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 d
Researchers have identified 1. 4 million animal species so far—and millions remain to be discovered, named, and scientifically d
admin
2012-05-17
77
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
【S4】
选项
答案
G
解析
动词辨析题。空格前为引导定语从句的that,其先行词为creatures,空格处需要填入一个动词作谓语,结合所给选项可知,只有动词enable符合句意,此处意为“那些对农业、渔业、新药品和能源至关重要的生物”。
转载请注明原文地址:https://kaotiyun.com/show/z5f7777K
0
大学英语四级
相关试题推荐
A、Theyshouldwaitpatiently.B、Theyshouldaskthatmantoleave.C、Thatmanisoldenoughtoorderthingshelikes.D、Theysho
Manyteachersbelievethattheresponsibilitiesforlearningliewiththestudents.Ifalongreadingassignmentisgiven,instr
A、Two.B、Three.C、Four.D、Five.B推理题。四个选项都是数字,因此在听录音的过程中要注意捕捉与数字有关的信息。解答此题的关键是对罗列的细节(Friends,teachers,andotherpeople...)进行辨认推
Ifeveryouarecalled【C1】______tointroduceaspeaker;itwouldbewellforyoutobearin【C2】______thatyouhavearesponsibil
A、Inalaundry.B、Inanelevator.C、Inalibrary.D、Inabakery.B女士一开始就报出一个数字,并表示感谢。男士接着说他也要去那儿。显然两人是在电梯里,女士请男士帮她按楼层按钮,男士又正好与她
A、He’stired.B、Helosttherace.C、Hehasalreadybeentothetopofthehill.D、Heprefersdoingexerciseindoors.A“comeon”意
ShoppinghabitsintheUnitedStateshavechangedgreatlyinthelastquarterofthe20thcentury.【C1】______inthe1900smostAm
A、Inagarden.B、Inthewoods.C、Atafloristshop.D、Atapostoffice.C男士想头一些花送给朋友,女士给他推荐了康乃馨。因此可知这段对话发生在一个花店里,故选C。
A、Byair.B、Bycar.C、Bysea.D、Bytrain.A有考生可能会通过notifythecoastguard,判断嫌疑犯会选海路出逃,其实女士安排男士通知海岸警卫队的目的是防止嫌疑犯乘私人飞机从privateairf
随机试题
泰罗认为军事型组织有两个缺陷:第一,它要求过多的来自最高层的________;第二,对________期望太多,其结果是有效地排斥了管理层对工人的直接控制。
(2008年第61题)患者,男,50岁。2个月前,因急性前壁心肌梗死入院,经行左前降支内药物支架植入后,住院7天出院。此后患者无任何症状,服用药物1个月后自行停用。2小时前在睡眠中再次发生剧烈胸痛,ECG证实为急性前壁再发心肌梗死。该患者本次再梗的最可能原
患者男,22岁,大四学生。因“缓起头痛头紧、心烦、脾气大、易疲劳1年余”就诊。自诉1年多来经常感觉头晕脑胀,头部像有一个“紧箍咒”,整天昏昏沉沉的。经常无缘无故觉得累,但一玩游戏则感觉好些;容易困,但很难进入较深的睡眠状态。服用营养品效果不佳,迫切希望医生
女,38岁。腰痛伴左下肢放射痛1周。查体:下腰椎旁压痛,左下肢直腿抬高试验阳性(40°),加强试验阳性,左侧小腿外侧及足背内侧皮肤感觉减弱,左侧伸躅肌力减弱,考虑为腰椎间盘突出症。最可能突出的间隙是
引起便秘的常见病因是
依据《刑法》规定,下列哪些情形可以被认为属于“情节显著轻微危害不大,不认为是犯罪”?
居住区内的绿地应包括()。
混凝土拌合时的重要控制参数是()。
隐匿或者故意销毁依法应当保存的会计凭证、会计账簿、财务会计报告,对单位及其直接负责的人员()。
gettingmarried
最新回复
(
0
)