首页
登录
职称英语
Researchers have identified 1. 4 million animal species so far—and millions
Researchers have identified 1. 4 million animal species so far—and millions
游客
2024-02-20
48
管理
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【S1】______every animal on Earth? A pair of Brazilian scientists has crunched (详细计算) the numbers and【S2】______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【S3】______price to pay to understand the creatures that【S4】______such essentials as agriculture, fisheries, new drugs, and energy sources, says ornithologist (鸟类学家) 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【S5】______and climate change looming, the【S6】______to document the planet’s biodiversity—or biota (生物区)—is urgent,【S7】______considering the essential role these life forms play in crop pollination, clean air, and other aspects of human【S8】______"We are losing species by extinction faster than we are describing new species" according to some estimates, says biologist Antonio Marques, who【S9】______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【S10】______to a complete understanding of the animal kingdom is a global shortage of taxonomists (分类学家), experts say.
A) obstacle F) cheaper K) attempt
B) classify G) enable L) coauthored
C) especially H) come M) soaring
D) effort I) small N) well-being
E) identify J) exactly O) yet [br] 【S6】
选项
答案
D
解析
名词辨析题。空格前为定冠词the,因此空格处应该填入名词。根据上下文及本句句意,对地球上的生物种类进行备份并不是轻而易举的事,需要一番努力,故effort“努力;精力”符合句意。
转载请注明原文地址:https://tihaiku.com/zcyy/3468490.html
相关试题推荐
ResearchersinLondonandBristolhavefoundthatmenareparticularlylikel
ResearchersinLondonandBristolhavefoundthatmenareparticularlylikel
ResearchersinLondonandBristolhavefoundthatmenareparticularlylikel
ResearchersinLondonandBristolhavefoundthatmenareparticularlylikel
ResearchersinLondonandBristolhavefoundthatmenareparticularlylikel
Americantravelersplantotake10millionmoretripsthissummerthanlast,
Americantravelersplantotake10millionmoretripsthissummerthanlast,
Americantravelersplantotake10millionmoretripsthissummerthanlast,
Itisacuriousphenomenonofnaturethatonlytwospeciespracticetheart
Itisacuriousphenomenonofnaturethatonlytwospeciespracticetheart
随机试题
Artificialflowersareusedforscientificaswellasfordecorativepurpose.
ThenovelSonsandLoverswaswrittenbyA、ThomasHardy.B、JohnGalsworthy.C、D.
[originaltext]Zimbabwe’sinflationratehasincreasedsharplyinthepastt
Millionsdieearlyfromairpollutioneachyear.Airpollutioncoststheglob
关于过敏原皮肤试验出现假阴性原因不正确的是A.试验抗原的浓度过浓 B.因各种原
男,41岁,发现上腭前部正中肿物3个月(如图),伴自发性剧痛,近半个月来午后低热
下列颅骨骨瘤的临床特点中,错误的是A.多见于青壮年 B.好发于枕部 C.生长
每小时正常胎动次数为A.1~3次 B.3~5次 C.5~8次 D.8~10
《中国药典》溶出度测定结果的判断标准为:6片(个)中每片(个)的溶出量,按标示量
下列有关审计程序的说法中,错误的是()。A.重新计算可通过手工方式或电子方式进
最新回复
(
0
)