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
30
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://jikaoti.com/ti/BojFFFFM
0
大学英语四级
相关试题推荐
Everybodywantstogetwealthy.Intoday’s【B1】______world,makingmoneyorbecomingwealthysymbolizesaperson’ssuccessandc
《史记》(RecordsoftheGrandHistorian)是一部伟大的史学著作,为西汉时期(theWesternHanDy-nasty)司马迁所著。《史记》记载了我国从黄帝(YellowEmperor)到西汉时期长达3000年左右的历
A、Resolvetoughsocialandeconomicproblems.B、Raisethemajorinternationalchallenges.C、Collectdifferentworldviewstogeth
Hollywoodhasamessageforscientists:Ifyouwantsomethingthat’s100%accurateineveryway,gowatchadocumentary.Thethi
A、Itismademostlyofiron.B、Itismademostlyofsteel.C、Itismademostlyofplastic.D、Itismademostlyofpaperboard.C
A、France.B、TheCaribbean.C、England.D、Canada.B
A、Permanentlossofeyesightofpilots.B、Lossofconsciousnessofpassengers.C、Tragicresultsofairaccidents.D、Blackoutsof
Workerswithskillsinscience,technology,engineering,andmathematics(STEM)areamongthemostindemandandhighestpaid.The
A、Delightful.B、Painful.C、Depressing.D、Refreshing.C信息明示题。由Itissometimesabitdepressing可知,这位男士认为那段时间是很令人沮丧的,故选C。
A、Depressing.B、Refreshing.C、Painful.D、Delightful.A男士在谈到圣诞节的天气时,提到有一点点令人压抑,因此答案为A。B“令人耳目一新的”、C“令人痛苦的”和D“令人高兴的”与男士的描述不符。
随机试题
焊条电弧焊时,应从哪几个方面考虑合理选择焊接电流?
患者,男性。双侧下肢、臀部、躯干部皮损2个月余,皮损为炎性丘疹、水疱、脓疱、部分小结节,中心有坏死、潜行性溃疡,皮损边界清楚,边缘皮肤呈紫红色、水肿,自觉疼痛感明显。血常规提示WBC11×109/L、N85%、L13%、Hb115g/L、PLT1
男孩,2岁,出生后不久有发绀,杵状指,囱门未闭合,以法洛四联症收入院。超声心动图检查叙述,错误的是()。
生物氧化是指营养物质,例如糖、脂肪和蛋白质在体内分解,消耗氧气,生成CO2和H2O的同时产生能量的过程。生物氧化的产物包括CO2、H2O和能量(ATP)。H2O的生成主要是底物在各种()的催化下脱下氢,脱下的氢通过NAD+和FAD的携带,经过由各种递氢
资本主义的发展经历了自由资本主义和垄断资本主义两个阶段,其法律也与此相适应而表现出某种变化,对此,下列表述中可以成立的有:()
根据《建筑法》规定,建设单位在领取施工许可证后,应当在()个月内开工。
实行会员分级结算制度的期货交易所中,结算会员( )。
(2004年卷一第55题)被指控侵权的被告在以下哪些情况下应当提供其产品制造方法不同于专利方法的证明?
商业保险与具有社会保障性质的社会保险相比较,其特点不包括()。
张某设立一社会服务机构法人,专门从事社会服务工作,甲、乙、丙为该社会服务机构的会员。如果该社会服务机构终止,对该机构剩余财产的处理,正确的是()。
最新回复
(
0
)