首页
登录
职称英语
Australian researchers have discovered electroreceptors(sensory organs desig
Australian researchers have discovered electroreceptors(sensory organs desig
游客
2025-02-26
10
管理
问题
Australian researchers have discovered electroreceptors(sensory organs designed to respond to electrical fields)clustered at the tip of the spiny anteater’ s snout. The researchers made this discovery by exposing small areas of the snout to extremely weak electrical fields and recording the transmission of resulting nervous activity to the brain. While it is true that tactile receptors, another kind of sensory organ on the anteater’ s snout, can also respond to electrical stimuli, such receptors do so only in response to electrical field strengths about 1, 000 times greater than those known to excite electro-receptors.
Having discovered the electroreceptors, researchers are now investigating how anteaters utilize such a sophisticated sensory system. In one behavioral experiment, researchers successfully trained an anteater to distinguish between two troughs of water, one with a weak electrical field and the other with none. Such evidence is consistent with researchers’ hypothesis that anteaters use electroreceptors to detect electrical signals given off by prey; however, re- searchers as yet have been unable to detect electrical signals emanating from termite mounds, where the favorite food of anteaters live. Still, researchers have observed anteaters breaking into a nest of ants at an oblique angle and quickly locating nesting chambers. This ability quickly to locate unseen prey suggests, according to the researchers, that the anteaters were using their electrorecep- tors to locate the nesting chambers. [br] The author of the passage most probably discusses the function of tactile receptors(lines 10-17)in order to
选项
A、eliminate and alternative explanation of anteaters ’ response to electrical stimuli.
B、highlight a type of sensory organ that has a function identical to that of electroreceptors.
C、point out a serious complication in the research on electroreceptors in anteaters.
D、suggest that tactile receptors assist electroreceptors in the detection of electrical signals.
E、introduce a factor that was not addressed in the research on electroreceptors in anteaters.
答案
A
解析
作者为什么在L10—17讨论触觉接收器?A.正确。去掉一个关于食蚁兽对电流起反应的另一个解释。即触觉接收器的解释。B.强调一感觉器官和电接收器有同样作用。两者作用不是identical。C.指出研究电接收器复杂。D.指出触觉帮助电接收器探测电信号。E.举出研究电接收器时没考虑的因素。这三者都不符原文叙述。
转载请注明原文地址:https://tihaiku.com/zcyy/3973855.html
相关试题推荐
Australianresearchershavediscoveredelectroreceptors(sensoryorgansdesig
Australianresearchershavediscoveredelectroreceptors(sensoryorgansdesig
Australianresearchershavediscoveredelectroreceptors(sensoryorgansdesig
Australianresearchershavediscoveredelectroreceptors(sensoryorgansdesig
InSwartkansterritory,archaeologistsdiscoveredcharredhonefragmentsdating
X-rayexaminationofarecentlydiscoveredpainting—judgedbysomeauthorities
Aresearcherdiscoveredthatpeoplewhohavelowlevelsofimmune-systemactivit
Aresearcherdiscoveredthatpeoplewhohavelowlevelsofimmune-systemactivit
MarinearchaeologistsrecentlydiscoveredunderwaterinanancientMediterranean
Researchershavediscoveredanewpoison,bromethalin,thatislethaltoallrat
随机试题
Itishightimethatyou______abath;whyareyoustillwatchingTV?A、willtak
[originaltext]M:Whethertheyareattendingcollegeorworkingtheirfirstjobs
Presentlyhemadethesuggestionthatthey(carryon)______theirconversation
案例: 郝老师在上高中美术鉴赏课《中国民间美术》时,要求学生以小组形式收集、欣
已知数列{an)与数列{bn),n=1,2,3…,则下列结论不正确的是()。
下列关于我国证券公司风险管理基本情况的说法正确的有()。 ①风险限额方面,
企业清算按不同性质,分为()。A.自愿清算 B.行政清算 C.破产清算
根据《政府投资条例》,政府投资范围以非经营性项目为主,对确需支持的经营性项目,主
根据《建设工程施工专业分包合同(示范文本)》(GF—2003—0213)不属于承
施工单位与建设单位签订施工合同后,将其中的部分工程分包给分包单位,则施工现场的安
最新回复
(
0
)