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
2010-05-26
51
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 ant 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 run 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 ant were not ideally suited to the particular jobs they performed.
The organization of the ants has the effect of______.
选项
A、getting the most work done
B、dividing the work up systematically
C、each ant helping with all the tasks
D、each ant doing what it can do best
答案
B
解析
推断题。本题问的是:蚂蚁的劳动编制能起到的作用是______。依据科学家得出的结论:蚂蚁按个头大小分配工作的劳动编制有时并不能得到最大的劳动效率,因此这种劳动编制只是有条理地把工作分配到各个蚂蚁。故选B 。
转载请注明原文地址:https://kaotiyun.com/show/bhV7777K
0
大学英语四级
相关试题推荐
Ihadtoruntokeepupwithhim。此题主要考查结果状语从句的用法。
MostAmericansenjoymovingfromplacetoplaceveryoften.Insomestatesonlyonehouse【C1】______fivehaspeoplelivinginit
MostAmericansenjoymovingfromplacetoplaceveryoften.Insomestatesonlyonehouse【C1】______fivehaspeoplelivinginit
Sleepispartofaperson’sdailyactivitycycle.Thereareseveraldifferentstagesofsleep,andtheytoo【B1】______incycles.
Technologyisanothergreatforceforchange.Inpart,technologyhascausedthepopulationexplosion;manyofuswon’tnowbea
A、Inaconferenceroom.B、Inafactory.C、Onboardaship.D、Inahospital.A对话中的女士在对主席发言,主席先生请她详细阐述一下她所说的问题,说明他们是在开会,答案当然应当选会议室
A、Ridemoresafelyinthefuture.B、Nottopanicsincetheyarenotseriousinjuries.C、Gotoseeadoctor.D、Buyanewbike.C
A、Toseesomerelatives.B、Tobuysometoys.C、Tosightsee.D、Togototheseashore.C对话中谈到她去芝加哥,而且打算住在Sue的父母家,文中也直接提到spendSat
A、Buyare-charger.B、Buysomebatteries.C、Buythedictionaryfromher;D、Usehersforawhile.C本题和买电子字典有关,当W说自己想处理自己的字典时,意思是建
随机试题
驾驶机动车在这种情况下怎样做?
A.持续吸入高浓度的矽尘,1~2年内发生的矽肺B.持续吸入高浓度的矽尘,5年内发生的矽肺C.吸入矽尘期间未发病,脱离矽尘作业后若干年才发生矽肺D.吸入矽尘20年以上发生的矽肺E.吸入矽尘10年以上发生的矽肺
A.皮下气肿B.胸骨压痛C.吸气时肋间隙回缩D.上腔静脉阻塞E.肋间隙膨隆白血病可见
函数f(x)=ax(a>0,a≠1)的麦克劳林展开式中的前三项是()。
一般来说,内部激励()。
每年夏季,下图示区域内自南向北年降水量由约200mm增至500mm左右,沙漠地区年降水量仅50mm左右。据此回答问题。图中甲地区夏季降水量最接近()。
请认真阅读下列材料,并按要求作答。请根据上述材料完成下列任务:依据拟定的教学目标,结合该歌曲的学习,设计“节拍练习”的教学环节并说明理由。
由于风的磨蚀作用,一些小山包的下部往往遭受较强的剥蚀作用,并逐渐形成向里凹的形态。如果小山包上部的岩层比较松散,在重力作用下就容易垮塌形成陡壁,形成一种独特的地貌形态。我们称之为()。
某研究者以实习教师的身份到一所学校授课,与学生和其他教师一起生活,了解其教育现状,这是一种()
有如下两个类定义:classXX{private:doublex1;protected:doublex2;public:
最新回复
(
0
)