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
考研
After decades of worsening diets and sharp increases in obesity, Americans’ eating habits have begun changing for the better. Ca
After decades of worsening diets and sharp increases in obesity, Americans’ eating habits have begun changing for the better. Ca
admin
2017-01-12
46
问题
After decades of worsening diets and sharp increases in obesity, Americans’ eating habits have begun changing for the better. Calories consumed daily by the typical American adult, which peaked around 2003, are in the midst of their first sustained decline since federal statistics began to track the subject, more than 40 years ago.
The declines cut across most major demographic groups—including higher- and lower-income families, and blacks and whites—though they vary somewhat by group. In the most striking shift, the amount of full-calorie soda drunk by the average American has dropped 25 percent since the late 1990s. As calorie consumption has declined, obesity rates appear to have stopped rising for adults and school-aged children and have come down for the youngest children, suggesting the calorie reductions are making a difference.
The reversal appears to stem from people’s growing realization that they were harming their health by eating and drinking too much. The awareness began to build in the late 1990s, thanks to a burst of scientific research about the costs of obesity, and to public health campaigns in recent years.
The encouraging data does not mean an end to the obesity epidemic: More than a third of American adults are still considered obese, putting them at increased risk of diabetes, heart disease and cancer. Americans are still eating far too few fruits and vegetables and far too much junk food, even if they are eating somewhat less of it, experts say.
But the changes in eating habits suggest that what once seemed an inexorable decline in health may finally be changing course. Since the mid-1970s, when American eating habits began to rapidly change, calorie consumption had been on a near-steady incline. Barry Popkin, a University of North Carolina professor who has studied food data extensively, described the development as a "turning point". There is no perfect way to measure American calorie consumption. But three large sources of data about diet all point in the same direction. Detailed daily food diaries tracked by government researchers, data from food bar codes and estimates of food production all show reductions in the calories consumed by the average American since the early 2000s. Those signals, along with the flattening of the national obesity rate, have convinced many public health researchers that the changes are meaningful.
The reversal appeared among Americans because______.
选项
A、the growth of American population
B、the realization of the harmfulness brought by bad eating habits
C、the large amount of scientific research
D、the public health campaigns in recent years
答案
B
解析
细节题。根据题干关键词The reversal定位至第三段第一句:The reversal appears to stem from people’s growing realization that they were harming their health by eating and drinking too much.此句意为“这个反转趋势显然是因为人们开始惊觉到放纵饮食对身体的危害。”由此可知,B项“意识到不良饮食习惯带来的坏处”符合题意,为正确答案。A项“美国人口的增长”无中生有。C项“大量的科学研究”和D项“近年的公共健康运动”是促使人们意识到不良饮食习惯带来的坏处的原因,而不是题干问题的原因,故排除。
转载请注明原文地址:https://kaotiyun.com/show/jIEZ777K
0
考研英语一
相关试题推荐
Neuroscientistshavelongunderstoodthatthebraincanrewireitselfinresponsetoexperience—aphenomenonknownasneuroplast
Inthedaysbeforepreschoolacademieswereallbutmandatoryforkidsunder5,IstayedhomeandgotmyearlyeducationfromMi
WithJapan’swelfaresystembucklingunderthedemandsofanageingsociety,theworld’soldestmanapologizedyesterdayforhis
Familiarasitmayseem,gravityremainsamysterytomodernphysics.Despiteseveraldecadesoftrying,scientistshavefailed
Humanity’sgreatestaccomplishmentofthepastfivedecades,declaredBillGatesthisweek,isthereductioninthenumberofde
Niceguysknewit,nowtwostudieshaveconfirmedit:badboysgetthemostgirls.Thefindingmayhelpexplainwhyanastysuit
Writeanessaybasedonthecharts.Inyourwriting,youshould1)interpretthecharts,and2)giveyourcomments.
SupposetheregularmeetingoftheStudentUnionthisFridayispostponedtonextMonday.Writeanoticetoallmembersto1
About3billionpeoplelivewithin100miles(160km)ofthesea,anumberthatcoulddoubleinthenextdecadeashumansflockt
Brandsarebasicallyapromise.Theytellconsumerswhatqualitytoexpectfroma【C1】______andshowoffitspersonality.Firmsi
随机试题
企业采用许可证贸易、技术转让、劳务合作等方式进入国际市场的模式属于()
有关抗菌后效应(PAE)的叙述中,错误的是()
按照设计合同示范文本有关违约责任规定,下列描述中不正确的是( )。
按照成本控制的不同标准划分为()。
以下关于碾压时拌合料干湿度控制的错误说法是( )。
由于预期人民币持续升值,大量外国货币涌入我国,这种资本流动属于()。[2007年5月二级、三级真题]
某企业生产的机械加工车床销售单价为1600元/台,单位产品变动成本为1300元/台,固定成本分摊为6万元,计算得出的保本销售量为200台,假设预测计划期的销售量仅有180台。根据上述材料,回答以下问题。若预测计划期的销售量不变,该企业就会亏
下列各项中,属于系统风险的是()。
在快速排序法中,每经过一次数据交换(或移动)后
Theopiumpoppyisabrightflower,usuallyredororange,thatgrowstoa【C1】h______ofabout75-90centimetres.Inthewild,i
最新回复
(
0
)