首页
登录
职称英语
[originaltext] This room is devoted to electric fish. The eel in the tank be
[originaltext] This room is devoted to electric fish. The eel in the tank be
游客
2024-04-18
55
管理
问题
This room is devoted to electric fish. The eel in the tank behind me can produce a strong jolt of electricity to stun its prey, but most of the fish in here produce only weak electrical impulses that are useful for navigating. Locating food, and even for communicating.
The knife fish is good example. This fish navigates using tiny receptors in the skin that are sensitive to electrical impulses. The knife fish produces an electrical signal, and the receptors in its skin let it know when the signal it distorted by a tree root, or some other obstacle, so it can go around it.
Fish also use the ability to produce and detect electrical impulses to communicate. They can tell each other what species they belong to, how big they are, and whether they’re male or female. We have a tank here that’s specially equipped to convert the inaudible signals the ish produce into sounds you can hear when you put on these headphones. I urge you all to listen in when I’m done speaking.
Now have a look at the electric rays. Rays are especially interesting to medical researchers because of the organs they use to produce electricity. These organs contain a chemical that carries signals from one nerve ending to the next, not only in rays, but also in people. By studying these organs, scientists hope to learn more about diseases that interrupt the transmission of impulses from one nerve to another.
5. What is the talk mainly about?
6. What does the knife fish use electricity for?
7. Why does the speaker suggest putting on headphones?
8. According to the speaker, what medical benefits might from studying electric rays?
选项
A、To hear a translation of her talk.
B、To hear signals produced by electric fish.
C、To hear sounds used to train electric fish.
D、To hear a tape about electric fish.
答案
B
解析
说话者建议大家戴上耳机是因为这里有一个特殊的仪器,可以把鱼通过电脉冲进行的听不见的交谈转化为声音,因此选B。
转载请注明原文地址:https://tihaiku.com/zcyy/3560783.html
相关试题推荐
[originaltext]Beforeanewairlinergoesintoservice,everypartofitis
[originaltext]Beforeanewairlinergoesintoservice,everypartofitis
[originaltext]Yearsagobeforetherewererefrigerators,anice-housewasa
[originaltext]Facialexpressionscarrymeaningthatisdeterminedbysituat
[originaltext]W:Hi,Jack,haveyoufinishedProfessorSmith’sassignment?M:T
[originaltext]M:Hey,anyideaofwhattodothissummervacation?Theredoesn’
[originaltext]M:Hey,anyideaofwhattodothissummervacation?Theredoesn’
[originaltext]M:Hey,anyideaofwhattodothissummervacation?Theredoesn’
[originaltext]M:Hey,anyideaofwhattodothissummervacation?Theredoesn’
[originaltext]W:DidwehaveanyhomeworkassignedforFriday?Ididn’ttakean
随机试题
Whenwereceivethegoodsyoureturntous,you_____afullrefundwithin15wo
Evenachildknowsthatnoddingheadmeans"Yes".Butsomepeoplewouldprob
[originaltext]Goodmorningeveryone.MynameisCraigStone,andI’llbeyo
在建筑工程领域,经常因为设计图纸与实际施工的脱节,而产生不必要的材料剩余,所以应
某医院医技综合楼机电总承包工程,具体工作范围包括给排水、电气、暖通空调、消防、智
男性,大量饮白酒30年,近1年自觉周身乏力,食欲减退,近2个月腹围渐增大。入院查
根据《建设工程施工合同(示范文本)》(GF—2013—0201),下列工作内容中
下列资产不属于QDII基金投资范围的是()。A.银行承兑汇票 B.政府债券
共用题干 EatingPotatoesGivesYourImmune
在个人住房贷款业务中,贷后管理工作不包括()。A.合同签约 B.贷款档案管理
最新回复
(
0
)