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
2023-12-20
8
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] In what way are the ants different from other non-human societies?
选项
A、They do not need to search for food.
B、They do not need to look for shelter.
C、Individuals vary in social status.
D、Individuals perform different functions.
答案
D
解析
根据本文第一段第二句话到段末“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 rcquiring consider able 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”,可看出[D]为正确答案。
转载请注明原文地址:https://tihaiku.com/zcyy/3290935.html
相关试题推荐
Passage1[originaltext]OneofthemostsignificantfeaturesoftheAmerican
ThepurposeoftheAmericancourtsystemistoprotecttherightsofthepeo
ThepurposeoftheAmericancourtsystemistoprotecttherightsofthepeo
[originaltext]M:MissGrace,I’mgladthatyou’vemadeitthroughthatheavysn
[originaltext]M:MissGrace,I’mgladthatyou’vemadeitthroughthatheavysn
[originaltext]MostAmericanworkers,especiallythoseinprofessionaloccup
Wearenotwhowethinkweare.TheAmericanself-imageissuffusedwith
Wearenotwhowethinkweare.TheAmericanself-imageissuffusedwith
Wearenotwhowethinkweare.TheAmericanself-imageissuffusedwith
Wearenotwhowethinkweare.TheAmericanself-imageissuffusedwith
随机试题
Manytheoriesconcerningthecausesofjuveniledelinquency(crimescommitte
Thelasttwotornadoseasonshavebeenthedeadliestinadecade,with206
【B1】[br]【B3】[originaltext]Thingshavechangedinyourlife.Mostnotably,
编辑加工题:阅读分析短稿,并按照稿件加工整理的规范进行编辑加工。(本题18分)
所开具的处方须经所在执业地点执业医师签字或加盖专用签章后有效的是A.进修医师
下列单位或者个人中,一般不是物业管理招标主体的是()。A.物业建设单位
现代中国大学生求职的压力越来越大,到毕业找工作的时候,很多同学都会有失落的感觉和
不属于商业银行主要风险的是()。A.信用风险 B.操作风险 C.市场风险
互换是指两个或两个以上的当事人依据预先约定的规则,在未来的一段时间内,互相交换某
某进口设备按人民币计算,离岸价为2000万元,到岸价为2100万元,银行手续费为
最新回复
(
0
)