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
41
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
【S6】
选项
答案
D
解析
名词辨析题。空格前为定冠词the,因此空格处应该填入名词。根据上下文及本句句意,对地球上的生物种类进行备份并不是轻而易举的事,需要一番努力,故effort“努力;精力”符合句意。
转载请注明原文地址:https://kaotiyun.com/show/Kff7777K
0
大学英语四级
相关试题推荐
Manyteachersbelievethattheresponsibilitiesforlearningliewiththestudents.Ifalongreadingassignmentisgiven,instr
A、Ajigsaw.B、Writingaletter.C、Readinganewspaperormagazine.D、Checkingheremail.A此题考查听细节的能力。考生可使用排除法做出选择。首先,考生必须抓住Iju
GeorgeWashingtonCarvershowedthatplantlifewasmorethanjustfoodforanimalsandhumans.Carver’sfirststepwasto【S1】__
GoingonlineisafavoritepastimeformillionsofAmericanchildren.Almost10million(14percent)ofAmerica’s69millionchi
A、InDakota.B、InNewYork.C、InLondon.D、InHawaii.B判断题。本文介绍披头士(甲壳虫)合唱队歌手Lennon遇刺案。从选项可预测本题考的是地点,所以听短文时对于选项所示地点的信息要一一记录。家住在D
Thelongyearsoffoodshortageinthiscountryhavesuddenlygivenwaytoapparentabundance.Storesandshopsarechokedwith
A、Itisweird.B、Itisexhausting.C、Itisconvenient.D、Itiscomfortable.C如果交通顺利,女士回家只要花半小时在路途上,而男士花一个小时都不一定行。所以男士感慨万千,非常羡慕。
A、agroupofpeopleshehasnevermetbefore.B、agroupofpeopleshehasmetbefore.C、agroupofyoung,juniorpeople.D、agro
FirstAidThemainpurposeoffirstaidistoprovidepropercaretosuddenlyillorinjuredpersonsuntilmedicalhelpbeco
A、Theywereafraidoflosingface.B、Theywerewillingtostaytogether.C、Theywantedtogoagainstthetrend.D、Theyfearedth
随机试题
杆形卡环与圆环形卡环相比较,主要不足之处是
A.停用洋地黄制剂,加用钾盐B.停用洋地黄制剂,加用苯妥英钠C.停用洋地黄制剂,加用阿托品D.继续使用洋地黄治疗E.停用洋地黄制剂,观察病情心力衰竭,窦性心律,心率126次/分,用洋地黄治疗中,心率仍在120次/分以上,律齐,且仍有痰中带血,应
若想降低盈亏平衡产量,下列措施不正确的是( )。
关于会计账簿与账户的关系,下列说法错误的是()。
下列各项中,应填列在现金流量表中“投资活动产生的现金流量”项目的是()。
下列有关信息技术一般控制的说法中,错误的是()。
下列有关在植物体的细胞中,葡萄糖分解为丙酮酸的反应,不正确的是()。
soundpullcanfeeleatDoctor:What’swrongwithyou?Emma:Oh,Ihaveatoothachenow.Doctor:Howlonghaveyou
在社会主义市场经济条件下,按劳分配是以()。
下列关于总体的界定表述错误的是
最新回复
(
0
)