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 de
Researchers have identified 1.4 million animal species so far—and millions remain to be discovered, named, and scientifically de
admin
2019-04-27
99
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【C1】______every animal on Earth? A pair of Brazilian scientists has crunched (大量运算) the numbers and【C2】______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【C3】______price to pay to understand the creatures that【C4】______such essentials as agriculture, fisheries, new drugs, and energy sources, says ornithologist (鸟类专家) 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【C5】______and climate change looming, the【C6】______to document the planet’s biodiversity—or biota (生物区)—is urgent,【C7】______considering the essential role these life forms play in crop pollination, clean air, and other aspects of human【C8】______"We are losing species by extinction faster than
we are describing new species" according to some estimates, says biologist Antonio Marques, who【C9】______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【C10】______to a complete understanding of the animal kingdom is a global shortage of taxonomists (分类专家), experts say.
A) attempt F) effort K) obstacle
B) cheaper G) enable L) small
C) classify H) especially M) soaring
D) coauthored I) exactly N) well-being
E) come J) identify O) yet
【C3】
选项
答案
L
解析
转载请注明原文地址:https://kaotiyun.com/show/2NZ7777K
0
大学英语四级
相关试题推荐
天安门广场(TiananmenSquare)位于北京市中心,是世界上最大的广场。整个广场东西宽500米,南北长880米,总面积达44万平方米。矗立在广场中央的人民英雄纪念碑(MonumenttothePeople’sHeroes)是新中国诞生后在
A、ParentsinBritainaretoogenerous.B、ParentsinBritainmakemoremoney.C、ParentsinBritainlovetheirchildrentoomuch.
A、Avoideatinganyfood.B、PreparetherighttypeofpietoeatC、Washhishandsthoroughly.D、Practiceeatingapiequickly.A题
A、Thedangeroustwistsandturnsalongthecourse.B、ThechangeableweatherinasingledayinNorthGermany.C、Thepreparation
7SecretTestsofAttractionA)You’reasmart,attractiveperson.Soyouwouldn’tbesurprisedifoneofyourfriendsgottheh
A、Itdidn’tdoenoughtocelebratethe100thanniversaryofWWI.B、ItshowedlittlerespecttootherEuropeancountries.C、Itte
Unemployment-insurance(UI)benefitsfirstpassedin2008andextendedseveraltimes.America’sgovernmenthasenactedsuchmeas
Thereisapopularbeliefamongparentsthatschoolsarenolongerinterestedinspelling.Thisis,however,a【C1】______.Nosch
ThingsYouCan’tSayinCanadaA)Attackingoursacredcows(thingsorpeoplethatcannotbecriticized)mayturnyouintoo
随机试题
酶活性极低,但不变性的温度是酶变性且已不可逆使酶失活的温度是
I公司不断增加广告投入,提高客户服务水平属于()。I公司兼并多个品牌电脑制造厂和电脑经销商的行为属于:()。
可行性研究的核心内容是( )。
对施工过程的质量监控,必须以( )为基础。
经返修或加固处理的工程,虽局部尺寸等不符合设计要求,但仍然能满足使用要求,可()。
玉苍山又称八面山,位于浙江苍南县,系南雁荡山别支。()被称为玉苍山“三绝”。
一项工程甲、乙、丙三队合做,先由甲、乙两队合做4天后,余下由丙队单独做8天完成,若乙队单独做15天完成,丙队单独做20天完成,求甲队独做几天能完成?()
新华网消息:印度尼西亚副总统卡拉28日透露,地震和海啸造成的该国死亡人数可能高达2.5万人。此前统计的印尼死亡人数为近5000人。负责政府救援工作的卡拉当天对印尼媒体说:“目前还没有准确的统计数字,但是我估计死亡人数在2.1万到2.5万之间。”卡拉还估计,
Aslongasherparentscanremember,13-year-oldKatieHarthasbeentalkingaboutgoingtocollege.Hermother,Tally,afinanc
A.risenB.smoothC.friendlyD.exceedingE.rapidF.varyG.expensiveH.sudden
最新回复
(
0
)