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
73
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://kaotiyun.com/show/sBg7777K
0
大学英语四级
相关试题推荐
IntheUnitedStates,campaigns【S1】______everyelectionandoftenbeginmanymonthsorevenyearsbeforetheelection.Tolaunch
Thankstothegreatachievementsmadeinthedevelopmentofscienceandtechnology,humanlifehasexperiencedamazingchangesi
Fortunatelycampussafety______(引起了公众和媒体的高度重视)sincelastyear’stragedy.
Mycousinlikeseatingverymuch,butheisn’tvery______aboutthefoodheeats.
Theticket___________(让你免费享用一餐)inournewrestaurant.
Sometwentyyearsago,theperformanceofgirlsandboysinclasswascompared.Boysscoredbetterinexams,sovariousmeasures
AlthoughBeethovencouldsitdownandmakeupmusiceasily,hisreallygreatcompositionsdidnotcomeeasilyatall.Theycost
AcademyAwardsEveryFebruaryOscarFeverhitstheentertainmentcommunityandfilmfansaroundtheworld.Hundredsofmilli
A、Humanbrainsdifferconsiderably.B、Thebrainapersonisbornwithisimportantindetermininghisintelligence.C、Anenviron
随机试题
在Excel2010中建立图表后,用户还可以对它进行修改,可以修改图表的大小、类型,但是不能修改数据系列。()
根据H1受体拮抗剂构效关系
预防鱼类引起组胺中毒的主要措施为
患儿,女,3个月。口腔、舌面满布白屑,面赤唇红,烦躁不宁,吮乳啼哭,大便干结,小便短黄。治疗应首选制霉菌素加
给水排水压力管道做水压试验前,除接口外,管道两侧及管顶以上回填高度不应小于();水压试验合格后,应及时回填其余部分。
作为盾构始发与到达安全控制要点之一,拆除洞口临时围护结构前,必须确认(),以确保拆除后洞口土体稳定。
位于市区的某生产企业为增值税一般纳税人,经营内销与出口业务。2013年4月份实际缴纳增值税40万元,出口货物免抵税额5万元。另外,进口货物缴纳增值税17万元、消费税30万元。该企业4月份应缴纳的城市维护建设税是()万元。
DUN—16属于()。
=___________。
有三个关系R,S和T如下图所示:则由关系R和S得到关系T的运算是
最新回复
(
0
)