首页
登录
职称英语
Through a series of experiments an American scientist has obtained an underst
Through a series of experiments an American scientist has obtained an underst
游客
2025-01-09
39
管理
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. [br] It seems that smaller ants perform more of the _______.
选项
A、construction tasks
B、domestic tasks
C、defensive work
D、heavy work
答案
B
解析
根据本文第二段第一句“The making and care of the gardens and the nursing of the young ants are done by the smallest workers.”就可断定[B]为正确答案。
转载请注明原文地址:https://tihaiku.com/zcyy/3905496.html
相关试题推荐
______RiverflowsthroughNewYorkstateandintoNewYorkcity.A、TheMississip
Justas【1】______isfamousforthetango,soAmerican【1】______i
Justas【1】______isfamousforthetango,soAmerican【1】______i
Justas【1】______isfamousforthetango,soAmerican【1】______i
Justas【1】______isfamousforthetango,soAmerican【1】______i
AftertheAmericanRevolution,_____becamethefirstcapitaloftheUnitedStat
TheonlyAmericanpresidentelectedforathirdtermis____________.A、GeorgeWa
CommunicatingThroughInternetThehistoryoftheIn
CommunicatingThroughInternetThehistoryoftheIn
CommunicatingThroughInternetThehistoryoftheIn
随机试题
Hewasamanofnoble______.HecamefromanoldandprominentfamilyinVirgin
[originaltext]Wecontinueourdiscussionofplagiarism(剽窃).Lastweek,we
NEWYORK—Everysooften,lateatnight,DavidWoodlandstealsawaytothede
某项目设计生产能力为50万件产品,预计单位产品价格为100元,单位产品可变成本为
适用于物体表面和空气的简便灭菌方法是A.辐射灭菌法B.紫外线灭菌C.甲醛灭菌D.
2006年6月.时某打算成立一家装饰公司.向市某会计事务所申请验资。该会计事务所
(2018年真题)下列社会工作服务机构的领导方式中,属于“民主型”的是()。A.
三大经典风险调整收益衡量方法是()。 A.标准普尔指数B.詹森指数 C.
咸菜烧豆腐:有言在先( )。A.和尚打伞:无法无天 B.老鼠钻书箱:咬文嚼字
某项目2008年流动资产总额2366万元,其中货币资金920万元,应收账款340
最新回复
(
0
)