If drinking coffee or tea has become part of your daily routine, you might wonder what it's doing to your long-term heart health. New research from Arteriosclerosis, Thrombosis, and Vascular Biology, a journal (期刊)of the American Heart Association, found that high tea consumption and proper coffee consumption may be associated with decreased rates of death from coronary heart disease ( CHD)(冠心病).
The study followed more than 37,000 tea and coffee drinkers over 13 years. Participants completed food recalls to document their typical intake of tea and coffee, and were divided into groups that ranged from light to heavy consumption. Researchers accounted for variables(变量)such as health histories, height, weight, and waist circumference (腰围)and recorded the number of deaths from cardiovascular (心血管的)disease and stroke during the study period.
Overall results showed that consuming more than six cups of tea per day was associated with a 36% lower risk of death from heart disease compared to consuming less than one cup of tea per day. There appeared to be no such protective effect of tea-drinking at any amount for risk of death from stroke. Among coffee drinkers, more proper consumption levels (2-3 cups per day) were associated with the greatest risk reduction for death from heart disease (21% ) compared to drinking less than one cup of coffee per day.
Researchers acknowledged certain inconclusive variables within their findings. For example, the difference between decaffeinated(去咖啡因的)and regular coffee could not be accurately accounted for, nor could specific recommendations be made for type of tea, though due to its popularity in the Netherlands where the study took place, researchers assumed most tea consumption to be black tea.
Furthermore, researchers found that tea and coffee drinkers had opposite lifestyles, with tea drinkers tending to engage in healthy lifestyle habits and coffee drinkers being more likely to eat less healthy and smoke. It was difficult to say with certainty what impact these other lifestyle variables may have contributed to the overall results.
25. What's the conclusion of the study?
A. People should drink tea and coffee as much as possible.
B. Drinking more tea may benefit people with CHD.
C. High tea consumption may reduce the rate of stroke.
D. Coffee consumption has nothing to do with heart disease.
26. Which of the following variables haven’t been considered?
A. Health histories. B. Height and weight.
C. Waist circumference. D. The type of tea and coffee.
27. What can be inferred from the last paragraph?
A. All people in the Netherlands like black tea.
B. Tea and coffee drinkers had a similar life style,
C. Other variables have no effect on the results.
D. There are still something uncertain about the study.
28. Which of the following might be the best title?
A. Why our heart loves coffee and tea, B. Drink more tea and coffee.
C. Heart disease will be reduced. D. An amazing findings about heart diseases.
BDDA
健康环保累阅读概念:
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健康环保类文章阅读技巧:
健康环保类文章常是介绍科学知识、生活常识和环境保护方面的短文。阅读此类短文要以现象或事物为中心进行思考,理解现象产生的原因、条件和客观规律等。同时要抓住事物的特征、用途和相互关系等。科普环保类文章一般为说明文,从结构上看大致可分为三个部分:
第一部分一般是文章的首段,主要用来提出文章的主题,即文章想要阐述、说明的主要内容;
第二部分是文章的主体,可由若干个段落组成,对文章的主题进行展开说明;
第三部分是结尾段,对文章的主题进行归纳总结。这类文章多用一般现在时,而且一般多使用客观性词语表述。有时为了强调客观性,也常使用被动语态。
从近几年的考试题来看,科普环保类的文章越来越与人们的实际生活相接近。由于此类文章缺乏故事情节,很多同学对此类文章感到费解。但一般的科普类文章都是就事论事,需要逻辑推理和想象的时候较少,因此此类阅读题也没有同学们想象中的那么难,只要多加训练,就能较好地答题。
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1、概要(Summarizing):
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A. The effects of flu and its symptoms B. Types of virus to cause flu C. People’s attitudes toward flu D. The cause of flu E. The way that flu spreads F. The methods to fight flu |
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Flu (which is short for influenza) is a highly infectious disease, the cause of which is a very tiny organism known as a virus. Several types of flu are recognized, depending on the type of virus that causes the disease.
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Flu can often cause problems in breathing, and general infection of the lung. With elderly and weak people, these added complications often produce serious results. The virus, if not properly treated, can weaken the body so that patient may develop more serious illnesses, such as pneumonia and bronchitis. When people catch flu, they often complain of a headache or a sore throat. They usually have a fever and their temperature rises from the normal 37℃ (98.6) to about 39.5℃ (103). Sometimes a person has a dry hacking cough and aching joints.
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Today many doctors use drugs that fight the disease. And scientists have also developed vaccines that help to prevent it. If the patient has proper treatment, and complete rest in bed, the virus is normally beaten within a week to ten days.
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How does flu spread so quickly? When the infected person breathes out, sneezes or coughs, he gives out droplets of moisture in the breath from his mouth or nose. These remain in the air for some time. Flu viruses are present in these droplets. If a person sneezes in a crowd or poorly ventilated place, such as a lift, viruses can easily be carried from an infected person to a healthy person. This is known as droplet infection. The healthy person will breathe in the viruses given out by the infected person.
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There are three main types of virus that cause flu, which are called type A, B and C. type A is the most powerful of the three, and undergoes minor changes in its genetic material every few years. The new form of the virus is called a strain. The new strain is not affected by the current vaccines. It is said to be “resistant” to them. So doctors must be continually producing new vaccines to combat the new strains of virus.