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
Researchers led by New York University neuroscientist Joseph LeDoux recently claimed to be the first scientists to erase a singl
Researchers led by New York University neuroscientist Joseph LeDoux recently claimed to be the first scientists to erase a singl
admin
2014-04-20
67
问题
Researchers led by New York University neuroscientist Joseph LeDoux recently claimed to be the first scientists to erase a single memory. Working with rats, LeDoux’s team first【B1】______the animals to fear both a beep and a siren【B2】______giving them an electric shock every time either of the tones sounded. Then LeDoux gave half the rats the drug U0126, which is known to【B3】______with memory storage, and replayed the beep【B4】______electric shocks.
A day later, when LeDoux【B5】______back both tones to the rats, the animals that hadn’t been given the drug were still fearful of both sounds.【B6】______the rats that had been given the memory-blocking drug weren’t【B7】______of the beep, which they had last heard while【B8】______the influence of U0126.
【B9】______how U0126 exerts its amnesiac effect is【B10】______, but it may block the synthesis of proteins that help strengthen【B11】______between neurons and establish memories. The opportunity for erasure【B12】______during the act of retrieving a memory, because that’s【B13】______the memory is being updated and【B14】______again for long-term storage. " Only those memories that are activated are【B15】______," LeDoux says.
Drugs like U0126 may someday【B16】______sufferers of traumatic memories. A small group of human studies have been done on a drug called propranolol, which blocks the action of stress neurotransmitters that help【B17】______memories in the brain, but LeDoux’s work shows the【B18】______for greater precision. " You might be able to【B19】______the traumatic impact of memories in people," says LeDoux. " The good news is you wouldn’t be【B20】______off their memory bank. "
【B18】
选项
A、evidence
B、contradiction
C、potential
D、tendency
答案
C
解析
名词辨析题。前一分句提到名为普萘洛尔的记忆阻隔药物已经开始进行人体试验,它的原理是阻碍神经传递素的活动。文章在此处提到已有的记忆阻隔药物,就是要与U0126进行比较,这从后文的greaterprecision也可看出。但U0126的作用究竟如何,前后文一直都使用may或might等推测性的语言,因此选择potential,表示与其他药物相比,本文所提到的药物“具有更准确消除记忆的发展潜质或可能性”,故[C]为答案。首先排除[A]evidence“证据”和[B]contradiction“矛盾”,因为文章并没有讨论任何证据或指出有什么矛盾。[D]tendency表示“趋势”,主要说明自然呈现的倾向,且其后应搭配介词to或toward,故也不合题意,应排除。
转载请注明原文地址:https://kaotiyun.com/show/iPO4777K
0
考研英语一
相关试题推荐
Therehasbeenadiscussionrecentlyontheissueofchallengeinanewspaper.Writeanessayofabout200wordstothenewspaper
Therehasbeenadiscussionrecentlyontheissueofcommunicationinanewspaper.Writeanessayofabout200wordstothenewsp
Theenergycontainedinrockwithintheearth’scrustrepresentsanearlyunlimitedenergysource,butuntilrecentlycommercial
HereisaquickwaytospoilaBrusselsdinnerparty.SimplysuggestthatworldgovernanceisslippingawayfromtheG20,G7,G8
Whethertoteachyoungchildrenasecondlanguageisdisputedamongteachers,researchersandpushyparents.Ontheonehand,ac
Whethertoteachyoungchildrenasecondlanguageisdisputedamongteachers,researchersandpushyparents.Ontheonehand,ac
Therehasbeenadiscussionrecentlyontheissueoftraditioninanewspaper.Writeanessayofabout200wordstothenewspape
Supposeyourmotherhascometoseeyouandtonightyouwillsleepintheroomshehasbookedinahotelnearyouruniversity.W
Scientistsaroundtheworldareracingtolearnhowtorapidlydiagnose,treatandstopthespreadofanew,deadlydisease.SAR
Scientistsaroundtheworldareracingtolearnhowtorapidlydiagnose,treatandstopthespreadofanew,deadlydisease.SAR
随机试题
对于埋地设备及管道防腐蚀结构的施工质量检查项目不包括()。
设备及安装工程概算费用由设备购置费和安装工程费组成,设备购置费是指为项目建设而购置或自制的达到固定资产标准的设备、工器具、交通运输设备、生产家具等费用,还包括()。
一条信息对部分人是有价值的,而对其他人无价值,这说明信息具有()。【2009年真题】
孙某准备在市区设立一家批发企业,批发副食品,拟注册资本为50万元,拟聘用人工5人。企业预计年销售收入为170万,购货成本为136万,其他人工成本及耗费为10万,孙某在设立商贸企业的过程遇到以下问题,向注册会计师咨询,请您从注册会计师角度回答下列问题:如
仓库按保管物品种类多少可以分为()。
根据人民警察录用的有关规定,下列说法正确的是()。
2005年1-10月,贵州省的固定资产投资额与甘肃省相比:以2006年10个月的固定资产投资水平估算后两个月的固定资产投资水平,以2006年的前10个月的固定资产投资同比增长率估算固定资产投资的年增长率,可估算出2008年固定资产投资额在4000亿元以
设A是3阶矩阵,λ1=1,λ2=2,λ3=3是A的特征值,对应的特征向量分别是ξ1=[2,2,-1]T,ξ2=[-1,2,2]T,ξ3=[2,-1,2]T.又β=[1,2,3]T.计算:(1)Anξ1;(2)Anβ.
Accordingtothefirstparagraph,thegrandfatherresentedAccordingtotheauthor,thesafetynetcan
Rightatmomentalotofattention______tochildrenwholeaveschoolunabletoreadorwrite.
最新回复
(
0
)