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
2024-04-09
33
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/3547283.html
相关试题推荐
[originaltext]Choosingwhattoeatisnolongeraseasyasitoncewas.Sto
[originaltext]Choosingwhattoeatisnolongeraseasyasitoncewas.Sto
[originaltext]Choosingwhattoeatisnolongeraseasyasitoncewas.Sto
[originaltext]NewYorkers,wholiveinthecitythatfamouslyneversleeps,
[originaltext]NewYorkers,wholiveinthecitythatfamouslyneversleeps,
[originaltext]NewYorkers,wholiveinthecitythatfamouslyneversleeps,
[originaltext]Recently,aprofessorofphilosophyintheUnitedStateshas
[originaltext]W:I’vebeenreadingaboutanewhealthysnackfood.It’smadefr
[originaltext]M:LoisandIwanttohavedinnertogetherafterclassnextFrida
[originaltext]M:LoisandIwanttohavedinnertogetherafterclassnextFrida
随机试题
Whatisthepatientsufferingfrom?[originaltext]M:Ifyou’lljusthaveaseat,
[originaltext]M:Theticketstotonight’sshowingare$5foradultsandhalfth
ThespaceageofficiallybeganonOctober4,1957,【C1】______theSovietUnion
混凝土搅拌机按安装形式分为( )。A.周期式、连续式 B.自落式、强制式 C
生理性体重下降的范围一般是出生体重的()A.15%~20% B.10
女,58岁。绝经后出现阴道少量流血1个月。妇科检查见宫口脱出红色肿物,直径约4.
为了进一步验证研究结论的(),应通过交叉检验等方法进行进一步抽样调查分析。A:
A.排便时无痛,排便终末时粪便沾有鲜血,并有粉红色球形肿块脱出 B.排便时有少
简述现代企业人力资源管理各个历史发展阶段的特点。
某电气线路正常工作电流为10A,线路上1s的发热量为1J,即线路上功率损耗为1W
最新回复
(
0
)