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
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-
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-
admin
2016-01-05
102
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 deep in the brain known as the amygdala.
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, as 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 fact 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 and buying gas masks.
The "so-called fight-or-flight response"(Para. 1)refers to
选项
A、the biological process in which human beings’ sense of self-defense evolves.
B、the instinctive fear human beings feel when faced with potential danger.
C、the act of evaluating a dangerous situation and making a quick decision.
D、the elaborate mechanism in the human brain for retrieving information.
答案
B
解析
推断题。由题干定位到第一段。文章首句中,破折号前面的部分是对so-called fight-or-flightresponse的同义解释。B项中的the instinctive fear对应文章中的fear begins with the body’s system.feel when faced with对应reacting to,potential danger对应thing that can harm us。
转载请注明原文地址:https://kaotiyun.com/show/83sZ777K
0
考研英语一
相关试题推荐
Tenyearsago,Igotacallfromareporteratabig-citydailypaper."I’mwritingastoryoncommunicationskills,"shesaid.
Foodandoxygenpasseasilyfrommothertofetus(anunbornbaby).Nowitseemsthatfleetingsadnessorhappinessisalso【B1】___
Thatpeoplehavepersonalitiesgoeswithoutsaying.Petownerswillquicklyarguethattheiranimalshavepersonalitiestoo.Yet
Asmillionsoffamiliesplansummervisits,theworld’sfirst,oldest,largest,andmostenviedcollectionofnationalparksis
OneofthemostpressingchallengesthattheUnitedStates—andindeed,theworld—willfaceinthenextfewdecadesishowtoall
Itisnotsurprisingthataphilosophyborrowedfrombusinessshouldseeitsprincipalfocuswithineducationasthefurthering
ReadersofacertainagecanrememberatimewhenatriptoMcDonald’sseemedlikeatreatandwhenasmallbagofFrenchfries,
Peopletendtoamasspossessions.Indeedtheycanhaveadelightfulsurprisewhentheyfindsomethingusefulwhichtheydidnot
Illegalimmigration,whichhassparkedpoliticalandsocialdisorderincommunitiesacrossthenation,isonthewane,according
ADarwinianunderstandingofculturebeginswiththeobservationthattheartsappearineveryhumansocietyandyieldintensed
随机试题
现场防止直接接触触电的基本安全防范技术措施有隔离、屏护、间距等。()
用指掌或肢体其他部位按压或()挤压体表,称挤压类手法。
累及肺泡的肺气肿类型有
A.行政行为B.行政处分C.行政处罚D.行政复议E.行政责任公民、法人对处理决定不服,可以向上一级行政机关提出的是
可治疗齿痛、牙关不利、颊肿、口角歪斜等病证的腧穴是
下列整体式楼地面中,造价低、施工方便,但是不耐磨,易起砂、起灰的是()。
下列不属于影响期权价值因素的是()
“忠诚度”属于市场细分中的()细分变量?
蝴蝶、孔雀等一些动物的翅膀,能够将阳光散为多种单色光,产生绚丽色彩。受此启发,某通讯技术研发公司研制的电子阅读器能够在阳光下产生与蝴蝶翅膀一样的绚丽多彩,这种技术被称为干涉仪调节器显示技术,它彻底解决了传统显示屏一遇到强烈日光就“见光死”的问题。该公司研发
新时期大学教师只要多读书就能取得师德修养的良好效果。
最新回复
(
0
)