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
69
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
Davidwon’tbehomeuntilnextmonth.Oh,I______toosoon--hereheisnow!A、wi
The__________offorgedbanknotesposedathreattoournormaleconomiclife.A、
Usingapublictelephonemaywellbeoneof【C1】______oflife,demandingpatie
经筋的生理功能是()A.主蓄积渗灌气血 B.主联络机体内外 C.主
根据《中华人民共和国公司法》和《中华人民共和国证券法》的规定,以超过票面金额的价
Thechangeinthatvillagewasmiraculou
从供应链整体角度看,多层级库存的需求特征是()。A.从最起始客户越往下游;每一
我国心理学界通常认为,用()来建立心智活动的实践模式需要经过的步骤为创
A.阴道外出血量和贫血程度不一致伴腹痛 B.阴道流血性黏液 C.无痛性反复阴
下列关于收入类账户,表述正确的有()。A、本期的增加发生额记入账户的借方 B、
最新回复
(
0
)