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
In a purely biological sense, fear begins with the body’s system for reacting to things that can harm us-- the so-called fight-o
In a purely biological sense, fear begins with the body’s system for reacting to things that can harm us-- the so-called fight-o
admin
2012-10-23
66
问题
In a purely biological sense, fear begins with the body’s system for reacting to things that can harm us-- the so-called fight-or-flight response. "An animal that can’t detect danger can’t stay alive. "says Joseph LeDoux. Like animals, humans evolved with an elaborate mechanism for processing information about potential threats. At its core is a cluster of neurons (神经元)deep in the brain known as the amygdala(扁桃棱).
LeDoux studies the way animals and humans respond to threats to understand how we form memories of significant events in our lives. The amygdala receives input from many parts of the brain, including regions responsible for retrieving memories. Using this information, the amygdala appraises a situation I think this charging dog wants to bite me--and triggers a response by radiating nerve signals throughout the body. These signals produce the familiar signs of distress: trembling, perspiration and fast--moving feet, just to name three.
This fear mechanism is critical to the survival of all animals, but no one can say for sure whether beasts other than humans know they’re afraid. That is all LeDoux says," if you put that system into a brain that has consciousness, then you get the feeling of fear."
Humans, says Edward M. Hallowell, have the ability to call up images of bad things that happened in the past and to anticipate future events. Combine these higher thought processes with our hardwired danger-detection systems, and you get a near-universal human phenomenon: worry. That’s not necessarily a bad thing, says Hallowell. "When used properly, worry is an incredible device. "he says. After all, a little healthy worrying is okay if it leads to constructive action--like having a doctor look at that weird spot on your back.
Hallowell insists, though, that there’s a right way to worry. "Never do it alone, get the facts and then make a plan." he says. Most of us have survived a recession, so we’re familiar with the belt-tightening strategies needed to survive a slump.
Unfortunately, few of us have much experience dealing with the threat of terrorism, so it’s been difficult to get facts about how we should respond. That’s why Hallowell believes it was okay for people to indulge some extreme worries last fall by asking doctors for Cipro(抗炭疽茵的药物)and buying gas masks.
From the studies conducted by LeDoux we learn that ______
选项
A、reactions of humans and animals to dangerous situations are often unpredictable
B、memories of significant events enable people to control fear and distress
C、people’s unpleasant memories are derived from their feelings of fear
D、the amygdala plays a vital part in human and animal responses to potential danger
答案
D
解析
本题考查细节,问“LeDoux研究表明了什么”。短文第二段分析了LeDoux的研究,指出了扁桃核在回应潜在危险时的功能:“The amygdala receives input from many parts of the brain,…appraises a situation…” (扁桃核接受从大脑很多部位发出的信息,并对情况做出评估)。在第三段又指出“…This fear mechanism is critical to the survival of all animals,…”即这种恐惧的机制对所有动物的生存起关键作用,此处的恐惧机制指的就是第二段提到的扁桃核的功能。因此,LeDoux的研究说明了“扁桃核在人和动物对潜在危险的反应中起着关键作用”,故选D。
转载请注明原文地址:https://www.kaotiyun.com/show/jQ9O777K
0
考博英语
相关试题推荐
IhaveobservedthattheAmericansshowalessdecidedtasteforgeneralideasthantheFrench.Thisisespeciallytrueinpolit
Beforethemid-nineteenthcentury,peopleintheUnitedStatesatemostfoodsonlyinseason.Drying,smoking,andsaltingcould
ItisreportedthatthelatestoutbreakofthebirdfluinPennsylvaniaintheUnitedStateshaspromptedChinatoslapabanon
Hegradually______thatherparentshadbeenrightandhisdecisionhadtobemodified.
IntheUnitedStates,36statescurrentlyallowcapitalpunishmentforseriouscrimessuchasmurder.Americanshavealwaysargu
Insciencethemeaningoftheword"explain"sufferswithcivilization’severystepinsearchofreality.Sciencecannotreally
TheUnitedNationLawoftheSeaConferencewouldsoonproduceanocean-miningtreatyfollowingits______declarationin1970tha
Aknowledgeofhistory______ustodealwiththevastrangeofproblemsconfrontingthecontemporaryworld.
PresidentBushwarnedCongressonWednesdaythatinactiononhispushto______SocialSecuritycouldbreedpoliticalrepercussion
Themonopoly-capitalistgroup______manysmallerenterpriseslastyear.
随机试题
强制保险,也称为()
法院对于诉讼中有关情况的处理,下列哪些做法是正确的?()(司考.2009.3.85)
桥梁勘察的部分成果参见下表,根据勘察结果,按《公路工程抗震设计规范》(JTJ004—89)进行结构的抗震计算时,地表以下20m深度内各土层的平均剪切模量Gm的计算结果最接近()选项。(重力加速度g=9.81m/s2)
案例 2004年4月30日,乌海市某煤矿发生一起特大透水事故,造成13人死亡、2人失踪,直接经济损失287.5万元。 该矿井田面积为0.144km2,煤种为肥焦煤,矿井主采煤层是16号煤层,可采储量为105.66×104t,煤层均匀厚度为8m,倾角为9
如果基金募集期限届满后不能成立,基金管理人要在基金募集期限届满后()日内返还投资者已缴纳的款项,并加计银行同期存款利息。
王老师在向学生讲“雪花”这一事物时,采用让学生观看录像带和向空中抛洒的大量碎纸片的方式引导学生体会下雪的情景。这种直观的手段是()。
公文应在()装订。
设每次试验成功的概率为0.2,失败的概率为0.8,设独立重复试验直到成功为止的试验次数为X,则E(X)=__________.
软件测试是软件开发过程中重要和不可缺少的阶段,其包含的内容和步骤甚多,而测试过程的多种环节中基础的是()。
—Lookatthefrombelow.—Youwillhearaninterview.TheIntervieweesInformationName:NorcrossMajor:【1】____
最新回复
(
0
)