首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
Through a series of experiments an American scientist has obtained an understanding of the social structure of the most complex
Through a series of experiments an American scientist has obtained an understanding of the social structure of the most complex
admin
2010-01-18
35
问题
Through a series of experiments an American scientist has obtained an understanding of the social structure of the most complex of ant societies. The ants examined are the only creatures other than man to have given up hunting and collecting for a completely agricultural way of life. In their underground nests they cultivate gardens on soil made from finely chopped leaves. This is a complex operation requiring considerable division of labor. The workers of this type of ants can be divided into four groups according to size. Each of the groups performs a particular set of jobs.
The making and care of the gardens and the nursing of the young ants are done by the smallest workers. Slightly larger workers are responsible for chopping up leaves to make them suitable for use in the gardens and for cleaning the nest. A third group of still larger ants do the construction work and collect fresh leaves from outside the nest. The largest are the soldier ants, responsible for defending the nest.
To find out how good the various size-groups are at different tasks, the scientist measured the amount of work done by the ants against the amount of energy they used. He examined first the gathering and carrying of leaves. He selected one of the size-groups, and then measured how efficiently these ants could find leaves and nm back to the nest. Then he repeated the experiment for each of the other size-groups. In this way he could see whether any group could do the job more efficiently than the group normally undertaking it.
The intermediate-sized ants that normally perform this task proved to be the most efficient for their energy costs, but when the scientist examined the whole set of jobs performed by each group of ants it appeared that some sizes of worker ants were not ideally suited to the particular jobs they performed.
The scientist’s work was based on _______.
选项
A、occasional observations
B、systematic observations
C、observations of several nests
D、observations of undisturbed nests
答案
B
解析
综观全文,文章第一段指出:科学家注意到蚂蚁是除人之外的惟一已放弃狩猎和采集食物过着完全农业生活方式的生物;第二段指出科学家对蚂蚁按个体大小进行的分工情况进行研究;第三段介绍了科学家对蚂蚁的工作效率的研究;最后一段指出科学家研究发现蚂蚁社会中也存在分工不合理的现象。由此可看出科学家对蚂蚁的研究是系统的。故选[B]。
转载请注明原文地址:https://kaotiyun.com/show/wtvO777K
0
专业英语八级
相关试题推荐
Alllivingcellsonearthrequiremoisturefortheirmetabolism.Cerealgrainswhenbroughtinfromthefield,althoughtheymay
Britishpeoplearefarmoresophisticatedaboutbeveragesthantheywere50yearsago.WitnesstheStarbucksrevolutionandyou’
A、Aftersavingupenoughmoney.B、Throughalotofpersuasion.C、Byhisoutstandingperformanceatschool.D、Withthesympathya
HowdidtheOlympicGamesstart?InancientGreeceathleticfestivalswereveryimportantandhadstrong【C1】______.Originallyt
Whatisdistancelearning?Itmeansthatyoustudyonyourown,athomeorwhereversuitsyou.Recently,theworldfamousOpenU
Doesusingawordprocessoraffectawriter’sstyle?Themediumusuallydoesdosomethingtothemessageafterall,evenifMars
A、Ifyouaretooaggressive,youwillfinditdifficulttobecomesuccessfulinyourcitylife.B、Yourpersonalityhasnothingt
OneofLondonZoo’srecentadvertisementscausedmesomeirritation,sopatentlydiditdistortreality.Headlined"Withoutzoos
Howwelookandhowweappeartoothersprobablyworriesusmorewhenareinourteensorearlytwentiesthanatanyothertime
A、Rhythmicalpatternsinliterature.B、Rhythminwriting.C、Therelationshipbetweenrhythmandgoodhealth.D、Theplaceofthe
随机试题
在7S管理模式中,属于硬管理要素的是()
举例说明审美效应中净化和领悟分别是怎样的?
社区获得性肺炎,最常见的致病菌是
下列关于设计总负责的表述有误的是()。
根据《中华人民共和国商标法》的规定,禁止作为商标注册但可以作为非注册商标或其他标志使用的有()。
党的政策是鼓励农村发展合作经济,允许农民专业合作社开展信用合作。()
根据《粮食流通管理条例》,国务院和地方人民政府应建立健全粮食()制度。
简述教师职业道德修养的策略。
足协官员:“与广大球迷一样,我们也迫切希望惩办那些收受贿赂的黑哨。但打击黑哨要靠真凭实据,不能靠猜测,否则很可能出现冤假错案。所以,有的人在没有证据的情况下,仅根据某些现象猜测某些裁判是黑哨是很不应该的。”以下哪项如果为真,会有力地削弱足协官员的论
Inthe1960sPopmusicunderwentarevolutionwhentheBeatlesbecameworldfamousandturnedtheirhometownof______intoaplac
最新回复
(
0
)