文都考研半年集训营
免费咨询电话

2019考研英语二完形填空真题源:松鼠能记住宝贝的地点

2018-02-11 10:14 | 考研集训营

2019考研英语二完形填空历年来是考试难度比较大的题型,虽然从2017年完形填空的难度水平有所降低,但对考生备考来说也是有一定的难度,考生在备考初期练习时可以多阅读完形填空真题源文章,例如科学美国人杂志。2018考研英语二完形填空真题源为:Scientific American(科学美国人),本期小编整理了考研英语完形填空真题源科学美国人的相关资料,供考生参考。

松鼠能记住它们埋藏宝贝的地点

We humans sometimes use a memory technique called chunking. For example, with phonenumbers we usually remember the three-digit chunk and the four-digit chunk. Two items instead ofseven.

"Well, the way I think about chunking is it's any shortcutting strategy or mnemonic device thatwould allow an animal, be it human or otherwise, to increase their memory capacity and improverecall." Mikel Delgado, an animal behaviorist now at U.C. Davis.

"And so in the case of the research I was doing in this study, I wanted to know if squirrels wouldbasically arrange their nuts in a way that might facilitate either recall of the location or recachingand redistribution of those nuts later, making it more convenient for them to remember wherenuts were stored—because they stored nuts of a similar type or value in similar locations spatially."

Delgado looked for this spatial chunking among 45 fox squirrels on the campus of U.C. Berkeley, where she got her doctorate in August.

"So we gave each squirrel 16 nuts...our each of four different types...so the types were almonds, hazelnuts, walnuts and pecans."

"And so we'd give the squirrel the first nut, they'd go bury it. We would follow them from a distanceuntil they had finished caching, or burying it. We recorded the GPS location where they'd buried thenut. And then we lured them back to the original location where they received the first nut to givethem the second nut. And so we did that every single time."

"And so the other location condition was basically a lot faster and easier where we gave the squirrelthe first nut, they buried it, and then we gave them the second nut right where they buried the firstone."

And when the squirrels got all their nuts from a central location, they spatially chunked them: "Sothey would actually cache nuts that were the same species in distinct areas from nuts of adifferent species...so the take home message I think for me is really that just like physical traitshave evolved, I believe that cognitive traits have evolved as well. And a memory process that'svery common in humans, this chunking, is a strategy that works for other species."

The study is in the journal Royal Society Open Science.

Why the critters did not spatially chunk when they received nuts in different locations is not clear. Todo so might have been too energetically costly. It's also possible that it's beyond their cognitivecapacity—although anyone who has tried to squirrel-proof a bird feeder knows that squirrels havea lot of cognitive capacity.

重点讲解:

1. set up 创建;建立;安排;组建;

例句:I set up the computer so that they could work from home.

我把电脑设置好,这样他们就可以在家办公了。

2. seek out 寻找到;找出;

例句:We are trying to seek out the trouble spot of the instrument.

我们正试图找出仪器的故障。

3. a suite of 一系列;一套;

例句:He has composed a suite of music for the film.

他为该电影配写了一套乐曲。

4. be full of 有大量…的;满是…的;

例句:Weegee's photographs are full of artfulness, and artifice.

维基的摄影作品运用了丰富的艺术手段和技巧。

重点单词

strategy['strætidʒi]n. 战略,策略

technique[tek'ni:k]n. 技术,技巧,技能

precise[pri'sais]adj. 精确的,准确的,严格的,恰好的

plane[plein]adj. 平的,与飞机有关的

departure[di'pɑ:tʃə]n. 离开,出发,分歧

distinct[dis'tiŋkt]adj. 独特的,不同的,明显的,清楚的

arrange[ə'reindʒ]vt. 安排,整理,计划,改编(乐曲)

costly['kɔstli]adj. 昂贵的,代价高的

facilitate[fə'siliteit]vt. 帮助,使 ... 容易,促进

redistribution[,ri:distri'bju:ʃən]n. 重新分配

有一分钟时间吗?

新技术将焦点放在北美两大最凶猛食肉动物间的罕见攻击行为上。过去几十年来,美洲狮和熊的数量一直在回升。但是直到最近,研究人员才知道这些强大捕食性动物的互动方式。

为了加强对这些潜在重量级较量的理解,科学家在不列颠哥伦比亚省设置了动作感应相机,这两个物种在该省的数量都在增加。研究人员将相机安装在乡村地区,这样一来,黑熊在温哥华岛海岸线上闲逛时就会触发扬声器,播放美洲狮的吼叫声。摄像机拍下了黑熊的反应——它们并不害怕。

“它们几乎总会走近声源,许多时候还会展现出咄咄逼人的架势。”贾斯汀·苏拉奇是加州大学圣克鲁兹分校的环境研究员,他也参与了此项研究。

这种攻击性行为以不同的方式显现出来。熊妈妈的脾气是最暴躁的,实际上,有6只母熊向美洲狮的声音发起了攻击,有1只母熊甚至咬住了扬声器。另一方面,落单的熊会走近扬声器,并时常发出挑衅性的怒吼。

苏拉奇表示,对熊来说,美洲狮的叫声可能意味着它们能轻易抢走食物。这一地区的美洲狮经常把它们捕杀的海豹和海狮藏起来,过几天再回来取食。而熊会找到美洲狮藏起来的食物,并把美洲狮赶走。这项研究结果发表在《动物行为学》期刊上。

该结果使研究人员得以更好地了解在同一地区生存的大型食肉动物的互动方式。

“许多研究表明,当一个地方有很多大型顶级掠食者时,以北美为例,美洲狮、狼和熊的地位并不平等。”而在争夺顶端位置的互动行为中,经常充斥着吼叫声和怒火。

以上就是本期小编整理的2019考研英语二完形填空真题源科学美国人的原文资料,建议考生先根据英文通读一遍,然后根据单词解释再一次进行阅读,最后再看一下中文意思,以上内容供考生参考。

推荐阅读:2019考研英语二完形填空真题源(汇总)

(责任编辑:夏然 )
文都教育简介| 联系我们 | 版权声明| 支付方式| 友情链接| 网站导航| 百度地图| 音乐

Copyright copy;2001-2018 WENDU Corporation All Rights Reserved. 世纪文都教育科技集团股份有限公司 版权所有
全国统一报名专线:400-0999-680 京ICP备05001816号-29
考研集训营为广大考研学子提供最新 2019研究生招生简章2019考研报名时间2019考研现场确认时间考研复习大纲 等资讯
考研集训营—中国考研培训辅导领先品牌

京公网安备 11010802020012号