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
As a volunteer, John Apollos is losing weight—the old-fashioned way—by eating less. Apollos has lowered his daily caloric intake
As a volunteer, John Apollos is losing weight—the old-fashioned way—by eating less. Apollos has lowered his daily caloric intake
admin
2013-05-19
56
问题
As a volunteer, John Apollos is losing weight—the old-fashioned way—by eating less. Apollos has lowered his daily caloric intake 25% over the past eight months. The fat, not surprisingly, has melted away. But that’s not the real reason Apollos and the other participants in the program are eating only three-quarters of what they used to. The researchers are trying to determine whether restricting food intake can slow the aging process and extend our life span. "I feel better and lighter and healthier," says Apollos. "But if it could help you live longer, that would be pretty amazing."
The idea is counterintuitive: If we eat to live, how can starving ourselves add years to our lives? Yet decades of calorie-restriction studies involving organisms ranging from microscopic yeast to rats have shown just that. Last July a long-term study led by researchers at the University of Wisconsin, found that calorie restriction seemed to extend the lives of humanlike rhesus monkeys (恒河猴) as well. The hungry primates fell victim to diabetes, heart and brain disease and cancer much less frequently than their well-fed counterparts did.
Scientists have suspected that calorie restriction could extend the life span of animals since at least 1935, when researchers at Cornell University noticed that severely food-restricted lab rats lived twice as long as normal ones and were healthier. Other investigators began exploring the idea and learned that the secret is not merely a matter of body weight.
One theory is that a state of slight hunger acts as a mild but constant stressor that makes an organism stronger and more resistant to the ills of aging. Taking in fewer calories also slows metabolism (新陈代谢), and some data indicate that humans with a slower metabolism live longer. But even if these theories are correct, simply defining the mechanism is not the same as identifying the molecular pathways behind it. If researchers could determine those pathways, they might be able to pharmacologically mimic (模仿) the effect of calorie restriction. That could be the ultimate benefit of the CALORIE study. "Calorie restriction is pretty much the only thing out there that we know will not just prevent disease but also extend maximal life span," says Dr. Marc Hellerstein, a nutritionist at the University of California.
From Dr. Marc Hellerstein’s words, we can infer that______.
选项
A、people who are thin can survive longer than those who aren’t
B、effective calorie restriction makes us live healthier and longer
C、keeping diet cannot help people keep fit or live long
D、a state of hunger is beneficial for our health
答案
B
解析
推理判断题。由定位句可知,既能防止疾病又能延年益寿的方法就是控制热量摄入。故B)“有效的热量控制可以让我们活得更健康、更长久”符合题意。
转载请注明原文地址:https://jikaoti.com/ti/ZX2FFFFM
0
大学英语四级
相关试题推荐
E1Ninoisthenamegiventothemysteriousandoftenunpredictablechangeintheclimateoftheworld.Thisstrange【S1】______ha
A、There’snotenoughfinancialaidavailable.B、Agoodeducationisofgreatimportance.C、Morestudentsworryabouttheirschoo
Itwasamomentmostbusinessexecutiveswouldpausetosavor:latelastyear,GermansportinggoodspioneerAdidaslearnedthat
Ataroundageoffive,everychildhastomakethe【C1】______fromhometoschool.Childrenatthisagehaveanenormousamountto
A、Callhisfriend.B、Gototheofficetogethistest.C、Sendthewomanaletter.D、Takethetestlater.A一般来讲,此类题目,几个选项都具有很强的迷惑
A、Youreyesight.B、Yourdrivingability.C、Yourcar’smechanicalcondition.D、Yourknowledgeoftrafficregulations.D事实细节题。从"T
Money,especiallysugarmoney,【B1】______theforceforannexation(合并,吞并)ofHawaii.Americansugar【B2】______hadaplacetos
Thequalityofpatiencegoesalongwaytowardyourgoalofcreatingamorepeacefulandlovingself.Themorepatientyouare,
A、Theyusuallydon’tfollowfamilyrules.B、Theydon’tliketotakechancesintheirlives.C、Theyarelesslikelytobesuccess
Spaceisfilledwithradiantenergyandbeyondearth’satmospherethisenergyflowsteadilyandintenselyfromthesun.Anabund
随机试题
Beijingiswell______itsbeautifulsceneryandtheGreatWall.
患者,女,49岁。因消化道疾病需做隐血试验,试验期间可食用()。
A.McBurney点压痛B.Murphy征阳性C.上腹中部压痛D.脐周压痛E.下腹正中压痛急性胆囊炎
某中学生因车祸受伤,在昏迷中被送往医院。手术后醒来时,发现自己的左下肢被切除,开始时愤怒异常,大喊大叫,后来不吃不喝,也从不与任何人说话。这种情况属于患者角色转化中的
下列哪项不是脾的生理功能()
患者于地震后突发精神行为异常(地震灾难中患者家属全部遇难),常伴灾难场景重现,应首先考虑
农村村民出卖、出租住房后,再申请宅基地的,应如何处理?
混凝土达到规定强度后,采用先张法施工的预应力混凝土构件中的钢筋端部应( )。
Thenaughtyboyquickly______underthefenceandgotintothefestivalwithoutpaying.
鸦片战争以后,中国逐步成为半殖民地半封建社会,列强对中国的侵略步步紧逼,为改变中华民族的命运,中国人民和无数仁人志士进行了千辛万苦的探索和不屈不挠的斗争。太平天国运动,戊戌变法,义和团运动,不甘屈服的中国人民一次次抗争,但又一次次失败。孙中山先生领导的辛亥
最新回复
(
0
)