2021年考研英語(yǔ)必讀 以免我們忘記或讓我們記住

1、考研英語(yǔ)必讀 以免我們忘記或讓我們記住 考研英語(yǔ)必讀 以免我們忘記或讓我們記住 時(shí)間進(jìn)入6月份，xx考研將進(jìn)入強(qiáng)化復(fù)習(xí)階段，還沒(méi)有開(kāi)始復(fù)習(xí)的考生要收收心，抓緊時(shí)間復(fù)習(xí)了。隨著第一階段的基礎(chǔ)復(fù)習(xí)接近尾聲，同學(xué)們要逐漸加強(qiáng)提升考研英語(yǔ)閱讀理解能力，下面為大家考研英語(yǔ)閱讀題源，希望大家能把握這一分值較大的題型。 Lest We Forget or Lest We Remember? People remember emotionally charged events more easily than they recall the quotidian. A _ual encounter trumps

2、 doing the gro _ry shopping. A mugging trumps a journey to work. Witnessing a _ssacre trumps pretty well anything you can i _gine. That is hardly surprising. Rare events that might have an impact on an individuals survival or reproduction should have a special fast lane into the memory bank-and they

3、 do. It is called the a2b-adreno _ptor, and it is found in the amygdala, a part of the brain involved in pro _ssing strong emotions such as fear. The role of the 2b-adreno _ptor is to promote memory for _tion-but only if it is stimulated by _. Sin _ emotionally charged events are often aompanied by

4、_ secretion, the 2b-adreno _ptor acts as a gatekeeper that decides what will be remembered and what discarded. However, the gene that encodes this re _ptor es in two varieties. That led Dominique de Quervain, of the University of Zurich, to wonder if people with one variant would have better emotion

5、al memories than those with the other. The short answer, just published in Nature Neuroscien _, is that they do. Moreover, sin _ the frequencies of the two variants are different in different groups of people, whole populations _y have different mixtures of emotional memory. The reason Dr de Quervai

6、n suspected the variants might work differently is that the rarer one looks like the moner one when the latter has a memory-enhancing drug called yohimbine attached to it. His prediction, therefore, was that better emotional memory would be associated with the rarer version. And that did, indeed, tu

7、rn out to be the case in his first experiment. This involved showing students photographs of positive s _nes such as families playing together, negative s _nes such as car aidents, and neutral ones, such as people on the phone. Those students with at least one gene for the rarer version of the prote

8、in (everyone has two such genes, one from his father and one from his mother) were twi _ as good at remembering details of emotionally charged s _nes than were those with only the mon version. When phone- callers were the subject; there was no differen _ in the quality of recall. That is an interest

9、ing result, but some of Dr de Quervains colleagues at the University of Konstanz, in Ger _ny, were able to take it further in a second experiment. In fact, they took it all the way along a dusty road in Uganda, to the Nakivale refugee camp. This camp is home to hundreds of refugees of the Rwandan ci

10、vil war of 1994. In this second experiment the researchers were not asking about photographs. With the help of specially trained interviewers, they recorded how often people in the camp suffered flashbacks and night _res about their wartime experien _s. They then pared those results with the 2b-adre

11、no _ptor genes in their volunteers. As predicted, those with the rare version had significantly more flashbacks than those with only the mon one. Besides bolstering Dr de Quervains original hypothesis, this result is interesting because only 12% of the refugees had the rarer gene. In Switzerland, by

12、 contrast, 30% of the population has the rare variety-and the Swiss are not nor _lly regarded as an emotional people. Whether that result has wider implications re _ins to be seen. Hu _n geics has a notorious history of jumping to extravagant conclusions from scant data, but that does not mean conclusions should be ducked if the data are good. In this case, the statistics suggest Rwanda _y have been lucky: the long-term mental-health effects of the war _y not be as widespread as they have