首页
登录
职称英语
Researchers have identified 1.4 million animal species so far—and millions r
Researchers have identified 1.4 million animal species so far—and millions r
游客
2024-01-31
28
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【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 [br] 【C1】
选项
答案
J
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3410427.html
相关试题推荐
Millionsofteenagersareindangerofputtingtheirhealthatriskbygetti
Millionsofteenagersareindangerofputtingtheirhealthatriskbygetti
Millionsofteenagersareindangerofputtingtheirhealthatriskbygetti
[originaltext]Today,millionsofpeoplerunintheUnitedStates.Manymore
[originaltext]Today,millionsofpeoplerunintheUnitedStates.Manymore
[originaltext]Today,millionsofpeoplerunintheUnitedStates.Manymore
[originaltext]Today,millionsofpeoplerunintheUnitedStates.Manymore
TheLibraryofCongressisAmerica’snationallibrary.Ithasmillionsofbo
TheLibraryofCongressisAmerica’snationallibrary.Ithasmillionsofbo
GoingtosummercampisalongtraditionintheUS.Some8millionchildren
随机试题
Inthesummerof2010,record-hightemperatureshitMoscow.Atfirstitwasj
Airpollutionisoneofthemostpervasiveenvironmentalproblemsbecauseat
ForgetexpensiveeducationalDVDsandprivatetutors,thesecrettosmartch
arcsinx+C
下面哪两个指标具有相同的经济意义,可以相互补充( ).A.资产负债率与产权比率
2001年、2002年全国高等学校各学科学生数(单位:千人) 2001年
A.还原型谷胱甘肽 B.多烯磷脂酰胆碱 C.异甘草酸镁 D.双环醇 E.
下列各项中,可以作为胶浆剂的是()。A.桂皮糖浆 B.山梨醇 C.羧甲
下列关于债券价值与折现率的说法中,正确的有()。A.报价利率除以一年内复利
甲公司向乙公司签发一张纸质商业承兑汇票,完成承兑后下列关于该汇票办理票据信息登记
最新回复
(
0
)