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
2017-04-28
36
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(详细计算)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(分类学家), 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/P0i7777K
0
大学英语四级
相关试题推荐
气功是中国的一种非常神奇的调节身心的锻炼方式,由于长期以来与宗教之间的联系密切,被蒙上了神秘的色彩。与中国功夫一样,气功有着悠久的历史,广为流传。气功的发展大约有4000~5000年的历史。据说,早期的气功是一种用于治疗肢体功能障碍的舞蹈。自中华人民共
Somepeopleborrowmoneyand"forget"topayitback.Largeloansareseldomtheissue:theyareusuallytreatedasbusiness
ItisalwaysatoughtasktodecideontheperfectgiftforyourperfectmomonaMother’sDay.Tooffer【B1】______toyourproble
A、Thewomanisexcitedtohavelunchwiththeman.B、Thewomanhasappointmentwithsomeoneelse.C、Thewomanthinksthemandid
Duringthenineteenthcentury,whenlittlewasknownaboutenvironmental-ismandconservation,itwascommontohearpeopleinE
A、ItisorganizedbyScotland’sgovernment.B、Itstrengthensfriendshipsamongnations..C、Itmaybethegreatestculturalfesti
Howdoesfoodaffectmoodandmind?Theanswermaylieinthechemistryofthebrainandnervoussystem.Moleculescalledneurot
A、Atteno’clock.B、MondaythroughFridayfrom4to6a.m.C、From4to6p.m.atworkday.D、From4to6p.m.atweekend.D细节题。题目
A、Theyproducethesameyieldindifferentlocations.B、TheyaresuitabletogrowonlyintheUnitedStates.C、Theyproducebett
随机试题
杠杆租赁
FromMondayuntilFridaymostpeoplearebusyworkingorstudying,butintheeveningsandonweekendstheyarefreeandenjoy
伴有糖尿病的水肿病人,不宜选用
李某为一有限合伙企业中的有限合伙人,根据新颁布的《合伙企业法》的规定,李某的下列行为中,不符合法律规定的是( )。
求助者中心疗法认为心理失调产生的原因是()。
阅读材料,回答有关问题。地理必修I第二章“自然环境中的物质运动和能量交换”.第二节“地球表面形态”内容如下:一、不断变化的地表形态二、内力作用与地表形态(一)板块运动与宏观地形(二)地质构造与地表形态(三)火山、地震活动和地表形态三、外力作用
Beta可用以测度()。[中山大学2014金融硕士]
TheChinesehaveusedamethodcalledacupuncture(针炙)toperformoperationsforabout4,000yearswithoutputtingthepatientto
Thefirstparagraphisintendedto______.Paragraphs2and3explain______.
A、Writingpapersforhisclasses.B、Preparingforthecomingexaminthelibrary.C、Doingextraworkinthechemistrylab.D、Wor
最新回复
(
0
)