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
Researchers have identified 1. 4 million animal species so far—and millions remain to be discovered, named, and scientifically d
Researchers have identified 1. 4 million animal species so far—and millions remain to be discovered, named, and scientifically d
admin
2012-05-17
87
问题
Researchers have identified 1. 4 million animal species so far—and millions remain to be discovered, named, and scientifically described. So how much would it actually cost to【S1】______every animal on Earth? A pair of Brazilian scientists has crunched (详细计算) the numbers and【S2】______up with an answer: $263 billion.
That’s way more than the $ 5 billion that famed Harvard University biologist Edward O. Wilson estimated back in 2000—and that was for every species on Earth, not just animals. But even $ 263 billion would be a【S3】______price to pay to understand the creatures that【S4】______such essentials as agriculture, fisheries, new drugs, and energy sources, says ornithologist (鸟类学家) Joel Cracraft of the American Museum of Natural History in New York City. "Literally, the world economy runs on biodiversity," he says. "People don’t understand really, deeply how much we depend on biodiversity."
Most biologists agree that with extinction rates【S5】______and climate change looming, the【S6】______to document the planet’s biodiversity—or biota (生物区)—is urgent,【S7】______considering the essential role these life forms play in crop pollination, clean air, and other aspects of human【S8】______"We are losing species by extinction faster than we are describing new species" according to some estimates, says biologist Antonio Marques, who【S9】______the new paper with Fernando Carbayo, both at the University of St. Paulo in Brazil. "We have to know the biota to preserve and conserve the biota," he says.
Besides the money, another huge【S10】______to a complete understanding of the animal kingdom is a global shortage of taxonomists (分类学家), experts say.
A) obstacle F) cheaper K) attempt
B) classify G) enable L) coauthored
C) especially H) come M) soaring
D) effort I) small N) well-being
E) identify J) exactly O) yet
【S1】
选项
答案
E
解析
动词辨析题。空格前面为动词不定式符号to。而空格后为名词短语,说明此处需填动词。文章第一句说研究人员已经确定了很多种动物种类,但仍有成千上万的种类等待被发现。所以第二句承接前一句的意思.问到要识别这些动物种类需要花费多少钱。因此动词identify“识别;确定”符合题意。
转载请注明原文地址:https://kaotiyun.com/show/E5f7777K
0
大学英语四级
相关试题推荐
Ifeveryouarecalled【C1】______tointroduceaspeaker;itwouldbewellforyoutobearin【C2】______thatyouhavearesponsibil
GeorgeWashingtonCarvershowedthatplantlifewasmorethanjustfoodforanimalsandhumans.Carver’sfirststepwasto【S1】__
It’sanage-old【B1】______:MenarefromMars;WomenarefromVenus.Malesandfemalesshowdifferentbehaviorsalmostfrom【B2】__
A、hereallymissedhim.B、hecriedalot.C、hedidn’tcare.D、hisgrandfatherdidn’tdie.A此题考查听细节的能力。Hekepthimselfbusysot
ShoppinghabitsintheUnitedStateshavechangedgreatlyinthelastquarterofthe20thcentury.【C1】______inthe1900smostAm
A、Becausehesetasmanyassixty-fivedifferentrecords.B、Becauseheledhisteamtomanychampionships.C、Becausehestillpl
Exerciseisgoodforyou,butmostpeoplereallyknowvery【C1】______abouthowtoexerciseproperly.Sowhenyoutry,youcanrun
Asubjectwhichseemstohavebeeninsufficientlystudiedbydoctorsandpsychologistsistheinfluenceofgeographyandclimate
Wecommonlythinkofsportsmanshipinconnectionwithathleticcontests,butitalsoappliestoindividualoutdoorsports.Note
Classifiedadvertisingisthatadvertisingwhichisgroupedincertainsectionsofthepaperandisthusdistinguishedfromdisp
随机试题
水肿患者进食蛋白质应选用
凡人民法院对在中华人民共和国领域内没有住所的当事人送达诉讼文书,可采用的下列方式中错误的是:()。
铁路重力式挡土墙地基为节理不发育的岩石地基时,墙身所受浮力按()计算。
一建筑物室外地面至顶部屋面高度为23m,顶部屋面面积为200m2,有局部突出屋顶的若干辅助用房,该辅助用房高度为2m,面积为60m2,按照国家消防工程技术标准规定,该建筑物的高度为()。
下列各项存款中,不在“其他货币资金"科目中核算的是()。
试论述教育的基本要素及它们之间的关系。
两种知识学习之间相互干扰、阻碍,如汉语拼音学习干扰英语音标学习,称为()。
对象串行化可以很容易地扩展成支持java对象的【】,它提供了对象从流中重建的补充方式。
下列条件语句中,功能与其他语句不同的是______。
日本語は一つ単語の中にアクセントの高点が一つしかない。また、「高低低」、「低高高……」のように、単語の最初から、高の場合次はかならず低になり、逆に最初は低の時、2番目は高にならなければならない。つまり、「高高低」、あるいは「低低高……」のように、単語の頭か
最新回复
(
0
)