首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
We have Heard a lot about the health benefits of tea, especially green tea. It is high in polyphenols , compounds with strong an
We have Heard a lot about the health benefits of tea, especially green tea. It is high in polyphenols , compounds with strong an
admin
2017-06-27
68
问题
We have Heard a lot about the health benefits of tea, especially green tea. It is high in polyphenols , compounds with strong antioxidant activity that in test-tube and animal models show anticancer and heart-protective effects. Good clinical studies are few, however, and although physicians tell their patients to drink green tea, there hasn’ t been any definite proof of the value of that advice.
A team of Japanese researchers was able to link green tea consumption with decreased mortality from many causes—including heart disease. The researchers tracked 40,530 healthy adults ages 40 to 79 in a region of northeastern Japan where most people drink green tea, following them for up to 11 years. Those who drank five or more cups of green tea a day had significantly lower mortality rates than those who drank less than one cup a day. There were also fewer deaths from cardiovascular disease.
But no such association was seen with deaths from cancer. Nor was consumption of oolong or black tea connected with any decrease in mortality. Those teas are easier to be combined with oxygen in processing, which not only darkens the color of the leaves and changes their flavor but also reduces their polyphenol content.
Coffee is more complicated. It has received both gold stars and black marks in medical literature. It, too, contains antioxidants, although they are less well studied than tea polyphenols. Evidence for the health benefits of coffee is growing, however. A group of investigators from Finland, Italy and the Netherlands reports that coffee seems to protect against age-related decline in mental capacity. The scientists studied 676 healthy men born from 1900 to 1920 and followed them for 10 years, using standardized measures of brain function. Their conclusion: the men who consumed coffee had significantly less decline in mental capacity than those who didn’ t. Three cups a day seemed to provide the most protection.
Population studies like those help us form assumptions about relationships between dietary habits and long-term health. We still have to test our suppositions in controlled conditions, and measure the effects of coffee and tea on various systems of the body.
The text indicates that black tea differs from green tea in that______.
选项
A、it can retain the color of its leaves
B、it can reduce cancer-related deaths
C、it contains less polyphenol content
D、it is stronger in flavor than the latter
答案
C
解析
细节题。从文章第三段第三句“Those teas are easier to becombined with oxygen in processing,which not only darkens the colorof the leaves and changes their flavor but also reduces their polyphenolcontent.”可知,红茶在处理过程中茶多酚含量减少,故选C。
转载请注明原文地址:https://jikaoti.com/ti/RELsFFFM
本试题收录于:
公共英语三级笔试题库公共英语(PETS)分类
0
公共英语三级笔试
公共英语(PETS)
相关试题推荐
Readthetextsfloraamagazinearticleabouthowtomaintainasustainableloverelationship.Forquestions61to65,matchthe
Ifyouareworriedaboutthingsandareunderalotofstressatworkorschool,thenyouareprobablynotsleepingwell.Worry
Readthefollowingtextsfromanarticleinwhichpeopletalkedabouthowapersonachievessuccessinlife.Forquestions61to
Sometimes,people【C1】______yourlifeandyourealizethattheyarethere【C2】______somepurpose,to【C3】______youalesson,orto
Sometimes,people【C1】______yourlifeandyourealizethattheyarethere【C2】______somepurpose,to【C3】______youalesson,orto
Writeacompositionofnolessthan100wordson"ChangesofPeople’sDiet".Studythefollowingtablecarefully,andyourcompo
Theconceptionofpovertyandwhatto【C1】______aboutithavechangedoverthedecades.UnderSocialDarwinismthelazyandthe【C
Theconceptionofpovertyandwhatto【C1】______aboutithavechangedoverthedecades.UnderSocialDarwinismthelazyandthe【C
Writeacompositionofabout120wordsonthetopicCreditCardsinthreeparagraphs.Usethetopicsentencesgivenbelowtodev
Whycan’ttheymeetonThursday?
随机试题
江泽民指出,加强文化建设,必须()
—Whereismycellphone?Ican’tfindit.—Well,you______haveputitsomewhere.
与外周血红细胞形态相关的疾病是A、镰形红细胞B、缗钱状红细胞C、泪滴形红细胞D、靶形红细胞E、棘形红细胞地中海贫血
斜向移乘训练中轮椅与床的倾斜角度为
通常情况下,BCWS在整个工作实施过程应保持不变,但当()时则会有变化。
中国银行业协会的主管单位是银监会。( )
某公司是一家亚洲地区的玻璃套装门分销商,套装门在中国香港生产然后运至上海。管理当局预计年度需求量为10000套。套装门的购进单价为395元(包括运费,单位是人民币,下同)。与定购和储存这些套装门相关资料如下:(1)去年的订单共22份,总处理成本
公安机关的专政职能是民主职能的基本保障。()
以下有关公文的说法错误的有()
ThemostwidelydiscussedalternativetothetraditionalcampusistheInternetUniversity—avoluntarycommunitytoscholars/tea
最新回复
(
0
)