首页
登录
职称英语
[originaltext] We’ve been looking at fear from biological perspective. And so
[originaltext] We’ve been looking at fear from biological perspective. And so
游客
2023-08-13
30
管理
问题
We’ve been looking at fear from biological perspective. And someone asked whether the tendency to be fearful is genetic. While some study done with mice indicate that mammals do inherit fearfulness to some degree. In one study for instance, a group of mice were placed in the bright lit open boxes with no hiding places. Some of the mice wondered around the box and didn’ t appear to be bothered about being so exposed. But other mice didn’ t move. They stayed up against one wall, which indicate that they were afraid. Well, when fearful mice or you might say anxious mice like ones who stayed in one place. When mice like this were bred with one another repeatedly, after about 12 or so generations, then all of the offspring show similar signs of fearfulness. And even when the new born mouse from this generation was raised by a mother and with other mice who were not fearful, that mice still tend to be fearful as the result. Now, why is this? Well, it’s thought that the specific gene in animal body have influenced on the anxious behavior. These genes that are associated with particular nerve cell receptors in brain. And the degree of overall fearfulness in the mammal seem to depend in the large part on the presence or absence of these nerve cell receptors. And this appears to apply to humans as well by the way. But while the tendency towards anxiety and fear may well be an inherited trait, but the specific form that the fear takes has more to do individual environment. So a particular fear like the fear of snakes or the fear of spider, say, is not genetic. But the overall tendency to have fearful responses is.
Now listen to the following recording and answer questions 16 to 18.
16. How did some of the mice in the study demonstrated that they were afraid?
17. According to the professor, what contribute to a mammal tendency to be fearful?
18. Why does the professor mention snakes and spiders?
选项
A、The extent of damage to the nervous system.
B、The presence or absence of certain nerve-cell receptors.
C、The size of nerve-cell receptors in the brain.
D、The level of danger in the mammal’ s environment.
答案
B
解析
细节题。根据And the degree of overall fearfulness in the mammal seem to depend in the large part on the presence or absence of these nerve cell receptors.可知,正确答案为B。
转载请注明原文地址:https://tihaiku.com/zcyy/2921261.html
相关试题推荐
[originaltext]Iwanttothankallofthestudentswhoareheretoday.AndI
[originaltext]Iwanttothankallofthestudentswhoareheretoday.AndI
[originaltext]Iwanttothankallofthestudentswhoareheretoday.AndI
[originaltext][19]Withinthenextfewweeksatwin-enginedJetstreamwillt
[originaltext][19]Withinthenextfewweeksatwin-enginedJetstreamwillt
[originaltext]Ifyouweretovisiteducation,asanalien,andsay"What’s
[originaltext]Choosingwhattoeatisnolongeraseasyasitoncewas.Sto
[originaltext]Choosingwhattoeatisnolongeraseasyasitoncewas.Sto
[originaltext]M:Hello,Nancy.Iknowyouareoneofthewomentaxidriversin
[originaltext]M:Hello,Nancy.Iknowyouareoneofthewomentaxidriversin
随机试题
VeraWanghasbecomeasignificantfigureintheAmericanfashionindustryi
Mike:Whyhaven’tmorewomenchosencareersinscience?Alice:Well,firstofal
ConradHiltonreallywantedtobeabanker.Instead,hesuccessfullychanged
[originaltext]W:(9)IsawareallyinterestingprogramonTVlastnight.Ittalk
在坚硬石料来源缺乏的情况下,允许掺加一定比例普通集料作为中等或小颗粒的粗集料,但
根据《建设工程工程量清单计价规范》,屋面及防水工程量计算,正确的说法是( )A.
目前,风险敏感度最高的操作风险计量方法是()。A.基本指标法 B.内部评
私募基金管理人提供的登记申请材料完备的,基金业协会应当自收齐登记材料之日起20个
朱砂安神丸中配伍黄连的意义是A.清心泻火 B.清热解毒 C.泻火解毒 D.
临床行后牙牙髓治疗时,应注意哪个牙的近中根95%含有双根管A.上颌第一前磨牙
最新回复
(
0
)