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
Many of us sit in front of a computer for eight hours a day, and then go home and head for the couch to surf the Web or watch te
Many of us sit in front of a computer for eight hours a day, and then go home and head for the couch to surf the Web or watch te
admin
2012-05-17
27
问题
Many of us sit in front of a computer for eight hours a day, and then go home and head for the couch to surf the Web or watch television, exchanging one seat and screen for another. Even if we try to squeeze in an hour at the gym, is it enough to counteract (抵消) all that motionless sitting?
A mounting body of evidence suggests not.
Increasingly, research is focusing not on how much exercise people get, but how much of their time is spent in sedentary (久坐的) activity, and the harm that does.
The latest findings, published this week in The Journal of the American College of Cardiology, indicate that the amount of leisure time spent sitting in front of a screen can have such an overwhelming, seemingly irreparable (无法弥补的) impact on one’s health that physical activity doesn’t produce much benefit.
The study followed 4,512 middle-aged Scottish men for a little more than four years on average. It found that those who said they spent two or more leisure hours a day sitting in front of a screen were at double the risk of a heart attack or other heart events compared with those who watched less. Those who spent four or more hours of recreational time in front of a screen were 50 percent more likely to die of any cause. It didn’t matter whether the men were physically active for several hours a week — exercise didn’t reduce the risk associated with the high amount of sedentary screen time.
The study is not the first to suggest that sedentary activities like television viewing may be harmful. A 2009 study reported that young children who watch one and a half to five and a half hours of TV a day have higher blood pressure readings than those who watch less than half an hour, even if they are thin and physically active.
Recreational screen time has an "independent, injurious relationship" with heart and the blood vessels events and death of all causes, the paper concluded, possibly because it induces metabolic (新 陈代谢) changes.
The study focused on recreational screen time because it’s the easiest to reduce, Dr. Stamatakis said. But he encouraged employees who work at computers all day to get up and take breaks and short walks periodically.
According to the passage, more and more evidence proves that______.
选项
A、people doing regular exercises after work tend to enjoy good health
B、people nowadays seem to spend excessive time seated at home
C、the time people spend watching TV is increasing dramatically
D、physical activities don’t reduce the bad effect of long time’s sitting
答案
D
解析
根据题干中的evidence将本题出处定位到第二段。首段末句提到:即使我们想方设法挤出一小时去健身房,是否就足以抵消这整天静坐不动对健康所造成的影响呢?第二段对该问题进行了回答:越来越多的证据表明不能。由此可知,体育锻炼并不能减轻久坐不动造成的不良影响,故答案为[D],同时排除[A]。文中提到人们下班后坐在家里的沙发上看电视,但并未提及人们在家坐着的时间过多或是看电视时间急剧增加,故排除[B]和[C]。
转载请注明原文地址:https://kaotiyun.com/show/TAf7777K
0
大学英语四级
相关试题推荐
Thecarcompanyis______(利用大从媒体)topopularizeitsnewmodelprogrammedtobemadeavailabletothepublicearlynextyear.
InWestVirginiaandinNewYork,oneoutoffourstudentsdropsoutofhighschool.InWashington,DC,the【S1】______areevenwo
A、Goonwiththegame.B、Drawpicturesonthecomputer.C、Reviewhislessons.D、Haveagoodrest.C女士说Mark在打电子游戏,男士则用了一个反问句“这是期
Theagriculturalrevolutioninthenineteenthcenturyinvolvedtwothings:theinventionoflaborsavingmachineryandthedevel
A、Sheforgottostopatthestore.B、Themanshouldn’teatthefish.C、Thefishissafetoeat.D、Thefoodshouldn’tbereheated
A、Hewastalkinginanewspaperadvertisement.B、Hewastalkingtoanewspapersalesman.C、Hewastalkingatanewspaperoffice.
WhowontheWorldCupfootballgame?WhathappenedattheUnitedNations?Howdidthecriticslikethenewplay?【C1】______aneve
ForacenturyandahalfthepianohasbeenoneofthemostpopularsoloinstrumentsforWesternmusic.Unlikestringandwindi
Mobilityofindividualmembersandfamilygroupstendstosplitupfamilyrelationships.Occasionallythemovementofafamilya
A、Atarestaurant.B、Atthewoman’sapartment.C、Atacanteen.D、Attheman’shouse.B
随机试题
Whilemanyworkersarewillingtolearnnewskillsorcompletelyretraintoimprovetheirfutureemployability,fewfeeltheyar
某心肌梗死患者,排出尿液为粉红色,经离心后上血清仍为红色,尿隐血试验阳性,镜下无红细胞,能溶于80%的饱和硫酸铵。该尿液最可能为
铺床时不符合节力原理的是
小儿无尿是指每昼夜尿量少于
当大体积混凝土平面尺寸过大时,可以适当设置(),以减小外应力和温度应力。
单项工程综合概算是以其所包含的()为基础汇总而成的。
商贸企业2013年10月进口机器一台,关税完税价格为200万元,假设进口关税税率为20%,支付困内运输企业的不含税运输费用0.2万元(取得运输企业开具的货物运输业增值税专用发票);本月售出,取得不含税销售额350万元.则本月应纳增值税额()万元。
甲承包商拟投标一项土建工程。招标人按照《建设工程工程量清单计价规范》(GB50500—2008)计算的该土建工程中的基础土方工程的清单工程量为1250m。。甲承包商按《全国统一建筑工程基础定额》和资源市场价格计算得出如下数据:(1)基础土方工程量为226
—Haveyoupaid?What’smyshareofthebill?—______.Itwasn’tverymuch.
Whatarethespeakerstryingtodo?
最新回复
(
0
)