首页
登录
职称英语
We have heard a lot about the health benefits of tea, especially green tea.
We have heard a lot about the health benefits of tea, especially green tea.
游客
2024-01-15
62
管理
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. [br] 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
事实细节题。题干大意:本文表明红茶与绿茶的不同之处在于( )。文章第三段涉及红茶与绿茶的区别。乌龙茶或红茶特有的制作工艺,不仅使茶叶色泽发暗,改变茶的味道,而且减少了茶多酚的含量。这表明,红茶的茶多酚含量比绿茶少,这就是红茶与绿茶的区别之处。
转载请注明原文地址:https://www.tihaiku.com/zcyy/3366025.html
相关试题推荐
Thevitaminsnecessaryforahealthybodyarenormallysuppliedbyagoodmi
Thevitaminsnecessaryforahealthybodyarenormallysuppliedbyagoodmi
Theybuiltthewallespeciallyhighsothatthelittleboycouldn’t______it.A、g
Increasingly,overthepasttenyears,people—especiallyyoungpeople—haveb
Increasingly,overthepasttenyears,people—especiallyyoungpeople—haveb
Increasingly,overthepasttenyears,people—especiallyyoungpeople—haveb
Citizensinthiscountryarenowenjoyingbetterdentalhealth,asshownbythe
Internetuseappearstocauseadropinpsychologicalhealth,accordingtore
Internetuseappearstocauseadropinpsychologicalhealth,accordingtore
Stressfulenvironmentsleadtounhealthysuchaspooreatinghabits,which_____
随机试题
John:DearTom,whydon’tyoucomeonholidaywithus?Tom:______A、That’svery
Thedeclineinmoralstandards—whichhaslongconcernedsocialanalysts—has
(1)Whatdoyoucallsomeonewhoisover65butnotyetelderly?Thisstage
I’veneverbeenabletoworkherout.Theunderlinedpartmeans______.A、towork
闪光细胞可见于、A.肾盂肾炎活动期B.急性肾衰竭C.慢性肾衰竭D.急性肾小球肾炎
各种运输方式内外部的各个方面的构成和联系,就是( )。 A.运输系统
根据《城市居住区规划设计规范》规定,住宅侧面间距、条式住宅、多层住宅之间不宜小于
慢性呼吸衰竭最常并发的酸碱平衡失调是 A.代谢性酸中毒B.代谢性碱中毒C.
德育工作中,怎样用好奖励和处分?
填制凭证时,凭证正文包括的内容有()。A、摘要 B、科目 C、金额 D、附
最新回复
(
0
)