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
17
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)
Therehasbeenadiscussionrecentlyontheissueofchallengeinanewspaper.Writeanessayofabout200wordstothenewspaper
Youwereknockeddownbyataxitheotherday;apasser-bysentyoutothehospital.Writealettertothepersontoexpressyou
Therehasbeenadiscussionrecentlyontheissueofcommunicationinanewspaper.Writeanessayofabout200wordstothenewsp
Writeanessayof160~200wordsbasedonthefollowingdrawings.Inyouressay,youshould:1)describethedrawingbriefly
GeneralWesleyClarkrecentlydiscoveredaholeinhispersonalsecurity—hiscellphone.Aresourcefulblogger,hopingtocall
Supposeyourmotherhascometoseeyouandtonightyouwillsleepintheroomshehasbookedinahotelnearyouruniversity.W
FlorenceNightingaleismostrememberedasapioneerofnursingandareformerofhospitalsanitationmethods.Formostofhern
随机试题
王某因盗窃罪被法院判处有期徒刑3年,刑罚执行1年以后,王某以患有严重疾病、生活不能自理为由,申请暂予监外执行,请根据本案情况回答下列问题:对于暂予监外执行的王某:()
既能清热泻火,又能滋阴润燥的药物是()
A.经穴B.奇穴C.阿是穴D.五输穴E.八会穴
A.人参、当归、川芎、白芍、桂心、莪术、丹皮、牛膝、甘草B.人参、当归、熟地黄、杜仲、山药、山茱萸、枸杞子、炙甘草C.桂枝、吴茱萸、当归、芍药、川芎、人参、生姜、麦门冬、半夏、牡丹皮、阿胶、甘草D.当归、熟地黄、白芍、丹皮、茯苓、沙参、黑芥穗E.当
项目发起人与其任命并授权的项目经理和管理团队依据双方达成的协议来实施的、双方互动检查实现项目目标的过程是()。
以“探究影响压力作用效果的因素”为例,简述科学探究的基本过程。
试分析北宋中期的形势,论述王安石变法的必要性和局限性。
大多数独生子女都有以自我为中心的倾向。有些非独生子女同样有以自我为中心的倾向。自我为中心倾向的产生有各种原因,但一个共同原因是缺乏父母的正确引导。如果上述断定为真,则以下哪项一定为真?
如果有定义LOCALdata,data的初值是
Fromthepassage,weknowthat______.WhichofthefollowingisNOTtrueaccordingtothepassage?
最新回复
(
0
)