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
63
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
【C2】
选项
答案
E
解析
转载请注明原文地址:https://kaotiyun.com/show/t0i7777K
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
中国的音乐发展史源远流长。据历史记载,最早的乐器——陶埙(Taoxun)距今已有6000多年,最早的官方音乐机构——乐府出现在2000多年前,传世的最早一张古琴谱的创作年代距今约有1500年。音乐无国界,优美的旋律让世界相连。2011年,李云迪推出了
Somepeopleborrowmoneyand"forget"topayitback.Largeloansareseldomtheissue:theyareusuallytreatedasbusiness
A、Theyarecrazypeople.B、Theycan’thelpthemselves.C、Theyhavebadpersonality.D、Theyarenotlovedbytheirfamily.B
A、Drinkingtoomanysoftdrinksisharmful.B、Childrenshouldnotdrinksoda.C、Mothersaretoblameforsoftdrinkproblems.D、
A、Makingphonecallstoafriend.B、Campinginthecountryside.C、Touringinawonderfulcity.D、Discussingaweekendplan.B女士说
A、Havingregularmorningmeetings.B、Goingshoppingwithhiswife.C、Havingeveningdinnerathome.D、Havinginterviewwithjour
A、Howlistenersindifferentculturesshowrespect.B、Howspeakerscanwinapprovalfromtheaudience.C、Howspeakerscanmisund
A、HelikesSwedenbetterthanEngland.B、Heprefershotweathertocoldweather.C、HeisanEnglishmanlivinginSweden.D、Hevi
A、Itwascreatedmainlyforscientificresearch.B、Itworksbetterinfineweatherconditions.C、Itmustbelocatedonatleast
随机试题
金边债券的特点是()
碳酸氢钠溶液煮沸灭菌时,其煮沸时间一般
A公司为一上市公司。2013年1月1日,公司向其100名管理人员每人授予100份股票期权,这些职员从2013年1月1日起在该公司连续服务3年,即可以5元每股购买100股A公司股票,从而获益。公司估计该期权在授予日的公允价值为30元。至2015年12月31日
某公司以服装加工为主要业务,根据市场行情和自身情况,年初该公司决定实行成本领先的战略。人力资源部在各项工作中贯彻组织的战略,职位设计时,在一个职位的工作内容包括范围非常狭窄的简单的工作任务,员工完成这些任务所要求的技能范围非常有限。人员招募和甄选时,工作开
外汇既包括外国货币,也包括外币有价证券。()
铁路运输中,整车或整批托运时,对轻浮货物体积限定为三个标准:60立方米、95立方米、125立方米。()
简述制定具体人力资源管理制度的程序。
“没有动手做”而应用探究方法的探究是()。
以下不属于影响光电二极管响应时间的因素是()。
某软件项目的活动图如下图所示,其中顶点表示项目里程碑,连接顶点的边表示包含的活动,边上的数字表示该活动所需的天数,则完成该项目的最少时间为___________(6)天。活动BD最多可以晚___________(7)天开始而不会影响整个项目的进度。(
最新回复
(
0
)