2017年6月英語六級長篇閱讀考題訓練
Do you love life? Then do not squander time; for that's the stuff life is made of.以下是小編爲大家搜索整理的2017年6月英語六級長篇閱讀考題訓練,希望能給大家帶來幫助!更多精彩內容請及時關注我們應屆畢業生考試網!
Definitions of Obesity
A: How does one define when a person is considered to be obese and not just somewhat overweight? Height-weight tables give an approximate guideline as to whether one is simply overweight or has passed into the obese stage.
B: The World Health Organization recommends using a formula that takes into account a person's height and weight. The "Body Mass Index" (BMI) is calculated by dividing the person's weight in kilograms by the square of their height in meters, and is thus given in units of kg/m2. A BMI of 18.5-24.9 is considered to be the healthiest. A BMI of between 25 and 29.9 is considered to be overweight, while a BMI of over 30 is considered to be obese.
C: However, it is recognized that this definition is limited as it does not take into account such variables as age, gender and ethnic origin, the latter being important as different ethnic groups have very different fat distributions. Another shortcoming is that it is not applicable to certain very muscular people such as athletes and bodybuilders, who can also have artificially high BMIs. Agencies such as the National Cholesterol Education Program (NCEP) in the USA and the International Diabetes Foundation (IDF) are starting to define obesity in adults simply in terms of waist circumference.
Health Effects of Obesity
D: Over 2000 years ago, the Greek physician Hippocrates wrote that "persons who are naturally very fat are apt to die earlier than those who are slender". This observation remains very true today. Obesity has a major impact on a person's physical, social and emotional well-being. It increases the risk of developing diabetes mellitus type 2 ("mature onset diabetes") and also makes Type 2 diabetes more difficult to control. Thus weight loss improves the levels of blood glucose and blood fats, and reduces blood pressure. The association between obesity and coronary heart disease is also well-known.
Cancer
E: Furthermore, in 2001 medical researchers established a link between being overweight and certain forms of cancer, and estimated that nearly 10,000 Britons per year develop cancer as a result of being overweight. This figure was made up of 5,893 women and 3,220 men, with the strongest associations being with breast and colon cancers. However, it is thought that being overweight may also increase the risk of cancer in the reproductive organs for women and in the prostate gland for men.
F: The link between breast cancer and nutritional status is thought to be due to the steroid hormones oestrogen and progesterone, which are produced by the ovaries, and govern a woman's menstrual cycle. Researchers have found that the more a woman eats, or the more sedentary her lifestyle, the higher are the concentrations of progesterone. This link could explain why women from less affluent countries have lower rates of breast cancer. Women from less affluent nations tend to eat less food and to lead lifestyles which involve more daily movement. This lowers their progesterone level, resulting in lower predisposition to breast cancer.
G: The Times newspaper, in 2002 reported that obesity was the main avoidable cause of cancer among non-smokers in the Western world!
Aging
H: Research published by St Thomas' Hospital, London, UK in 2005 showed a correlation between body fat and aging, to the extent that being obese added 8.8 years to a woman's biological age. The effect was exacerbated by smoking, and a non-overweight woman who smokes 20 cigarettes a day for 20 years added 7.4 years to their biological age. The combination of being obese and a smoker added at least ten years to a woman’s biological age, and although the study only involved women, the lead researcher Professor Tim Spector believes the finding would also apply to men.
I: The aging effect was determined by measuring the length of telomeres, tiny "caps" on the ends of chromosomes, which help protect the DNA from the ageing process. Indeed, telomeres have been dubbed the "chromosomal clock" because, as an organism ages, they become progressively shorter, and can be used to determine the age of the organism. Beyond a certain point, the telomere becomes so short that it is no longer able to prevent the DNA of the chromosome from falling apart. It is believed that excess body fat, and the chemicals present in tobacco smoke release free radicals which trigger inflammation. Inflammation causes the production of white blood cells which increases the rate of erosion of telomeres.
Dementia
J: Recent research (2005) conducted in the USA shows that obesity in middle age is linked to an increased risk of dementia, with obese people in their 40s being 74% more likely to develop dementia compared to those of normal weight. For those who are merely overweight, the lifetime risk of dementia risk was 35% higher.
K: Scientists from the Aging Research Centre at the Karolinska Institute in Sweden have been able to take information such as age, number of years in education, gender, body mass index, blood pressure level, physical activity and genetic factors, assigning each a risk score. They then used this information to devise a predictive test for dementia. This test will enable people at risk, for the first time, to be able to affect lifestyle changes which will reduce their risk of contracting dementia.
Other Problems
L: The world-wide upsurge in obesity, particularly in children, is of major economic concern, liable to drain economies. Of further concern is that research conducted in Australia and published in 2006, shows that up to one third of breech pregnancies were undetected by the traditional "palpation" examination, the danger being greatest for those women who are overweight or obese—a growing proportion of mothers. This means that such women are not getting the treatment required to turn the baby around in time for the birth, and in many cases require an emergency Caesarean section.
M: This is a true health-care crisis, far bigger than Severe Acute Respiratory Syndrome (SARS) and ultimately, even bigger than AIDS.
1. You can judge whether one is simply overweight or has passed into the obese stage according to the height-weight table.
2. Using the "Body Mass Index"to define a person's weight ideal is limited, because it does not takes into account many variables such as age, gender and ethnic origin.
3. A person's emotional well-being would be affected by obesity.
4. Obesity has something to do with cancer in the prostate gland for man.
5. Women from less affluent nations tend to have much less breast cancer.
6. A non-overweight woman who smokes 20 cigarettes a day for 20 years added 7.4 years to her biological age.
7. The excess body fat, like the chemicals present in tobacco smoke, can lead to inflammation.
8. Obese people in middle age run an increased risk of dementia .
9. The predictive test for dementia will help people to affect lifestyle changes that will reduce their risk of contracting dementia.
10. The world-wide upsurge in obesity, particularly in children, will possibly drain economies.
答案1. A
2. C
3. D
4. E
5. F
6. H
7. I
8. J
9. K
10. L
相關文章
-
2017年6月英語閱讀試題六級備考訓練
假如我變成了一顆亮閃閃的星星,爲了好玩,生長在高高的、晴朗的月空,開開心心的在月空中暢遊,又和月亮姐姐說話,媽媽,你會認出我嗎?你要是叫道:“孩子,你在哪裏呀?”我在天空中暗暗地匿笑,你卻毫無發覺。我悄悄地睜開眼睛,看着你工 -
2017年6月英語六級考試閱讀精選訓練題
藏書再多,倘不閱讀,就是一堆廢紙;讀書再多,倘不應用,就是一朵不結果實的花蕾。以下是小編爲大搜索整理的2017年6月英語六級考試閱讀精選訓練題,希望能給大家帶來幫助!更多精彩內容請及時關注我們應屆畢業生考試網! Camp -
2017年6月英語六級閱讀單項備考訓練題
great minds have purpose, others have wishes.以下是小編爲大家搜索整理的2017年6月英語六級閱讀單項備考訓練題,希望能給大家帶來幫助!更多精彩內容請及時關注我們應屆畢業生考試網!Every day 25 million U. S. chi -
2016年12月英語六級長篇閱讀訓練題
英語六級閱讀在考試中佔有分數的比例很大,拿下閱讀基本上英語六級考試就成功了一半。下面是yjbys網小編提供給大家關於語六級長篇閱讀訓練題,希望對大家的備考有所幫助。 Section BDirections: In this section, you -
2017年6月英語六級閱讀訓練題
學習和研究好比爬梯子,要一步一步地往上爬,企圖一腳跨上四五步,平地登天,那就必須會摔跤了。以下是小編爲大家搜索整理的2017年6月英語六級閱讀訓練題,希望能給大家帶來幫助!更多經常內容請及時年關注我們應屆畢業生考試網 -
2017年6月英語六級長篇閱讀練習題
the horse is running out, therefore is to fight out.以下是小編爲大家搜索整理的2017年6月英語六級長篇閱讀練習題,希望能給大家帶來幫助!更多精彩內容請及時關注我們應屆畢業生考試網! Words: 1,103 How Ozo -
2016年12月英語六級考試閱讀訓練題
閱讀題在四六級考試中佔了很大的比重,大家要多做閱讀題練習。下面是yjbys網小編提供給大家關於英語六級考試閱讀訓練題,希望對同學們有所幫助。Questions 56 to 60 are based on the followingpassage.They're stil -
2017年6月英語六級閱讀理解輔導訓練題
幻想在漫長的'生活征途中順水行舟的人,他的終點在下游。只有敢於揚起風帆,頂惡浪的勇士,才能爭到上游。 以下是小編爲大家搜索整理的2017年6月英語六級閱讀理解輔導訓練題,希望對正在關注的您有所幫助!更多精彩內容請及 -
2017年6月英語六級閱讀理解衝刺訓練題
Use a dictionary and grammar guide constantly. keep a small english dictionary with you at all time. when you see a new word, look it up. think about the word——use it, in your mind, in a s -
2016年12月英語六級閱讀理解備考訓練題
六級閱讀共由三部分組成,選詞填空、長篇閱讀信息匹配和仔細閱讀,三個題型一共40分鐘。以下是yjbys網小編整理的關於英語六級閱讀理解備考訓練題,供大家備考。As you all know, the United States is a country on wheels