首页
登录
职称英语
To many web-building spiders, most of whom are nearly blind, and the web is
To many web-building spiders, most of whom are nearly blind, and the web is
游客
2023-11-22
50
管理
问题
To many web-building spiders, most of whom are nearly blind, and the web is their essential window on the world:their means of communicating, capturing prey, meeting mates and protecting themselves. A web-building spider without its web is like a man marooned on an island of solid rock, totally out of touch and destined to starve to death.
So vital is the web to an orb-web spider’s survival that the animal will continue to construct new webs daily even if it is being starved. For 16 days the starving spider builds completely normal webs. Then, as the animal gets scrawnier, it constructs a wider-meshed web using fewer strands. Such webs would only trap larger prey, which is more economical from the perspective of a starving spider.
The spider conserves energy by recycling web protein. It simply eats its own web each evening and re-uses it to manufacture new silk. In studies with radioactively labeled materials, it was found that 95 percent of web protein reappears in the next day’s web. Most of the energy needed for web-building is used in walking over the strands as they are laid down.
Scientists are impressed by the adaptability of the spider’s highly preprogrammed brain, which is larger for its size than the brain of any other invertebrate. If web-building is interrupted, or if some of the existing strands are destroyed, the spider simply retraces its steps to see where the web is left off and then finishes building a normal web. One spider will even finish building the incomplete web of another. [br] A title that would best express the main idea of the passage would be ______.
选项
A、Secrets of Spiders
B、Secrets of the Spider Web
C、Secrets of Nature
D、A New Discovery of Scientists
答案
B
解析
本文重点讲述了蜘蛛网对蜘蛛的重要性及有关信息,所以B 为正确答案。A 的内容不是文章的重点;C 和D 所指范围太广,也不适合本题。
转载请注明原文地址:https://tihaiku.com/zcyy/3208863.html
相关试题推荐
Nearlyeverycountryinthedevelopedworld,andmoreandmoreinthede
PassageTwo(1)Whenuniversitytuitioncostsnearlytrebledfrom£3,3
PassageTwo(1)Whenuniversitytuitioncostsnearlytrebledfrom£3,3
PassageTwoItwasnearlybedtimeandwhentheyawokenextmorningland
PassageTwoItwasnearlybedtimeandwhentheyawokenextmorningland
Tomanyweb-buildingspiders,mostof【C1】______arenearlyblind,thewebi
Tomanyweb-buildingspiders,mostof【C1】______arenearlyblind,thewebi
Tomanyweb-buildingspiders,mostof【C1】______arenearlyblind,thewebi
Tomanyweb-buildingspiders,mostof【C1】______arenearlyblind,thewebi
Tomanyweb-buildingspiders,mostof【C1】______arenearlyblind,thewebi
随机试题
Americansbelievesomuchinmovingaheadthattheyare【C1】______researchi
关键过程是指()。A.施工难度大、过程质量不稳定或出现不合格频率较高的过程
A企业最近将现有的客户关系系统迁移至虚拟化平台,并对应用软件进行全面功能性升级
既能敛汗,又能补肾宁心安神的药物是A.牡蛎 B.酸枣仁 C.五味子 D.龙
在脱疽的诊断中下列哪一条是错误的A.20~40岁男性多发 B.足趾遇冷刺激后发
2006年,张某为了加快发展,注销了其原有的房地产经纪事务所,新成立了甲房地产经
消毒硅胶胃管不宜选用的方法是A.高压蒸汽灭菌法 B.煮沸法 C.乙醇浸泡
根据破产法律制度的规定,下列债务中,在清偿破产费用和共益债务后,应从破产财产中按
银行承兑汇票的承兑银行,应当按照票面金额向出票人收取()的手续费。A:千分之一
某施工单位承建了某一级公路工程,起讫桩号K6+000~K16+000,其中K12
最新回复
(
0
)