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
The Science Behind the Numbers That Govern Our Lives A)Numbers are everywhere in your life. You can assign a number to just abou
The Science Behind the Numbers That Govern Our Lives A)Numbers are everywhere in your life. You can assign a number to just abou
admin
2014-09-30
31
问题
The Science Behind the Numbers That Govern Our Lives
A)Numbers are everywhere in your life. You can assign a number to just about anything. Numbers work because they get our attention, but they’re also fairly easy to manipulate. Here’s the latest thinking about the science behind the numbers that govern our lives.
5 portions of fruit and vegetables a day
B)"It’s a lot more useful than ’eat a varied diet’," says Mike Rayner, director of the Nuffield Department of Population Health, "because how do we know what that really means? Health messages tend to work if they capture the public’s imagination. There’s a mixture of art and science in setting them at the right level, between what’s ideal and what’s pragmatic. "
C)And so it was with the five-a-day campaign, which began in 1994. "We adopted a five-a-day message because the Americans had a similar scheme, and the World Health Organisation’s recommendation was 400g a day, which was about 50% more than the average person in the UK was eating," Rayner says. But in the countries where the WHO had found the lowest levels of heart disease and cancers linked to diet, the average person was eating far more fruit and vegetable—around 10 portions a day—and other countries recommend greater amounts: in Denmark, it’s 600g; in Greece, it’s six portions of vegetables and three of fruit. So although five will do you good, more might be better. It’s estimated that most people in the UK still average only three portions. "Based on this rate of increase," Rayner says, "it will take decades before we’re hitting the target."
2 000 calories a day for women, 2 500 for men
D)In the documentary Super Size Me, Morgan Spurlock’s camera crew ask people on the street to define "calorie". Most can’t. As Marion Nestle and Maiden Nesheim recount in their book Why Calories Count: From Science To Politics, Spurlock’s crew "could not find even one person who could come up with a reasonable definition".
E)There are actually five different measurements for calories as a unit of energy. The guideline we most commonly think of—2 000, or 2 500 a day—is in calories with a small c. Around two-thirds of the total calories you need are defined by your basal metabolic rate(BMR)—the amount of energy you expend just existing: that’s breathing, brain function, blood circulation. On top of that, anything you do, including shivering or fidgeting(坐立不安), let alone walking or running, will increase the number of calories you need.
F)Your BMR is affected by your weight and height(different formula will give different totals)and the amount of activity each of us does each day will vary greatly. So do the average calorie guidelines really apply to any of us? "It’s hard to arrive at anything approaching the correct number without doing expensive tests involving non-radioactive isotopes(同位素)," admits Nestle. So, would we be better off using one of those online calculators that gives us an individual number? "Good grief, no," she says. "If you are going to buy anything, get a scale that works. And use it. By adulthood, people know whether or not they have a weight-gain problem. If they do, they need to eat less. This isn’t rocket science. It’s just figuring out how to balance food intake against calorie needs, and a scale tells you everything you need to know. "
G)So why do we bother having recommended averages at all? Because, Nestle says, most of us dramatically underestimate how many calories there are in food and, therefore, what a portion size should look like. "If I had one thing to teach the world, it would be that larger portions have more calories," she says. "I wish this were as intuitive as it sounds, but it’s not. "
8 hours’ sleep a night
H)For every person who will tell you that Margaret Thatcher got by on four hours a night, a study will show that the average person needs between seven and nine hours of sleep to function well. If you regularly average less than seven hours, then you have an increased risk of depression, diabetes and heart problems. But sleeping for more than nine hours a night has also been associated with an increase in the likelihood of physical and mental-health issues.
I)Myths about our sleep abound. Is every hour of sleep before midnight worth more than the hours after? There’s little evidence to support this, although one study showed that people performed better when they’d had more sleep after midnight, contradicting the myth. Do you need to get your sleep in one block? Again, this may not be true. But some historians believe that "segmented sleep" used to be the norm. Roger Ekirch made a study of sleep throughout the ages, and found many references in different languages to a "first" and "second" sleep. People would get up between the sleeps, and use the time to pray, reflect on their dreams, have sex or even visit neighbors.
J)Dr. Thomas of the US Institute of Mental Health asked patients to spend a month living without artificial light. By the end of his experiment, the patients had all fallen into a pattern of sleeping for three or four hours, waking for an hour or so then sleeping for another four hours or so, and they reported never having felt so rested. What is almost certainly important, though, is going through the different stages of the sleep cycle, from light, to "slow wave", to REM(the average person goes through about four or five sleep cycles of 90-120 minutes a night). If your sleep is constantly interrupted, your body may not be reaching the right state of sleep it needs in order to repair itself.
30 minutes’ exercise, 5 times a week
K)Despite our 2012 Olympic summer, a report from Sport England found that the number of adults playing traditionally popular sports such as football, rugby and squash has fallen in the past year.
L)You’ve probably heard that the recommended amount of exercise is half an hour’s moderate aerobic(有氧的)activity at least five times a week. The official guideline from the Department of Health is at least 150 minutes a week, so it suggests you break it up into five half-hour sessions. But, within that, there are other suggestions. On two days or more a week, your physical activity should include strengthening exercises that work all the major muscle groups. Oh, and instead of 150 minutes of moderate exercise, you could do 75 minutes of vigorous intensity activity, "such as running or a game of singles tennis"(plus your muscle strengthening). Or, if you like, you can do a mix of the two. Not exactly catchy, is it?
M)"Sometimes messages are refined for the sake of making them more accurate, but it means people can’t always remember what they are," Nuffield’s Mike Rayner says. "These things only need to be changed lightly and only when they are overwhelmingly out of date. "
N)Even if you’re meeting the recommended quota, it will only count for so much if you then drive to work and sit at a computer for nine hours. A review by the American Journal of Clinical Nutrition conceded that the average of 30 minutes daily "may be insufficient to prevent unhealthful weight gain for some, perhaps many, but probably not all, persons".
According to the WHO, people at the lowest risk of developing heart disease and cancers tend to eat approximately 10 portions of fruit and vegetables a day.
选项
答案
C
解析
细节辨认题。由定位句可知,在世界卫生组织发现的患心脏病和癌症(与饮食相关的)几率最低的几个国家里,人均所吃的水果和蔬菜要多很多——大约每天10份水果和蔬菜。题干与定位句意思一致,故答案为C)。
转载请注明原文地址:https://kaotiyun.com/show/2Hm7777K
0
大学英语六级
相关试题推荐
A、Studentsinhighschool.B、Thegeneralpublic.C、Musiciansandolderjazzlovers.D、Dancersandpopsingers.C原文提及“现在爵士乐已经发展成为
Somepeople’searsproducewaxlikebusylittlebees.Thiscanbeaproblemeventhoughearwax(耳垢)appearstoserveanimportant
A、Throughhishardworkattraining.B、Throughhistrainingasapreacher.C、Throughhisreputationasapreacher.D、Throughhis
A、Takehertoanotherhike.B、Gohikingagainnextweek.C、Plananotherrallynextweek.D、Gototherallywhenittakesplacea
TheU.S.governmentisaskingAmericanstoeatlessandexercisemoreinanefforttostemthecountry’sincreasingepidemicof
Anysecondaryschoolpupilsnotplanningtogotouniversitywouldbegivenaclearer"routeintowork"underLabourpartyplans
A、Hehadapilot’suniform.B、HehadanIDforPanAmAirline.C、Hehadapilotbankaccount.D、Hehadgrayhair.D短文中提到Frank设法
A、Keepondriving.B、Permithisdaughtertodrive.C、Showdrivingskillstohisdaughter.D、Teachhisdaughterhowtodrive.A对话
CanthePCIndustryResurrectItself?A)InternetDataCenter’s(IDC)recentreportstatedthatPCshipmentsdeclined13.9%lastqu
A、Inthelibrary.B、Inausedbookstore.C、Inthestreet.D、Inahistoricalmuseum.B
随机试题
急腹症应首选的摄影体位是
手太阴肺经在上肢的分布是
A.国务院药品监督管理部门B.国务院药品监督管理部门和国务院农业主管部门C.国务院药品监督管理部门会同国务院卫生主管部门D.国务院药品监督管理部门会同国务院公安部门E.国务院农业主管部门制定麻醉药品药用原植物年度种植计划的部门是()。
下列关于期间的说法,正确的是哪些?
下列属于会计电算化档案管理基本要求的有()。
以下关于个人汽车贷款额度描述正确的是()。
2014年2月5日,马某与陈某订立一份房屋买卖合同,约定陈某购买马某的房屋一套(以下称1号房),价格80万元。并约定,合同签订后一周内陈某先付20万元,交付房屋后付30万元,办理过户登记后付30万元。2月8日,梁某得知马某欲将该房屋出卖,表示愿出90万元购
2015年保险公司原保险保费收入24282.52亿元,同比增长20.00%,比上一年高2.51%。其中,产险业务原保险保费收入7994.97亿元,同比增长10.99%;寿险业务原保险保费收入13241.52亿元,同比增长21.46%;健康险业务原保险保费收
收视率
Mr.Watsonaskedthestudentsto______theirhomework.
最新回复
(
0
)