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
2023-06-29
60
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] 【C10】
选项
答案
K
解析
转载请注明原文地址:http://tihaiku.com/zcyy/2794170.html
相关试题推荐
Millionsofteenagersareindangerofputtingtheirhealthatriskbygetti
Millionsofteenagersareindangerofputtingtheirhealthatriskbygetti
Millionsofteenagersareindangerofputtingtheirhealthatriskbygetti
[originaltext]Today,millionsofpeoplerunintheUnitedStates.Manymore
[originaltext]Today,millionsofpeoplerunintheUnitedStates.Manymore
[originaltext]Today,millionsofpeoplerunintheUnitedStates.Manymore
TheLibraryofCongressisAmerica’snationallibrary.Ithasmillionsofbo
TheLibraryofCongressisAmerica’snationallibrary.Ithasmillionsofbo
TheLibraryofCongressisAmerica’snationallibrary.Ithasmillionsofbo
TheLibraryofCongressisAmerica’snationallibrary.Ithasmillionsofbo
随机试题
AstheworldexcitedlygreetedSnuppy,thefirstcloned(克隆)dog,criticsce
Insomecountriesyoungpeopleareencouragedtoworkortravelforayearbe
[originaltext]M:Hi,Claire.Howdoesitfeeltobebackoncampus?W:Gee,Hi,
[originaltext]M:HiTracy!Whatdoyouthinkofourclassonchildren’sliterat
1934年9月苏联加入国联,对此说法错误的一项是()。A.为了顺应建立欧洲集体
小柴胡汤的功用是A.和解少阳 B.和解少阳,内泻热结 C.透邪解郁,疏肝理脾
吞噬杀伤活性最强的细胞是A.NK细胞B.T细胞C.B细胞D.中性粒细胞E.嗜碱性
( )指各个方案之间在技术经济、现金流量、资金使用等方面相互影响,不完全互斥也
根据《仲裁法》,仲裁裁决可能被撤销的情形有()。A.裁决的事项超出仲裁协议约定
男孩,4岁,反复咳嗽2个月,查体:体温正常,浅表淋巴结(-),咽(-),两肺多哮
最新回复
(
0
)