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
There is something intrinsically fascinating about the idea of evolutioa What principles govern the evolution of a species? And
There is something intrinsically fascinating about the idea of evolutioa What principles govern the evolution of a species? And
admin
2023-01-17
32
问题
There is something intrinsically fascinating about the idea of evolutioa What principles govern the evolution of a species? And what does evolution tell us about the place of Homosapiens in the grand order of things? The writer George Bernard Shaw held that a mystical guiding force impels life to evolve toward eventual perfection Modem scientists may not believe in this guiding force or in the possibility of perfection, but many would agree that life has been improving itself through evolution for billions of years. (Note that this conveniently makes Homosapiens, a very recent product of evolution, one of the newest and most improved versions of life.) In the view of these scientists, constant competition among species is the engine that drives the process of evolution and people’s life upward
To Darwin, nature was a surface covered with thousands of sharp wedges, all packed together and jostling for the same space. Those wedges that fared best moved toward the center of the surface, improving their position by knocking other wedges away with violent blows. The standard example that textbooks give of such competitive wedging is the interaction between the brachiopods and the clams. Clams were long held to be ancient undersea competitors of
brachiopods
due to the fact that the two species inhabited the same ecological niche. Clams are abundant today, whereas brachiopods (dominant in ancient times) are not. Modem clams are also physiologically more complex than brachiopods are. The standard interpretation of these facts is that the clams’ physiology was an evolutionary improvement that gave them the ability to "knock away" the brachiopods.
In recent years, however, the prominent naturalists Stephen Jay Gould and C. Brad Calloway have challenged the validity of this example as well as the model it was meant to support. Gould and Calloway found that over most geological time clams and brachiopods went their separate ways. Never did the population of brachiopods dip as that of the clams rose, or vice versa In fact, the two populations often grew simultaneously, which belies the notion that they were fighting fiercely over the same narrow turf and resources. That there are so many more clams than brachiopods today seems rather to be a consequence of mass deaths that occurred in the Permian period. Whatever caused the mass deaths—some scientists theorize that either there were massive ecological or geological changes, or a
comet
crashed down from the heavens—clams were simply able to weather the storm much better than brachiopods.
Out of these observations, Gould and Calloway drew a number of far-reaching conclusions. For instance, they suggested that direct competition between species was far less frequent than Darwin thought. Perhaps nature was really a very large surface on which there were very few wedges, and the wedges consequently did not bang incessantly against each other. Perhaps the problem facing these wedges was rather that the surface continually altered its shape, and they had to struggle independently to stay in a good position on the surface as it changed.
So where does that leave Homosapiens if evolution is a response to sudden, unpredictable and sweeping changes in the environment rather than the result of a perpetual struggle? No longer are we the kings of the mountain who clawed our way to the top by advancing beyond other species. We are instead those who looked to the mountains when floods began to rage below and then discovered that living high up has its definite advantages, so long as our mountain doesn’t decide to turn into a volcano.
It can be inferred from Gould and Calloway’s findings about clams and brachiopods that________.
选项
A、the two species never competed for the same turf
B、they fought fiercely for the same resources
C、clams had genetic ability to evade disasters
D、brachiopods were physiologically less complex than clams
答案
A
解析
根据第3段第4句“……他们为了争夺有限的地盘和资源而进行激烈斗争的这种说法是不成立的”,因此A项“这两个物种从没有为地盘进行竞争”正确。B项“蛤类和腕足类为了同一资源而进行激烈斗争”,与文意相悖,排除;C项“蛤类有躲避灾难的基因能力”,文中指没有提及避灾能力是否是天生的,排除;D项“腕足类在生理结构上没蛤类那么复杂”,这不是古和卡的发现,也排除。
转载请注明原文地址:https://kaotiyun.com/show/QNcD777K
本试题收录于:
CATTI二级笔译综合能力题库翻译专业资格(CATTI)分类
0
CATTI二级笔译综合能力
翻译专业资格(CATTI)
相关试题推荐
求函数z=的定义域.
Peoplehavespeculatedforcenturiesaboutafuturewithoutwork.Todayisnodifferent,withacademics,writers,andactivists
Americans’prideandfaithoftheireconomicsystem,【C1】________thatitprovidesopportunitiesforallcitizenstohavegoodliv
Itiscommonknowledgethathealthyfoodssuchasfruitsandvegetablescontaincertainnutrientsthatpromotegoodhealth—namel
Socialplatformslargeandsmallarestrugglingtokeeptheircommunitiessafefromhatespeech,extremistcontent,harassmenta
Forty-threepercentofAmericanssaytheyaretootiredtofunction.So,somemornings,youmighteven【C1】________stayinginbed
阅读以下说明,回答问题,将解答填入答题纸的对应栏内。【说明】信息安全是一个动态的变化过程,需要从管理和技术上不断地完善。案例:某企业的IT部门通过年度自查发现了一些问题和不足,为此提出了安全方面的改进计划。改进计划的部分内容描述如下所示。1.对新进
C语言程序的模块化是通过以下哪个选项实现的()。
使用VC++2010打开考生文件夹下blank1中的解决方案。此解决方案的项目中包含一个源程序文件blank1.c。在此程序中,函数fun()的功能是判定形参a所指的N×N(规定N为奇数)的矩阵是否是"幻方",若是,函数返回值为1;若不是,函数返回值为0。
「気のおけない人」とは、本来「気楽に付き合える人」という意味であるが、最近は「信用できない人」という意味で使うことが多い。それに________、言葉の変化の早さにはおどろくべきものがある。
随机试题
—Jimmy,whatareyouhidingyourback?Letmesee.—Itisakitty.Pleaseletmekeepit,Mum.Itisagoodkittyandwillnotb
项目所需进口材料、设备的利率价即CIF,其价格构成为
建造师经()后,才能以建造师的名义从事建设工程施工项目的管理工作。
在给会计赋予权限中,下列正确的是()。
下列关于金融资产重分类的表述中,正确的有()。(2010年)
长江全长6300千米,在世界江河中排名()。
人的价值就是指个人的价值。()
唐代彦惊的《后画录》中就记有“唐殷王府法曹王知慎:受业阎家,写生殆庶。用笔爽利,风采不凡”之句。这里的“写生”一词,则为写出鲜活之态、近乎与真人相差无几之意,“写生”是对人物肖像作品绘画能力的评价。《淮南子.原道训》中说“夫形者,生之舍也;气者,生之充也;
在森林中一旦遭遇火灾,下列做法不正确的是()。
有如下程序#includeusingnamespacestd;classBase{protected:Base(){cout
最新回复
(
0
)