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
33
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
Consumerproductssuchasshampoosandsunscreens,evenonesboostedassafer,maycontainpotentiallyharmfulchemicalsnotlis
Airpollutionkilledaboutsevenmillionpeoplelastyear,makingittheworld’ssinglebiggestenvironmentalhealthrisk,theW
Bettingagainstanindustrywithaddictsforcustomerscarriesobviousrisks.【C1】______theseareuncertaintimesforBigTobacco
Bettingagainstanindustrywithaddictsforcustomerscarriesobviousrisks.【C1】______theseareuncertaintimesforBigTobacco
Itistheurbandriver’smostagonizingeverydayexperience:thesearchforanemptyparkingplace.Circling,narrowlymissinga
IsStanfordstillauniversity?TheWallStreetJournalrecentlyreportedthatmorethanadozenstudentshaveleftschooltowo
Aprettypotplantmightmakeanunemotionalworkspacefeelmorepersonal.Butnewresearchhasrevealedthatofficeplantsdo
Fordecadesthemarketforexpensiveheadphoneswasmainlylimitedtohi-fifans.But【C1】______theboxystereosysteminthecor
WhatdoRussia’sBelgorodprovinceandsomeschoolsinFloridaandConnecticuthaveincommon?Theyareunlikelyrecruitstothe
TobaccoConsumptionWriteanessayof160-200wordsbasedonthesetofpictures.Inyouressay,youshould1)interpret
随机试题
下列属于招标人以不合理条件限制、排斥潜在投标人的行为的有()。
下列说法中错误的是()。
医疗卫生机构发生医疗废物流失、泄漏、扩散和意外事故时,应当在()内向所在地的县级人民政府卫生行政主管部门、环境保护行政主管部门报告
行政法律关系一般是指受法律规范调整的因行政权的形式而产生的一类法律关系。行政法律关系不仅具有法律关系的一般特征,还有其自身特点。下面关于行政法律关系自身特点的表述中错误的是()。
应急电源与工作电源之间不应采取可靠措施防止并列运行。()
下列各项中,适用增值税出口退税“先征后退”办法的是()。
Bynineo’clock,alltheOlympictorchbearershadreachedthetopofMountQomolangma,_________appearedararerainbowsoon.
婴儿动作发展遵循的原则包括( )。
()是指幼儿园心理环境的创设要符合幼儿的年龄特征及身心健康发展的需要,促进每名幼儿全面、和谐地发展。
下列海洋植物中,属于红藻类的是:
最新回复
(
0
)