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
You are what you eat, or so the saying goes. But Richard Wrangham, of Harvard University, believes that this is true in a more p
You are what you eat, or so the saying goes. But Richard Wrangham, of Harvard University, believes that this is true in a more p
admin
2017-04-13
24
问题
You are what you eat, or so the saying goes. But Richard Wrangham, of Harvard University, believes that this is true in a more profound sense than the one implied by the old proverb. It is not just you who are what you eat, but the entire human species. And with Homo sapiens, what makes the species unique in Dr. Wrangham’s opinion is that its food is so often cooked.
Cooking is a human universal. No society is without it. No one other than a few faddists tries to survive on raw food alone. And the consumption of a cooked meal in the evening, usually in the company of family and friends, is normal in every known society. Moreover, without cooking, the human brain(which consumes 20-25% of the body’s energy)could not keep running. Dr. Wrangham thus believes that cooking and humanity have developed alongside. In fact, as he outlined to the American Association for the Advancement of Science(AAAS), in Chicago, he thinks that cooking and other forms of preparing food are humanity’s "killer application": the evolutionary change that underpins all of the other—and subsequent—changes that have made people such unusual animals.
Humans became human, as it were, with the emergence 1.8 million years ago of a species called Homo erectus. This had a skeleton much like modern man’s—a big, brain-filled skull and a narrow pelvis and rib cage, which imply a small abdomen and thus a small gut. Hitherto, the explanation for this shift from the smaller skulls and wider pelvises of man’s apelike ancestors has been a shift from a vegetable-based diet to a meat-based one. Meat has more calories than plant matter, the theory went. A smaller gut could therefore support a larger brain.
Dr. Wrangham disagrees. When you do the sums, he argues, raw meat is still insufficient to bridge the gap. He points out that even modern "raw foodists", members of a town-dwelling, back-to-nature social movement, struggle to maintain their weight—and they have access to animals and plants that have been bred for the table. Pre-agricultural man confined to raw food would have starved.
Start cooking, however, and things change radically. Cooking alters food in three important ways. It breaks starch molecules into more digestible fragments. It "denatures" protein molecules, so that their amino-acid chains unfold and digestive enzymes can attack them more easily. And heat physically softens food. That makes it easier to digest, so even though the stuff is no more calorific, the body uses fewer calories dealing with it.
It is stated that humans had changed from their apelike ancestors to Homo erectus probably because
选项
A、they could support a larger brain with smaller gut.
B、they had a narrow pelvis and rib cage.
C、they began to eat cooked meat and vegetables.
D、they took meat as the staple of diet.
答案
D
解析
事实细节题,考查因果细节。根据apelike ancestors定位到第三段第三句。句中指出人类从类猿祖先的小头骨和宽盆骨到如今体格的转变随着人们的饮食由蔬菜变为肉类而实现。故选D项。
转载请注明原文地址:https://kaotiyun.com/show/1mbZ777K
0
考研英语一
相关试题推荐
Itisjustoneexampleofthegrowingconcernovertheincreasingpowerconsumptionandenvironmentalimpactofcomputers.Astu
Boys’schoolsaretheperfectplacetoteachyoungmentoexpresstheiremotionsandinvolvetheminactivitiessuchasart,dan
Societyhasaspecialplaceinitspsychefortruelove—wethinkoftrueloveasunconditional,intimate,andeverlasting.Divor
Themade-for-TVmovieaboutatornadocarryingman-eatingsharkswasasurprisehitinAmerica.ThepreposterousplotofSharkna
Themade-for-TVmovieaboutatornadocarryingman-eatingsharkswasasurprisehitinAmerica.ThepreposterousplotofSharkna
Oneofthereallystartlingthingsabouttoday’sdecisionontheAffordableCareActisthatthewholebroccoliissue.Onemight
Thereweresomeconsistentpatternsamongtheheavierreaders:Fortheyoungerchildren—ages6to11—beingreadaloudtoregula
WhilewesterngovernmentsworryoverthethreatofEbola,amorepervasivebutfarlessharmful【C1】______isspreadingthroughth
Insomniacs(someonewhocannotsleepeasily)don’tjustsufferatnight.Duringtheday,theyoftenfeelsleepy,havetroubleco
Awomanwithatwinbrotherhasfewerchildren.Twinbrotherscanleavequiteanimpression.Themerepresenceofaboyinthes
随机试题
组织协调国家反洗钱工作,指导、部署金融业反洗钱工作的是()。
某一年产量为50万吨乙烯的石油冶炼项目通过公开招标的方式最终确定天翔工程总承包公司负责完成该项目的设计、采购和施工等任务,本项目所采用的工程项目承包模式在国际上通常被称作()。
以下关于冠状动脉粥样硬化的易患因素不包括
大体积混凝土采用斜面分层方案浇筑时,混凝土一次浇筑到顶,混凝土振捣工作从浇筑层()。
某工地塔吊未按安全生产规定进行按时检查加固。为了赶进度,管理者明知存在安全隐患,仍继续要求施工,结果在施工过程中倒塌,造成重大伤亡。对此应负刑事责任的有()。
甲公司有A原材料账面价120万元/套,专门用于生产产品Y,该原材料市场销售价格为90万元/套,每套原材料加工成Y产品将要发生成本150万元,每件Y产品估计的销售税费为10万元,产品售价260元/套,请问期末该原材料要计提跌价准备()万元。
除全体股东约定不按出资比例分取红利外,有限责任公司有权按照()分取红利。
明成祖姓名朱棣,其子明仁宗姓名朱高炽,仁宗之子明宣宗姓名朱瞻基,宣宗之子明英宗姓名朱祁镇。这几位皇帝的名字体现了明朝皇室命名的思想是()。
解方程|x|x-4|x|+3=0.
设窗体上有2个文本框Text1和Text2,并有下面的事件过程:DimnPrivateSubText1_KeyPress(KeyAsciiAsInteger) If"A"
最新回复
(
0
)