题目内容
3.A few cups of green tea each day may help prevent heart disease,Greek researchers said on Wednesday.A study published in the European Journal of Cardiovascular (心血管的) Prevention showed further evidence of the potential health benefits from tea already linked to a reduced risk of a range of cancers and other conditions.The study showed that green tea improves blood flow and the ability of arteries (动脉) to relax,said Charalambos Vlachopoulos,an expert at the Athens Medical School in Greece who worked on the study.
Other studies have shown that black tea also has benefits for cardiovascular health.
The Greek team said they believed green tea might be even better because it had higher quantities of beneficial substances called flavonoids (类黄酮)-some of which are lost in the oxidation (氧化) process that black tea undergoes.
Flavonoids are also found in cocoa,tomatoes and grapes."A couple of cups a day would probably be good for people,"Vlachopoulos said."This is the first study to show these effects for green tea."
The researchers gave 14healthy volunteers either green tea,coffee or hot water and then measured the function of endothelial cells (内皮细胞).These cells help relax arteries and ease blood flow."What is important is these effects are evident within 30minutes,"Vlachopoulos said.
The measurements taken 30,90and 120minutes following consumption showed an almost immediate benefit among people who had drunk green tea,he said.While the researchers looked only at a short-term effect,Vlachopoulos said the team's studies suggest the protection is long-lasting.
"Green tea is consumed less in the Western world than black tea,but it could be more beneficial,"he said.
32.What would be the best title for the passage?B
A.Benefits from Black Tea
B.Green Tea Protects Against Heart Disease
C.Different Kinds of Tea
D.Green Tea Reduces the Risk of Cancer
33.According to the study,green tea can do the following EXCEPTB.
A.improve blood flow
B.increase the oxidation rate of flavonoids
C.help relax arteries
D.benefit cardiovascular health
34.Which of the following statements is TRUE?A
A.Green tea contains more flavonoids than black tea.
B.Green tea is better than black tea because it has been processed.
C.Vlachopoulos's study is based on many years'research.
D.Vlachopoulos's study shows the effects of Green tea are not evident in short time.
35.We can learn from the passage thatD.
A.14volunteers with heart disease joined in the experiment
B.it takes an hour for green tea to take effect
C.Westerners prefer green tea to black tea
D.green tea has a long-lasting effect according to Vlachopoulos.
分析 本文是一篇说明文.本文主要介绍了每天喝几杯绿茶有助于预防心脏病.
解答 32-35 BBAD
32,答案:B 考查主旨大意.根据第一段中"A few cups of green tea each day may help prevent heart disease,Greek researchers said on Wednesday."可知,本文主要介绍了每天喝几杯绿茶有助于预防心脏病.故选B 项.
33,答案:B 考查细节理解.根据第二段中"The study showed that green tea improves blood flow and the ability of arteries (动脉) to relax"及第三段中"Other studies have shown that black tea also has benefits for cardiovascular health."可知,绿茶能够促进血液流动,并能增强动脉疏通能力,对心血管健康也有好处.故选B项.
34,答案:A考查细节理解.根据第四段中"The Greek team said they believed green tea might be even better because it had higher quantities of beneficial substances called flavonoids (类黄酮)-some of which are lost in the oxidation (氧化) process that black tea undergoes."可知,研究人员认为绿茶的心血管保健功效可能会更强,因为绿茶中所含的一种名叫"类黄酮"的有益物质较多,而这种物质在红茶氧化过程中会部分流失.故选A项.
35,答案:D 考查细节理解题.根据倒数第二段中"While the researchers looked only at a short-term effect,Vlachopoulos said the team's studies suggest the protection is long-lasting."可知,尽管研究人员只研究了绿茶的短期功效,但Vlachopoulos称,他们的研究表明这种保护是长期的.故选D项.
点评 阅读理解题测试考生在阅读基础上的逻辑推理能力,要求考生根据文章所述事件的逻辑关系,对未说明的趋势或结局作出合理的推断;或根据作者所阐述的观点理论,对文章未涉及的现象、事例给以解释.考生首先要仔细阅读短文,完整了解信息,准确把握作者观点.