首页
登录
职称英语
Through a series of experiments, an American scientist has obtained an under
Through a series of experiments, an American scientist has obtained an under
游客
2023-07-27
65
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 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. [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
细节题。本题问的是:小个蚂蚁似乎更多地从事一些______。依据文章第2段“The making and care of the gardens and the nursing of file young ants are done by file 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" 可知,最小的蚂蚁负责照管园地和看护幼蚁,较大的蚂蚁负责弄碎树叶和清理巢穴,再大些的蚂蚁负责建筑和从外面搬运树叶进巢穴,最大的蚂蚁负责保卫巢穴。由此可见,选项B 为正确答案。
转载请注明原文地址:http://tihaiku.com/zcyy/2873049.html
相关试题推荐
OneafternoonjustbeforeChristmas,anoldgentlemanwas【B1】______throught
OneafternoonjustbeforeChristmas,anoldgentlemanwas【B1】______throught
Droughtoccurswhenmoisturesdisappearthroughevaporationfasterthaniti
Droughtoccurswhenmoisturesdisappearthroughevaporationfasterthaniti
Droughtoccurswhenmoisturesdisappearthroughevaporationfasterthaniti
Droughtoccurswhenmoisturesdisappearthroughevaporationfasterthaniti
[originaltext]DeepSpringsisanAmericancollege.Itisanunusualcollege
Bycontrast,Americanmothersweremorelikely____________(把孩子的成功归因于)naturalta
Americanshavebeen______(大量向南部和西部地区移居)sinceWorldWarⅡ,andthepatternstil
WilliamHenryGatesisAmericanbusinessexecutive,whoservesaschairmana
随机试题
Whilelongwalksaregreat,campingforseveraldaysisabetter,more【C1】__
【S1】[br]【S10】D该空格前为形容词common,空格后为介词of,因此填入空格处的应为名词。该句意为“我很愿意相信,这对于我们每个人来说都是个整体
中枢下丘脑性尿崩症需要加压素治疗,从药物作用时间、给药途径和副作用等方面考虑,首
某股票看涨期权(A)执行价格和权利金分别为60港元和4.53港元。该股票看跌期权
根据《测绘技术设计规定》,下列内容中,属于测绘技术设计应遵循的基本原则的是A.
工业产权:是指法律规定对应用于生产和流通中创造发明和显著标记等智力成果在一定期限
当交易所涨跌停板制度、交割制度发生变化时,套利行为同样受到影响。()
(2017年真题)根据《行政许可法》规定,下列文件中,可以设定行政许可的
下列各项中,会引起资产与权益同时增加的有()。A.从银行提取现金备用 B
自动焊接机(ε=100%)单相380V,46kW,cosψ=0.60,换算其等效
最新回复
(
0
)