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
80
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
【C9】
选项
答案
D
解析
转载请注明原文地址:https://kaotiyun.com/show/bNZ7777K
0
大学英语四级
相关试题推荐
Withtheworld’spopulationestimatedtogrowfromsixtoninebillionby2050,researchers,businessesandgovernmentsarealre
A、HewaslookeddownuponbyHuangYang.B、Hewasmurderedbyhisroommate.C、HeisapostgraduatestudentinFudanUniversity.
Directions:Itisverycommonthatmanyyoungpeopleholdseveralcreditcardstosolvetheirfinancialproblems.Thosepeoplew
随着生活水平的提高,保健品(healthcareproducts)日益受到中国人的喜爱。人们花费大量金钱来购买能量饮料、维生素药片和美容饮品。这些保健品宣称含有抗氧化物(antioxidants),能使人增强体质、延缓衰老。然而,最近有研究表明抗氧化物
A、Comparisonshopping.B、Consultingthetelephonenumber.C、Askingforproductservice.D、Askingtheplaceofaproduct.A本题考查对细
A、Theytendtoreproducemore.B、Theymayshowmoresignsofviolence.C、Theycaneatandsleepbetter.D、Theymaycommitsuicid
A、Higherthanonewholivesindullsurroundings.B、Lowerthanonewholivesinaboringenvironment.C、Thesameasonewholive
Ifapotentialcustomerenjoysyouradvert,theyaremorelikelytobuyyourproduct.It’sasimple【C1】______,butitisextrem
A、Helikeschangesinlife.B、Hewantsthebirdstoenjoymoremusic.C、Hetriestopreventtheparrotsimitatingthetone.D、He
A、Goldwasdiscoveredinthecity.B、Thecity’spopulationgrewtotwelvethousand.C、TheGoldenGateBridgewasconstructed.D、
随机试题
分析说明用人单位在劳动安全卫生基准中的权利义务。
已知某经济体的储蓄函数为S=-200+0.2Y。其中S为储蓄,Y为国民收入。投资为1000。问:均衡国民收入是多少?
厂址比选的主要内容有( )。
对世界银行来讲,项目完工报告应在()时准备,在贷款关账后()个月内完成。
每个投资者的无差异曲线形成密布整个平面且可以相交的曲线簇。()
借款人在偿还个人住房贷款时,贷款支付方式可以同时采取委托扣款和柜面还款两种方式。()
我从我的沙发上发现映在窗玻璃上的玫瑰色的_______,这使我非常惊异。在一色灰沉沉的天空上,东方涌现出玫瑰色的云彩,它与一切分隔开,孤零零地_______在那里,看起来像是一个微笑。我用目光_______这幅光辉灿烂的图画,把这幅图画的每一线霞光都吞咽下
在学业成败归因的三个维度中,与学生对自己学业成败的预期关系最密切的维度是()。(2013年)
下列属于社会生活的物质方面的现象是()
数据库的物理设计是为一个给定的逻辑结构选取一个适合应用环境的哪种结构,包括确定数据库在物理设备上的存储结构和存取方法?
最新回复
(
0
)