辑的推理判断.

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