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
Protecting just 42 sites across Asia, ranging from temperate forests to tropical grasslands, could be key to the survival of one
Protecting just 42 sites across Asia, ranging from temperate forests to tropical grasslands, could be key to the survival of one
admin
2012-08-05
29
问题
Protecting just 42 sites across Asia, ranging from temperate forests to tropical grasslands, could be key to the survival of one of the world’s most symbolic and feared, wild cats—the tiger.
That radical proposal, published online in the journal Public Library of Science-. Biology, represents a scaling-back of ambition and what one of the paper’s authors calls "ruthless priority setting". "It’s forcing hard decisions," said Simon Stuart, co-author of the paper, who chairs the species survival commission at the International Union for Conservation of Nature. For animals that are worth considerable sums, he added, "there’s no way you can protect them across an entire landscape, because the costs are too high".
John Robinson, executive vice president for conservation and science at the Wildlife Conservation Society, said researchers experienced "a real shock" when they determined what was needed to keep the species going. The majority of about 1 000 breeding females are found in India, Russia and Indonesia. None remain in Cambodia, China, DPRK and Vietnam. "Unless we protect those core populations, within a few short years we could lose tigers altogether," said Robinson, another of the paper’s co-authors.
Over the past couple of decades, environmentalists have focused on preserving large, ecologically rich landscapes to ensure that a wide range of plant and animal species can thrive over the long term. But for a number of highly endangered species, scientists now say, governments and nonprofit organizations must target their efforts more narrowly if they want to ensure that these populations remain viable.
In the case of the tiger, three factors—habitat loss, the overhunting of its prey and poaching (偷猎)— have caused its number to drop from more than 10 000 in the 1980s to fewer than 3 500 today. It is said that tiger parts are so prized in Eastern medicine that a dead one can sell for $ 1 500 to $ 3 500 before its eyes are sold as a cure for some complicated diseases and are converted into a soup for the body, and its bones are ground into powder to treat some diseases like typhoid (伤寒). Researchers have determined that tigers occupy less than 7 percent of their historic range. In addition to poaching, Asia’s rapid economic development—including road and dam construction—has eroded tiger habitat.
Robinson and others advocate a two-step process that focuses on monitoring and protecting tigers in the 42 source sites and a longer-term effort to preserve the large landscapes tigers need to hunt and wander.
To ensure the thriving of a wide range of plant and animal species over the long term, environmentalists used to emphasize______.
选项
答案
preserving large,ecologically rich landscapes
解析
同义转述题。本题考查人们此前为保护濒危物种而付出的努力。定位句明确指出,过去的20多年里,环保主义者一直强调要保护大片生态资源丰富的地区,以确保大量物种长期地繁衍生息。题干中的used toemphasize是原文中have focused on的同义转述。
转载请注明原文地址:https://jikaoti.com/ti/Z8rFFFFM
0
大学英语六级
相关试题推荐
Thepooroldconsumer!We’dhavetopayagreatdealmoreifadvertisingdidn’tcreatemassmarketsforproducts.Itisprecisel
Canwegeneratethenewculturalattitudesrequiredbyourtechnologicalvirtuosity?Historyisnotveryreassuringhere.Ithas
Thenumberofparentsteachingtheiroffspringathomewillincreaseifthecurrentpublicschoolsystemcontinuestobeviewed
A、Hehasjustbeendead.B、Hewenthomeafterchurch.C、Hehasnotfeltwelllately.D、Hewillattendchurchtomorrow.A据理判断题。对话
A、Manyspecializedcharitableorganizations.B、Thesmallcitieswhicharevisitedbyafewpeople.C、Sometownsthatarefrequen
A、Bothprivateandpubliccollegesarediscountingtuition.B、Schoolsarequiteconservativeondiscountingtuition.C、Allfresh
Whatdoesthepassagemainlytellus?BeforeRachelSasserreluctantlydatedwithhim,sheknewherboyfriend______.
A、Agreatcharacterinhistory.B、Atheatricalroleinaplay.C、Aspecialsymbolinlife.D、Animaginarypersoninafiction.D
Theworkers’promisedwageincreaseisbeing______whileitisexaminedbythegovernmenttoseeifitisgreaterthanthelaw
Wewerelookingforwardtoseeingthepyramids,whichpromisedtobethe________ofourtrip.
随机试题
我国公务员级别确定与晋升的依据有()
下列组织中呈现嗜银性的是
患者胃痛暴作,恶寒喜暖,脘腹得温则痛减,口不渴,喜热饮,舌苔薄白,脉弦紧。治疗应首选()
长期应用氯丙嗪,最常见的副作用是
继发效应指用冷或用热超过一定时间,产生与生理反应相反的作用。()
如图所示,均质鼓轮A和圆盘B质量均为m,半径均为R,物体C质量也为m。若物体C上升时的速度为v,则系统对A点的动量矩为()。
财务顾问申请人应当提交最近()个月未因执业行为违法违规受到处罚的说明。
判决宣告前,一人犯数罪,分别被判处有期徒刑,对于数个有期徒刑的并罚,应采用()(2017年一专一第11题)
王某与李某素有仇怨。一日,李某拦住王某,百般辱骂,王某挥舞拳头作势欲打李某,李某逃跑,王某紧追不舍。李某从屠户徐某处抢得一把杀猪刀,王某不敢再追。李某用言语刺激王某,王某又追。待王某追近时,李某用杀猪刀捅了王某一刀,导致王某心脏破裂而死。李某的行为属于(
打开考生文件夹下的演示文稿yswg.pptx,按照下列要求完成对此文稿的修饰并保存。(1)使用演示文稿设计中的“活力”模板来修饰全文。全文幻灯片的切换效果设置成“百叶窗”。(2)将第三张幻灯片版式改变为“标题和内容”,标题处键入“顶峰”,将对象部分动
最新回复
(
0
)