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
考研
For hundreds of millions of years, turtles(海龟) have struggled out of the sea to lay their eggs on sandy beaches, long before the
For hundreds of millions of years, turtles(海龟) have struggled out of the sea to lay their eggs on sandy beaches, long before the
admin
2017-11-14
35
问题
For hundreds of millions of years, turtles(海龟) have struggled out of the sea to lay their eggs on sandy beaches, long before there were nature documentaries to celebrate them, or GPS satellites and marine biologists to track them, or volunteers to hand-carry the hatchlings (幼龟) down to the water’ s edge lest they become disoriented by headlights and crawl towards a motel parking lot instead. A formidable wall of bureaucracy has been erected to protect their prime nesting sites on the Atlantic coastlines. With all that attention paid to them, you’d think these creatures would at least have the gratitude not to go extinct.
But Nature is indifferent to human notions of fairness, and a report by the Fish and Wildlife Service showed a worrisome drop in the populations of several species of North Atlantic sea turtles, notably loggerheads (红海龟) , which can grow to as much as 400 pounds. The South Florida nesting population, the largest, has declined by 50% in the last decade, according to Elizabeth Griffin, a marine biologist with the environmental group Oceana. The figures prompted Oceana to petition the government to upgrade the level of protection for the North Atlantic loggerheads from "threatened" to "endangered"—meaning they are in danger of disappearing without additional help.
Which raises the obvious question: what else do these turtles want from us, anyway? It turns out, according to Griffin, that while we have done a good job of protecting the turtles for the weeks they spend on land (as egg-laying females, as eggs and as hatchlings) , we have neglected the years they spend in the ocean. "The threat is from commercial fishing," says Griffin. Trawlers (which drag large nets through the water and along the ocean floor) and long-line fishers (which can deploy thousands of hooks on lines that can stretch for miles) take a heavy toll(损失) on turtles.
Of course, like every other environmental issue today, this is playing out against the background of global warming and human interference with natural ecosystems. The narrow strips of beach on which the turtles lay their eggs are being squeezed on one side by development and on the other by the threat of rising sea levels as the oceans warm. Ultimately we must get a handle on those issues as well, or a creature that outlived the dinosaurs (恐龙) will meet its end at the hands of humans, leaving our descendants to wonder how a creature so ugly could have won so much affection.
What constitutes a major threat to the survival of turtles according to Elizabeth Griffin?
选项
A、Their inadequate food supply.
B、Unregulated commercial fishing.
C、Their lower reproductive ability.
D、Contamination of sea water.
答案
B
解析
细节题。第三段倒数第二句援引Elizabeth Griffin的话指出,真正的威胁来自商业捕捞;最后一句又进一步补充说明:对于海龟来说,拖捞船和长线捕鱼对它们是沉重的打击。由此可见,B项为正确答案。
转载请注明原文地址:https://kaotiyun.com/show/uaIZ777K
0
考研英语一
相关试题推荐
Peopleare,onthewhole,pooratconsideringbackgroundinformationwhenmakingindividualdecisions.Atfirstglancethismigh
ShoppinghabitsintheUnitedStateshavechangedgreatlyinthelastquarterofthe20thcentury.【C1】______inthe1900smostAm
ShoppinghabitsintheUnitedStateshavechangedgreatlyinthelastquarterofthe20thcentury.【C1】______inthe1900smostAm
AgingposesaseriouschallengetoOECD(OrganizationofEconomicCo-operationandDevelopment)countries,inparticular,howto
AgingposesaseriouschallengetoOECD(OrganizationofEconomicCo-operationandDevelopment)countries,inparticular,howto
WhenPaulGorski,thefounderofanorganizationcalledEdChange,visitscollegesanduniversitiestoadvisethemoncampusdive
Itisallverywelltoblametrafficjams,thecostofpetrolandthequickpaceofmodernlife,butmannersontheroadsarebe
Itisallverywelltoblametrafficjams,thecostofpetrolandthequickpaceofmodernlife,butmannersontheroadsarebe
Thehighestanxietymomentintheholidayseasonmustbethemomentjustbeforeyourlovedonesunwraptheirgifts.Theribbonc
随机试题
在棱柱社会中,若变革是同时来自国外和国内的压力的结果,就可以被称为()
患者男性,47岁。心房颤动,长期服用地高辛。近半年来经常胸痛。该患者不宜做运动试验的主要理由是
完整叶片呈长圆形或长圆状倒披针形,基部渐狭下延至叶柄成翼状,含靛玉红、靛蓝的药材是
设f’(lnx)=1+x,则f(x)等于()。
下列关于报关企业、进出口货物收发货人报关范围的表述,正确的是()。
商品流通企业经营决策的原则()。
确定中学数学教学目的的依据是_______,_______,_______和_______。
下列被判处死刑缓期二年执行的犯罪分子不能适用限制减刑的是()。
简述担保物权的概念和特征。
已定义以下函数:fun(Char*p2,char*p1){while((*p2=*p1)!=’\0’){p1++;p2++;}}函数的功能是()。
最新回复
(
0
)