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
104
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
TheHumanBrainThebrainisthemostcomplexorganinhumanbody.Itproducesoureverythought,action,memory,feelingan
Thankstothegreatachievementsmadeinthedevelopmentofscienceandtechnology,humanlifehasexperiencedamazingchangesi
LandfilisYouhavejustfinishedyourmealatafastfoodrestaurantandyouthrowyouruneatenfood,foodwrappers,drinkc
LandfilisYouhavejustfinishedyourmealatafastfoodrestaurantandyouthrowyouruneatenfood,foodwrappers,drinkc
Itwasamomentmostbusinessexecutiveswouldpausetosavor:latelastyear,GermansportinggoodspioneerAdidaslearnedthat
ManandNatureThebalanceofnatureisadelicatesystemofchecksandcounter-checks.Naturehasitsownwayofchecking
A、Sheseldomcomestotherestaurant.B、Shevisitsacoupleintherestaurant.C、Shedoesn’tcometotherestaurantregularly.D
Justasyoucanbeslimandinactive,it’spossibletobeoverweightandactive.Butwhichisbetterforyourhealth?Twomo
An"applepolisher"isonewhogivesgiftstowinfriendshiporspecialtreatment.Itisnotexactlyabribe(贿赂),butisclose
随机试题
什么是测量仪表的稳定性?
她看着自己的一窝女儿,一个赛一个的标致标致:
It’snecessary________thedictionaryimmediately.
内生肌酐清除率的参考值
下列哪项不符合单发骨软骨瘤的临床表现
原人参二醇是()。
在新建社区中,社区工作者可以通过()了解社区居民对社区的看法和需要。
设二叉排序树中关键字由1~1000的整数构成,现要查找关键字为363的结点,下列关键字序列不可能是在二叉排序树上查找到的序列是()。
(中山大学2013)某银行的资产负债表如下,其中,BL、M1分别是2.5年和30年期、按月偿还的商业抵押贷款CDl是1年期一次性偿付的存单,CD5是5年期一次性偿付的存单,D是存续期。紧接第二小题,假定在本轮金融危机冲击下,该银行两类贷款均因违约率上
Inasense,thenewprotectionismisnotprotectionismatall,atleastnotinthe【C1】______senseoftheterm.Theoldprotectio
最新回复
(
0
)