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
2020-02-09
8
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
【C8】
选项
答案
N
解析
转载请注明原文地址:https://kaotiyun.com/show/ofp7777K
0
大学英语四级
相关试题推荐
A、1/5ofadultssmokeintheUK.B、2/3ofsmokersgetbreathingdiseases.C、10millionofthemarereluctanttoquitsmoking.D、
Keepingafullsocialcalendarmayhelpprotectyoufromdementia(痴呆症),researcherssaidonMonday.【C1】______activepeople
Forcenturies,inthecountriesofsouthandSoutheastAsiatheelephanthasbeenanintimatepartoftheculture,economyandr
SevenWaystoCreateaHappyHouseholdA)Everyfamilyisdifferent,withdifferentpersonalities,customs,andwaysofthin
A"memorypill"thatcouldaidexamrevisionandhelptopreventpeopleforgettingimportantanniversariesmaysoonbeavailable
A"memorypill"thatcouldaidexamrevisionandhelptopreventpeopleforgettingimportantanniversariesmaysoonbeavailable
A、Atthebeginningofthe17thcentury.B、Attheendofthe20thcentury.C、Attheendofthe17thcentury.D、Atthebeginningo
A、Mothersanddaughtersalwayshavequarrelswitheachother.B、Someteenagersdon’tknowthereallife.C、Girlsthinkoffashio
YoungpeopleintheUnitedStatesarefallingbehindtheiroverseaspeersinreading,mathandscience,PresidentBarackObamas
A、StudythemapofQuebecProvince.B、FindmoreaboutQuebecCity.C、BrushuponherFrench.D、Learnmoreaboutthelocalcustom
随机试题
A.脾切除B.肾上腺皮质激素C.输血D.环磷酰胺E.骨髓移植
根据《建筑法》规定,下列说法错误的有( )。
在大规模的道路工程中常会遇到软土路基,常用的处理方法有( )等。
收人是指企业在销售商品、提供劳务等日常活动中所形成的经济利益的总流人,在我国收入来源不包括()。
下列说法正确的有()。
人们面对众多可以满足自己需要的产品,选择的主要依据是()。
把下面9个图形分为三类,使每一类图形都有共同特征或规律,分类正确的一项是()。
谈谈你的缺点。
第一个阳光照相机的发明人是()。
世纪之交的宝贵机遇和巨大挑战将青年推到了历史前台。(attheturnofthecentury)
最新回复
(
0
)