首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
For laymen ethnology is the most interesting of the biological sciences for the very reason that it concerns animals in their no
For laymen ethnology is the most interesting of the biological sciences for the very reason that it concerns animals in their no
admin
2013-01-15
70
问题
For laymen ethnology is the most interesting of the biological sciences for the very reason that it concerns animals in their normal activities and therefore,if we wish,we can assess the possible dangers and advantages in our own behavioral roots. Ethnology also is interesting methodologically because it combines in new ways very scrupulous field observations with experimentation in laboratories.
The field workers have had some handicaps in winning respect for themselves. For a long time they were considered as little better than amateur animal-watchers—certainly not scientists,since their facts were not gained by experimental procedures:they could not conform to the hard-and-fast rule that a problem set up and solved by one scientist must be tested by other scientists,under identical conditions and reaching identical results. Of course many situations in the lives of animals simply cannot be rehearsed and controlled in this way. The fall flocking of wild free birds can’t be,or the roving animals over long distances, or even
the details of spontaneous family relationships.
Since these never can be reproduced in a laboratory, they are then not worth knowing about?
The ethnologists who choose field work have got themselves out of this impasse by greatly refining, the techniques of observing. At the start of a project all the animals to be studied are live-trapped, marked individually,and released. Motion pictures,often in color, provide permanent records of their subsequent activities. Recording of the animals’ voices by electrical sound equipment is considered essential,and the most meticulous notes are kept of all that occurs. With this material other biologists,far from the scene,later can verify the reports. Moreover, two field observers often go out together,checking each other’s observations right there in the field.
Ethnology, the word,is derived from the Greek ethos,meaning the characteristic traits or features which distinguish a group-any particular group of people or,in biology,a group of animals such as a species. Ethnologists have the intention of studying "the whole sequence of acts which constitute an animal’s behavior."ln abridged dictionaries ethnology is sometimes defined simply as"the objective study of animal behavior, "and ethnologists do emphasize their wish to eliminate myths.
According to the explanation of the scientific rule of experiment in the passage, "hard-and-fast"means experiment procedures_____.
选项
A、are difficult and quick to follow
B、must be carried out in a strict and quick way
C、must be followed strictly to avoid false and loose results
D、hard and unreasonable for scientists to observe
答案
C
解析
词汇理解题。对"hard-and-fast"作出解释的语句是“a problem set up and solved by one scientist must be tested by other scientists,under identical conditions and reaching identical results.”,“must”和"identical"告诉我们试验程序必须是严格遵守,在特定的条件下得到特定的结果。因而,正确表达"hardand fast"的语句是选项C。故正确答案为C。
转载请注明原文地址:https://kaotiyun.com/show/Ko2O777K
0
考博英语
相关试题推荐
Thismattershouldnotbebushedup,butfreely______.
Ingeneral,theamountthatastudentspendsforhousingshouldbeheldtoone-fifthofthetotal______forlivingexpenses.
OnereasonforthesuccessesofAsianimmigrantsintheU.S.isthattheyhavetakengreat______toeducatetheirchildren.
TheperiodimmediatelyfollowingtheCivilWarwasatimeofgreathopeforBlacksinAmerica.Itwasalsoatimeofmomentous【2
Accordingtothebehaviorists,psychologistshavenoneedto______theexistenceofthemindorofanythingelsethatisnotob
Colorisveryimportanttomostanimalsforithelpsthemtogetalongintheworld.Color【21】tomakeananimaldifficultforit
Colorisveryimportanttomostanimalsforithelpsthemtogetalongintheworld.Color【21】tomakeananimaldifficultforit
Writeanessayinnolessthan200wordswiththefollowinginformation:Ifafive-yearoldchildcommitscrime,shouldhis
Theairline______mefortheamounttheyhadoverchargedme.
Beforethemid-nineteenthcentury,peopleintheUnitedStateeatmostfoodsonlyinseason.Drying,smoking,andsaltingcould
随机试题
简述面积注水的油田适用条件。
已知某土样的土粒相对密度ds=2.66,孔隙率n=50%,w=25%。取ρw=1.0g/cm3。试问:现将1m3土体加水至完全饱和,需加水(g)最接近下列()项。
在小组开始前,最好要进行开组前面谈,以更进一步了解报名的组员是否合适参与小组,以及了解每个组员对于小组的期望与参与小组的目的。这一做法主要是基于小组工作()的原则。
小鲸鱼说:“妈妈,我到您现在这么大时,您就31岁啦!”大鲸鱼说:“我像你这么大年龄时,你只有1岁。”请问小鲸鱼现在()岁?
外汇储备
设已知线性方程组Ax=b存在两个不同的解。(Ⅰ)求λ,a;(Ⅱ)求方程组Ax=b的通解。
设幂级数在(-∞,+∞)内收敛,其和函数y(x)满足y’’-2xy’-4y=0,y(0)=0,y’(0)=1。(Ⅰ)证明an=,n=0,1,2,…;(Ⅱ)求y(x)的表达式。
Notuntilthedaybeforeyesterday______togiveaspeechatthemeeting.
A、Becausehewantstovisither.B、BecausehewantstodiscusshersuggestionWithher.C、Becausehewantstoofferaproposal.
A、Fortyaweek.B、Thirtyaweek.C、Twentyaweek.D、Tenaweek.C
最新回复
(
0
)