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
67
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
Doctorshavelongknownthatlungcancer,whichkills160,000Americanseachyear,takesaheaviertollamongblackAmericans,
Archaeologyasaprofessionfacestwomajorproblems.First.itisthepoorestofthepoor.Onlypaltrysumsareavailableforex
Theidealcompanionmachine—thecomputer—wouldnotonlylook,feel,andsoundfriendlybutwouldalsobeprogrammedtobehavein
Therearealotofchoicesyouhavetomakeinyourlifeandsomeeventsorchangesthathaveoccurredbecauseofthem.Inthef
Peoplewhousetheirdesk-topcomputersforwritingcanbecomealmosthypnotizedbytheunbrokensuccessionoflettersandtext;
Thereareprobablyveryfewcasesinwhichdifferentraceshavelivedincompleteinasinglecountryforlongperiods.
Weliveinamaterialisticsocietyandaretrainedfromourearliestyearstobeacquisitive.Whenwegrowoldenoughtoearna
TheireffortsatbringingAliceandGracetogether______.
ThemostfamouspainterinVictoria’shistoryisEmilyCarr.Whenshewasachild,shediscoveredthatwalkinginthewoods【1】mo
A、countB、reflectC、dependD、commentBcount意为“考虑”,但常用于count…as…的结构中;reflect意为“思考,回顾”;depend意为“依靠,信任”;comment意为“评论,发表意见”。联系上下旬可知,
随机试题
关于承兑,下列各项描述不正确的是哪一项?()
景观设计主要是场地的平面构成创作。()
______,直挂云帆济沧海。(唐.李白《行路难》)
某交通局局长胡某,因涉嫌贪污、受贿、挪用公款等多项罪名而被人民检察院立案侦查并羁押。在侦查期间,胡某聘请了律师刘某为其提供法律帮助。在本案中,有权为胡某申请取保候审的人员有:()
钻孔灌注桩施工所用泥浆配合比应根据()设计。
机关公务员退休年龄是()。
7月1日,甲工厂向乙公司购买一批水果,双方签订了买卖合同,约定7月10日在乙公司的货场验货付款。甲工厂没有按约定的日期来提货。7月12日,天降大雨,乙公司没有对露天放置的水果采取任何遮盖措施。7月15日甲工厂派人来提货时,该批水果已经大批腐烂。如果双方解除
申请物业管理师执业资格注册,必须具备的条件有()。
Whatistheman’sproblem?
Describeastreetyoulike.Youshouldsay:wherethestreetiswhatarethereonthestreetwhatpeopleusuallydothereandex
最新回复
(
0
)