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
46
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. "
【B3】
选项
A、interfere
B、prevent
C、disturb
D、obstruct
答案
A
解析
动词辨析题。本题所在句介绍实验的第二个步骤。实验者将对两种声音都恐惧的老鼠分组,一半服用药物,而本空所在的定语从句则用于说明这种药物的作用。可根据第二段第二句中的“the memory-blocking drug”,可知该药物是干扰阻隔记忆的,再根据其后的介词with可确定[A]interfere“干扰”为答案。首先排除[B]prevent“防止”,意为不让某事发生,而不是对已有的事实进行干扰,故不符合题意。[C]disturb“干扰”和[D]obstruct“阻隔”虽然在意义上接近正确答案,但两者都是及物动词,不能与后文的with搭配,故也应排除。
转载请注明原文地址:https://kaotiyun.com/show/BJO4777K
0
考研英语一
相关试题推荐
Writeanessayof160200wordsbasedonthefollowingdrawing.Inyouressay,youshould1)describethedrawingbriefly,2)
Writeanessayof160~200wordsbasedonthefollowingdrawings.Inyouressay,youshould:1)describethedrawingbriefly
Youwanttoapplyforthefollowingjob.WritealettertoMrMooredescribingyourpreviousexperienceandexplainingwhyy
Guthrie’scontiguityprincipleofferspracticalsuggestionsforhowtobreakhabits.Oneapplicationofthethresholdmethod
HereisaquickwaytospoilaBrusselsdinnerparty.SimplysuggestthatworldgovernanceisslippingawayfromtheG20,G7,G8
ThefirsttechnologicalrevolutioninmodernbiologystartedwhenJamesWatsonandFrancisCrickdescribedthestructureofDNA
ThefirsttechnologicalrevolutioninmodernbiologystartedwhenJamesWatsonandFrancisCrickdescribedthestructureofDNA
随机试题
防治红蜘蛛使用三氯杀螨醇只对()有效。
设函数f(χ)=(χ-a)g(χ),其中g(χ)在点χ=a处连续,求fˊ(a)。
关于尤因(Ewing)肉瘤的描述,错误的是
某安全评价机构对一火力发电厂划囱排出的粉尘进行危险、有害因素辨识分类时,评价人员之发出现意见分歧。按照《生产过程危险和有害因素分类与代码》(GB/T13861-/992)的规定,该危险、有害因素属于()。
背景资料A公司在冬季承接了一室外压缩空气管网系统的安装,系统工作压力为2.5MPa。由于工期较紧,A公司将系统中部分规格的直管分包给B公司。A公司和B公司均具备与承包管道系统相符的压力管道施工许可证,管道及管件均由业主提供。管道系统施工
下列关于票据上出票日期的中文大写中,正确的是()。
上市公司并购重组项目的财务顾问主办人发生变化的财务顾问应当在()个工作日内向中国证监会报告。
下列关于中共七届二中全会的说法中,正确的是()。
Thebattletopreventoratleastslowglobalwarminghasintensifiedinthepastyearasscientistshavelearnedmoreaboutthe
Juliamust______now,becausethelightofherroomisturnedoff.
最新回复
(
0
)