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
2017-12-11
55
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-flight response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/1nBZ777K
0
考研英语一
相关试题推荐
Childrenneedexercise.Parentsoftenworrythat【C1】______timeforathleticsorevenforjustplayingontheJungleJimis
Consumerproductssuchasshampoosandsunscreens,evenonesboostedassafer,maycontainpotentiallyharmfulchemicalsnotlis
Itistheurbandriver’smostagonizingeverydayexperience:thesearchforanemptyparkingplace.Circling,narrowlymissinga
Universitiesareinaseeminglyself-contradictoryposition.AsStefanCollinipointsoutinhisbook,theseancient【C1】______ha
Peekthroughtheinspectionwindowsofthenearly100three-dimensional(3D)printersquietlymakingthingsatRedEye,acompany
Peekthroughtheinspectionwindowsofthenearly100three-dimensional(3D)printersquietlymakingthingsatRedEye,acompany
ExtracurricularActivitiesandtheTimeSpentonThemA.Studythefollowingchartscarefullyandwriteanessayof160-200
RecruitingNewMembersWriteanadofabout100wordsbasedonthefollowingsituation:TheMartialArtAssociationiny
Supposeoneofyourclosefriends,Mr.Zhang,hasbeenhospitalizedforoneweek.Writealetterofconsolationtohim.Yourwri
Technologyissupposedtomakeourliveseasier,allowingustodothingsmorequicklyandefficiently.Buttoooftenitseemst
随机试题
患者,男,55岁。肠切除术后5天,排便时突感胸痛,继而出现呼吸困难。心率120次/分,血气分析示PaO260mmHg,PaCO230mmHg。超声心动图示右室内径增大,三尖瓣中度反流。最可能的诊断是
(2012年第29题)可以作为合成前列腺素原料的物质是
肿物考虑是哪种疾病术后症状如何解释
下列各项中,符合我国《个人所得税法》规定的有()。
下列各项中,属于政府预算会计要素的是()。
下列不是宪法的特征的是()。
党群关系,关乎党和国家的存亡大计。为了实现党的十八大确定的奋斗目标,中共中央部署并在全党开展了党的群众路线教育实践活动。这次活动的主要内容是
设A=,则A*的值.
TipsforApplyingtoU.S.CollegesI.GeorgeMasonUniversity-Thelargest【T1】________universityinVirginia
Forthispart,youareallowed30minutestowriteashortessayentitledShouldYoungPeopleBeObedienttoTheirParents?foll
最新回复
(
0
)