首页
登录
职称英语
The idea of a fish being able to generate electricity strong enough to light
The idea of a fish being able to generate electricity strong enough to light
游客
2025-03-24
19
管理
问题
The idea of a fish being able to generate electricity strong enough to light lamp bulbs—or even to run a small electric motor—is almost unbelievable, but several kinds of fish are able to do this. Even more strangely, this curious power has been acquired in different ways by fish belonging to very different families.
Perhaps the best known are the electric rays (鳐鱼),or torpedoes (水雷鱼),of which several kinds live in warm seas. They possess on each side of the head, behind the eyes, a large organ consisting of a number of cells which contain a series of flat electric plates. One side, the negative side, of each plate, is supplied with very fine nerves, connected with a main nerve coming from a special part of the brain. Current passes from the upper, positive side of the organ downwards to the negative, lower side. Generally it is necessary to touch the fish in two places, completing the circuit, in order to receive a shock.
Another famous example is the electric eel (鳗鱼).This fish gives an even more powerful shock. The system is different from that of the torpedo in that the electric plates run along the length of its body and are supplied with nerves from the spinal cord (脊髓). Consequently, the current passes along the fish from head to tail. The electric organs of these fish are really altered muscles and like all muscles, they tend to tire easily, so they are not able to produce electricity for very long.
The power of producing electricity may serve these fish both for defense and attack. If a large enemy attacks, the shock will drive it away; but it appears that the electric eel uses its current most often against smaller fish. [br] Electric rays are likely to be______.
选项
A、near the North Pole
B、in warm waters
C、near the South Pole
D、both A and B
答案
B
解析
本题是一道具体细节题。问电鳐鱼可能生活在什么地方。利用查阅式阅读法,我们可以在第二段中找到相关信息。这段指出,也许最为人们所熟知是电鳐鱼,或称水雷鱼,其中几种生活在温暖的海域。因此,本题的正确答案是B“生活在温暖的水域”。
转载请注明原文地址:https://tihaiku.com/zcyy/4010406.html
相关试题推荐
Theideaofafishbeingabletogenerateelectricitystrongenoughtolight
Theideaofafishbeingabletogenerateelectricitystrongenoughtolight
Theideaofafishbeingabletogenerateelectricitystrongenoughtolight
Theideaofafishbeingabletogenerateelectricitystrongenoughtolight
Thestrongwindwithsandcomesfromthe______hillinfrontoftheirhouse.A、emp
Nowadaysitisnotuncommonforabig,strongschoolboytoelbowanelderlywoma
Thefirstmentostudythenatureofelectricitycouldnotimaginethattheirex
HespeaksEnglishwithstrongAmericanaccent,sohe______broughtupintheUni
Wouldyoubekindenough______mehowtogototheoffice?A、astotellB、totell
Atsometimeinyourlifeyoumayhaveastrongdesiretodosomethingstran
随机试题
Hehasbeencalledthe"missinglink."Half-man,half-beast.Heissupp
Lauraopenedtheenvelope,(fold)______theletterandbegantoreaditcareful
一分子葡萄糖彻底氧化分解生成的ATP数量是()。A.12 B.24 C.
盐酸哌唑嗪属于A.胆碱受体激动剂 B.胆碱受体拮抗剂 C.肾上腺素能受体激动
某市2009年底进行棚户区改造。房屋拆迁补偿方式,棚户区业主可以选择房屋产权
秦老师是某中学的班主任,最近时常有任课老师向他反映小刚上“捣乱”,秦老师找到学校
与“气虚”关系最大的两个脏腑是A.心与肺 B.肺与脾 C.脾与胃 D.肝与
甲开发商修建某小区并与乙物业公司订立物业服务合同期限三年。翌年该小区成立业主大会
某工程,建设单位委托监理单位承担施工招标代理和施工监理任务,工程实施过程中发生如
下列关于防水混凝土施工缝留置技术要求的说法中,正确的有()。A.墙体水平施工缝
最新回复
(
0
)