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
A、They are self-evident. B、They are yet to be proved. C、They are to be further studied. D、They are supported by scientific evide
A、They are self-evident. B、They are yet to be proved. C、They are to be further studied. D、They are supported by scientific evide
admin
2009-04-23
33
问题
America is a country on the move. In unheard of numbers, people of all ages are exercising their way to better health. According to the latest figures, 59 percent of American adults exercise regularly, up 12 percent from just two years ago and more than double the figure of 25 years ago. Even non-exercisers believe they would be more attractive and confident if they were more active.
It is hard not to get the message. The virtues of physical fitness are shown on magazine covers, postage stamps, and television ads for everything from beauty soaps to travel books. Exercise as a part of daily life did not catch on until the late 1960s when research by military doctors began to show the health benefits of doing regular physical exercise. Growing publicity for races held in American cities helped fuel a strong interest in the ancient sport of running.
Although running has leveled off in recent years as Americans have discovered equally rewarding and sometimes safer forms of exercise, such as walking and swimming, running remains the most popular form of exercise.
As the popularity of exercise continues to mount, so does scientific evidence of its health benefits. The key to fitness is exercising the major muscle groups vigorously enough to approximately double the heart rate and keep it doubled for 20 to 30 minutes at a time. Doing such physical exercises three times or more a week will produce considerable improvements in physical health in about three months.
选项
A、They are self-evident.
B、They are yet to be proved.
C、They are to be further studied.
D、They are supported by scientific evidence.
答案
D
解析
What call be learnt about the health benefits of exercise from the passage?
转载请注明原文地址:https://kaotiyun.com/show/6pR7777K
0
大学英语四级
相关试题推荐
下列关于熊市套利的说法中,正确的有()。
CBOT5年期美国中期国债期货合约的最后交割日是()。
A、Trytoavoidthegreatpressure.B、Makefriendswiththesamevalue.C、Forgiveyourselfandkeephappy.D、Dothethingsyouwa
Waffles?Frenchtoast?Bacon?Bigbreakfastsmaybeathingofthepast.AccordingtotheAssociatedPress,moreAmericansarec
Children’sHealthcareofAtlantawantstomoveGeorgiaoutofthetop10listforchildhoodobesity(肥胖),officialssaid.
A、HewantsothercountriestounderstandtheU.S.B、Hecallsonsomebigcompaniestocareaboutclimate.C、Hecallsonpeoplei
A、Thedeclineoftheeconomy.B、Theuncertaintyofthejob.C、Thefurtherinvestment.D、Thedifferenceinlifestyles.B
A、ItisclosingdownsomefactoriesintheUS.B、Itnolongeroffershigh-payingjobs.C、Thenumberofitsemployeesisdoubled
A、Collectashtreeseedsforexperiment.B、Preservethehealthyashtreeseeds.C、Setupanewseedbankforresearch.D、Develop
A、It’sdifficulttofindtherightwoodenmaterials.B、It’squiteeasytomakeasmallorgan.C、Ittakesalongertimetotesta
随机试题
正式群体
病灶侧单眼失明病灶对侧下肢中枢性瘫
下列哪个临床症状最符合腺样囊性癌
城市道路排水形式有()。
某铁路在铁路网中起联络作用,远期年客货运量在1800万t左右,该铁路线路为()。
不考虑其他因素,下列关于合营安排的表述中,正确的有()。
心理学家( )创造了精神分析理论,这一理论对社会工作产生了深远影响。
《漂泊的荷兰人》是()的歌剧代表作。
所谓棘轮效应,又称制轮作用,是指人的消费习惯形成之后有不可逆性,即易于向上调整,而难于向下调整。尤其是在短期内消费是不可逆的,其习惯效应较大。根据上述定义,下列最能体现棘轮效应的是()。
______thepurchaseofthreeinexpensivedigitalcameras,nonewequipmentordersweremadebyourdepartmentduringthelastfin
最新回复
(
0
)