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
10
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] 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://tihaiku.com/zcyy/3290938.html
相关试题推荐
Theneuroscientistdidastudyinordertotellwhetherchildrenwillfeelthep
Theneuroscientistdidastudyinordertotellwhetherchildrenwillfeelthep
Theneuroscientistdidastudyinordertotellwhetherchildrenwillfeelthep
Passage1[originaltext]AsforusAmericans,youmaythinkthatwegivetoo
ThepurposeoftheAmericancourtsystemistoprotecttherightsofthepeo
ThepurposeoftheAmericancourtsystemistoprotecttherightsofthepeo
ThepurposeoftheAmericancourtsystemistoprotecttherightsofthepeo
ThepurposeoftheAmericancourtsystemistoprotecttherightsofthepeo
[originaltext]M:MissGrace,I’mgladthatyou’vemadeitthroughthatheavysn
[originaltext]M:MissGrace,I’mgladthatyou’vemadeitthroughthatheavysn
随机试题
RaisingWiseConsumersAlmostanyonewithaprofitmo
Julie:Hi,Mary,Iknowyou’reanexpertinskincare.Mary:Well,Iwouldn’ts
[originaltext]Howareyoupettingalong?[/originaltext][originaltext]Goodeven
论述我国《著作权法》规定的著作权内容?
Turner综合征的表现特征不包括A.身材矮小,但智能发育基本正常 B.身材矮
关于卵巢交界性浆液性囊腺瘤,哪项描述是错误的A.多为双侧中等大小 B.较少乳头
下列不属于宏观经济影响股票价格的特点的是()。A:波及范围广 B:干扰程度浅
兼补肝、肾之阴的药物是( )。A.鳖甲 B.石斛 C.百合 D.北沙参
2017年1~4月,S市对欧盟进出口总值为802.6亿元人民币,比去年同期(下同
关于病原体,下列说法错误的是( )。A、病原体是指能引起疾病的微生物的统称
最新回复
(
0
)