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
2018-01-08
75
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 modem 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 modem "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.
Dr. Wrangham quotes the example of "raw foodists" to show that______.
选项
A、raw meat is not enough to narrow the gap
B、raw foodists also consume meat and vegetables
C、raw meat is harmful to modem "raw foodists"
D、raw foodists face problems to maintain weight
答案
A
解析
此题为细节分析题。根据题干定位答案至第四段。该段前二句指出,Dr.Wrangham提出,总的来说,没煮过的肉不足以弥补两者的差距。接着他举例“生食主义者(raw foodists)也得竭力保持体重”来说明的他的观点。因此,A选项为正确答案。
转载请注明原文地址:https://kaotiyun.com/show/cTBZ777K
0
考研英语一
相关试题推荐
LastSeptember,theU.S.governmentannouncedthatitsbirthratefellto"anotherrecordlow".Morallyspeaking,there’snothing
AftervisitingWidenerUniversityandlearningaboutitsprogramrequiring300hoursofcommunityserviceinthesurroundingpoo
AftervisitingWidenerUniversityandlearningaboutitsprogramrequiring300hoursofcommunityserviceinthesurroundingpoo
AftervisitingWidenerUniversityandlearningaboutitsprogramrequiring300hoursofcommunityserviceinthesurroundingpoo
AftervisitingWidenerUniversityandlearningaboutitsprogramrequiring300hoursofcommunityserviceinthesurroundingpoo
AftervisitingWidenerUniversityandlearningaboutitsprogramrequiring300hoursofcommunityserviceinthesurroundingpoo
Despitehelpingtorecordevents,photoscoulddamageourmemories.Researchersfoundpeoplewhotakepictureshave【C1】______rem
Despitehelpingtorecordevents,photoscoulddamageourmemories.Researchersfoundpeoplewhotakepictureshave【C1】______rem
Judgingfromrecentsurveys,mostexpertsinsleepbehavioragreethatthereisvirtuallyanepidemicofsleepinessinthenatio
Withincreasingprosperity,WesternEuropeanyouthishavingaflingthatiscreatingdistinctiveconsumerandculturalpatterns
随机试题
简述仲裁答辩书的概念和功用。
急性心包炎的胸痛特点是
关于骨肉瘤一般概述错误的是( )
期货合约与现货合同和现货远期合约最本质的区别是()。
体育教学中,为突出教学的重点和难点,纠正错误动作时,可采用()。
【2012年枣庄市市中区】教师让学生“即兴回答问题”,这是调动学生的()。
犯罪客体与犯罪对象的区别是()。
能够影响法的遵守主体遵守法律的因素有()。
在关系数据库设计中,设计关系模式是数据库设计中哪个阶段的任务______。A)逻辑设计阶段B)概念设计阶段C)物理设计阶段D)需求分析阶段
Globalizationhasspurredonthistrendthroughtheubiquitousinternettorealizewirelessconnections,affordabledevicestoc
最新回复
(
0
)