首页
登录
职称英语
[originaltext] We’ve been looking at fear from biological perspective. And s
[originaltext] We’ve been looking at fear from biological perspective. And s
游客
2023-08-16
32
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/2931023.html
相关试题推荐
[originaltext]Choosingwhattoeatisnolongeraseasyasitoncewas.Sto
[originaltext]Choosingwhattoeatisnolongeraseasyasitoncewas.Sto
[originaltext]NewYorkers,wholiveinthecitythatfamouslyneversleeps,
[originaltext]NewYorkers,wholiveinthecitythatfamouslyneversleeps,
[originaltext]Recently,aprofessorofphilosophyintheUnitedStateshas
[originaltext]M:Hi,Janet,wherewereyouatlunchtime?Iwassavingaseatf
[originaltext]M:Hi,Janet,wherewereyouatlunchtime?Iwassavingaseatf
[originaltext]W:I’vebeenreadingaboutanewhealthysnackfood.It’smadefr
[originaltext]W:I’vebeenreadingaboutanewhealthysnackfood.It’smadefr
[originaltext]M:LoisandIwanttohavedinnertogetherafterclassnextFrida
随机试题
(1)Menandwomentendtochoosedifferentcareerpaths,andresearchershav
Studentswouldrathertryonceagainthan(give)_______uptheplan.givewouldrath
Completethenotesbelow.WriteNOMORETHANTWOWORDSforeachanswer.CLIMATE
提供价值就是要()。A.确定产品 B.制订价格 C.分销产品 D.通过
某混凝土试块强度值不满足规范要求,但经法定检测单位对混凝土实体强度经过法定检测后
肾炎性水肿主要是由于 A.肾小球滤过率下降B.大量蛋白尿致血浆蛋白降低 C
1949年3月5日,( )在中国共产党第七届中央委员会第二次全体会议上说:“我
偿债能力的衡量方法有( )。A.比较可供偿债资产与债务的存量 B.比较短期债务
工程总承包企业投标报价决策时应准确估计成本,其成本费用应由()等组成。A.
下列建设工程项目进度控制的措施中,属于管理措施的有()。A.采用工程网络计划实现
最新回复
(
0
)