首页
登录
职称英语
Public opinion is still largely unaware of or indifferent to the need to pre
Public opinion is still largely unaware of or indifferent to the need to pre
游客
2023-09-11
65
管理
问题
Public opinion is still largely unaware of or indifferent to the need to preserve rare species, whether for cultural or for scientific reasons. Some people indeed are actively hostile. Species have been dying out since life began, they argue, and have continuously been replaced by new species. Why, therefore, should we interfere with the process? Let us abandon to their fate the great Indian rhinoceros, the Arabian ostrich, the Tasmanian wolf, and all those other animals that cannot adapt themselves to the modern world. Others will arise to take their place.
But, of course, this argument has got its time-scale all wrong, It would take millions of years to evolve a set of new species to replace those we are now losing. In the meantime the world is filling up with the hardy and adaptable pests, rats and rabbits, starlings and house sparrows. The cultural argument for preserving wild life, that it is part of our natural heritage, argues itself, except to those who are blind to cultural values anyway, what is less obvious and more in need of explanation is the scientific case for preventing the extirpation of rare species.
In these days of torrential achievement in the physical sciences we are apt to forget that it is possible only because most of the basic thinking in the sciences has already been done. The seed has been sown and the fruit is now being harvested. Could that basic thinking have been brought to so triumphant a conclusion so early if the raw material, the fundamental physical phenomena, had been subjected to the sort of erosion and extinction that today constantly threatens the raw material of the biological sciences? Supposing the world stock of radium had gone the way of the dodo and the great auk by 1850. Who at that early date could have put up a sound argument in favor of conserving it if it had been known and in danger of destruction?
It is just this danger which now confronts the biological sciences, whose basic thinking is by no means yet done, but which hold the key to man’s achievement of a satisfactory mastery over both his nature and his nurture in the coming centuries. Animal and plants species are natural experiments in genetics and adaptation to environment that have taken millions of years to work out. Research as we may with fruit-flies, we can never catch up with nature. We have not the time. Is it not therefore folly to allow our vital experimental material to vanish through carelessness? [br] The raw material of the biological sciences has been subjected to ______.
选项
答案
erosion and extinction
解析
文章末段提到生物学正面对这样的危险(It is just this danger which now confronts the biological sciences),指示代词“this”回指到上一段。上一段中“threaten”点出了危险所在:“threaten”所在的定语从句的先行词就是答案。答题时一定要删掉“the sort of”,不然就文不对题了。这题有相当难度。
转载请注明原文地址:http://tihaiku.com/zcyy/3004837.html
相关试题推荐
Thegeneralpublic,however,likestheidea:【B1】______favoredwiderissuing
Thegeneralpublic,however,likestheidea:【B1】______favoredwiderissuing
Thegeneralpublic,however,likestheidea:【B1】______favoredwiderissuing
Thegeneralpublic,however,likestheidea:【B1】______favoredwiderissuing
Thegeneralpublic,however,likestheidea:【B1】______favoredwiderissuing
Thegeneralpublic,however,likestheidea:【B1】______favoredwiderissuing
Iamsurprisedtoknow____________(我的观点的他的观点巧合).myopinioncoincideswithhis
Opinionpollsarenowbeginningtoshowanunwillinggeneralagreementthat,
Opinionpollsarenowbeginningtoshowanunwillinggeneralagreementthat,
WhenitcomestopubliceducationintheUnitedStates,freemarketsandfle
随机试题
Ican’treadthemarksandnotesJimmadeinthemargin.Theyaretoo______.A、fa
ItiscommonlybelievedthatintheUnitedStatesschooliswherepeopleget
[originaltext]M:Ithinkyou’dbetterfindanotherpersontobeyourbadminton
Aboutacenturyago,theSwedishphysicalscientistArrheniusproposedalow
AccordingtoAlanGreenspan,whichpartofthemarketcouldspreadtoothersect
Anepidemicofswineflu(猪流感)hasrecentlydevelopedinMexicoandtheUnit
使用探测仪时,应测定并计算仪器的总改正数。总改正数为()改正数的代数和。A.水
民事法律关系根据义务主体的范围,可分为()。A、保护性民事法律关系B、权利性民
为了形成有助于降低风险的新型人才队伍调节机制,企业在人才管理方面可以采取的做法是
关于女性生器的血管供应,以下哪项错误? A.卵巢动脉来自髂总动脉(左侧可来自左
最新回复
(
0
)