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
55
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] 【S3】
选项
答案
D
解析
形容词辨析题。空格后为名词price,因此空格处应填入形容词。前一句说早在2000年时,科学家估计50亿美元可以解决这个问题,但现在即使是2 630亿也只是一个小数目,因此small符合题意。small price表示“便宜,价低”。
转载请注明原文地址:http://tihaiku.com/zcyy/3468487.html
相关试题推荐
[originaltext]Morethanthree-millionpeoplediedofAIDSlastyear.Thee
[originaltext]Morethanthree-millionpeoplediedofAIDSlastyear.Thee
Themostfamouscaseofananimalsaidtobecapableofcountingisthatof
Themostfamouscaseofananimalsaidtobecapableofcountingisthatof
Themostfamouscaseofananimalsaidtobecapableofcountingisthatof
Smallasitis,theantis____________(同样是)acreatureasareallotheranimal
TheLibraryofCongressisAmerica’snationallibrary.Ithasmillionsofbo
TheLibraryofCongressisAmerica’snationallibrary.Ithasmillionsofbo
TheLibraryofCongressisAmerica’snationallibrary.Ithasmillionsofbo
TheLibraryofCongressisAmerica’snationallibrary.Ithasmillionsofbo
随机试题
Theywillneversucceed,______hardtheytry.A、becauseB、howeverC、whenD、since
Anewstudyfindsthatevenmildstresscanaffectyourabilitytocontroly
骨髓增生程度低下的疾病是()A.缺铁性贫血 B.多发性骨髓瘤 C.巨幼
A.乌头碱B.中乌头碱C.消旋去甲乌药碱D.次乌头碱E.乌头原碱附子中对心脏毒性
A.实热证B.虚热证C.实寒证D.虚寒证E.阴阳两虚证阴气偏盛反映于临床上的证候
(2016年11月)( )是整个培训教学方案的重心。A.确定教学目的 B.检
下列说法中符合奥苏伯尔的观点的是( )A.接受学习导致机械学习,发现学习导致意
甲公司所在地有活跃的房地产交易市场,而且能够从房地产市场上获得同类房地产的市场报
材料的损耗一般以损耗率表示,材料损耗率可以通过()计算确定。A.估价法 B.
下列风险控制方法中,适用于第二类危险源控制的有()。A.个体防护 B.消除或
最新回复
(
0
)