首页
登录
职称英语
To many web-building spiders, most of【C1】______ are nearly blind, the web i
To many web-building spiders, most of【C1】______ are nearly blind, the web i
游客
2023-11-24
40
管理
问题
To many web-building spiders, most of【C1】______ are nearly blind, the web is their essential window【C2】______ the world., their means of communicating,【C3】______ prey, meeting mates and protecting themselves. A web-building spider【C4】______ its web is like a man marooned on an island of solid rock, totally out of touch and destined to starve to death. So【C5】______ is the web to an orb-web spider’s survival that the animal will continue to construct new webs daily【C6】______ it is being starved.
For 16 days the【C7】______ spider builds completely normal webs. Then, as the animal gets scrawnier, it constructs a wider-meshed web using【C8】______ strands. Such webs would only trap larger prey, which is more【C9】______ from the perspective of a starving spider.
The spider【C10】______ energy by recycling web protein. It simply eats its own web each evening and re-uses it to manufacture【C11】______ silk. In studies with radioactively labeled materials, it【C12】______ that 95 percent of web protein reappeared in【C13】______ web. Most of the energy needed for web-building is used in walking over the strands as they are laid down.
Scientists are【C14】______ by the adaptability of the spider’s highly preprogrammed brain, which is larger【C15】______ its size than the brain of any other invertebrate. If web-building is interrupted, or if some of the【C16】 ______ strands are destroyed, the spider【C17】______ retraces its steps to see where the web is【C18】______ and then finishes building a【C19】______ web. One spider will even finish building the incomplete web of【C20】______ . [br] 【C12】
选项
A、was found
B、found
C、has found
D、had found
答案
A
解析
此题考查被动语态。首先,根据形式主语判断出这里应该使用被动语态。其次,从句首的In studies with radioactively labeled materials以及后面的reappeared可以看出,应该使用过去式。因此,A项符合题意。
转载请注明原文地址:http://tihaiku.com/zcyy/3214003.html
相关试题推荐
Nearlyeverycountryinthedevelopedworld,andmoreandmoreinthede
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
Tomanyweb-buildingspiders,mostof【C1】______arenearlyblind,thewebi
随机试题
Asindividuals,weareinherentlymorelimitedthanacommunity.Althoughwe
[originaltext]M:MayIhelpyou?W:Yes,Iwouldliketoreturnthesetrousers.
HasNancystoppedsmokingnow?[originaltext]Nancyhascompletelystayedoffcig
{图1}
下列关于工艺安全风险术语的说法中错误的是( )。A.目标工艺操作温度是反应过程中
氧流量为4L/min,氧浓度为( )。A.33% B.37% C.40%
2017年我国成年国民图书阅读率为59.1%,比上年增加0.3个百分点;报纸阅读
根据《社会保险法》,符合()的医疗费用,按照国家规定从基本医疗保险基金中支付。
A.黄连 B.黄芩 C.地骨皮 D.石膏 E.银柴胡既能清肺热,又能安胎
误服汞产生的急性汞中毒,最先表现的症状是A.口腔炎、胃肠炎 B.头痛、头晕
最新回复
(
0
)