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
In the following text, some sentences have been removed. For Questions 1~5, choose the most suitable one from the list A~G to fi
In the following text, some sentences have been removed. For Questions 1~5, choose the most suitable one from the list A~G to fi
admin
2015-09-30
104
问题
In the following text, some sentences have been removed. For Questions 1~5, choose the most suitable one from the list A~G to fit into each of the numbered blanks. There are two extra choices, which do not fit in any of the blanks.
For the endangered North Atlantic right whale, these arc trying times. These leviathans who live and migrate in waters along the East Coast of North America teeter closer to the brink of extinction than perhaps any other whale species. Their population is tiny—less than 350—and continues to shrink.【C1】______
Yet for scientists and conservationists anxious about the future of these creatures, rays of hope are beginning to pierce an otherwise gloomy horizon. Thanks to a surge of scientific research and new tools for conducting it, they expect to learn far more about right whales, their interaction with the environment, and how to better protect them from their biggest threat: man.【C2】______
For the right whales, the leading causes of mortality are collisions with ships and encounters with fishing gear, researchers say. Females appear to have the toughest time surviving the range of human and natural threats. It’s these challenges scientists hope to address with a growing momentum in right-whale research.
【C3】______ Conservationists are working with governments and the shipping industry to move or control traffic on heavily used sea lanes that ships and whales share. And recent research is yielding potentially useful insights into the impact of factors ranging from water quality to shifts in climate.
"I’m not much of a Pollyannaj 1 can be very grumpy about the progress of right-whale biology and conservation," says Scott Kraus, director of research at the New England Aquarium in Boston. But "in the next couple of years we’re going to see a tremendous burst of very creative scientific energy" applied to fundamental biological and ecological questions surrounding the whales.
"When those questions get answered, we’ re going to have very specific ideas about what management strategies will reduce mortality and perhaps enhance reproduction," he says.
【C4】______ In principle, preventing "two female deaths a year would have a major impact on the prospects for the population," says Hal Caswell, a marine zoologist at the Woods Hole Oceanographic Institution in Woods Hole, Mass.
【C5】______
From 1500 to 1600, Basque whalers decimated right-whale populations in the eastern Atlantic, taking an estimated 25,000 to 40,000. In the late 1600s, by some accounts, it would have been possible to walk across Cape Cod Bay on the backs of whales. But by the mid-1700s, New Englanders had taken another 3,000, Mr. Kraus says. By the early 20th century, "only a few dozen whales survived in the western North Atlantic".
[A]If they can save a population this small, then it could boost hopes of saving other species from the unintended impact of humans on the environment.
[B]Yet achieving that means untangling a web of intertwined human and environmental factors that contribute to the whales’ plight. The one factor that weighs most heavily is human.
[C]In addition, researchers are exploring a number of acoustic approaches to avoiding ship-whale collisions. One technique scientists hope to test later this month involves the use of moored buoys that use passive sonar systems to listen for whales.
[D]To an outsider, the goal looks deceivingly within reach. The population is so small that it would take only modest pains in saving whales to help turn the situation around.
[E]That population had slowly rebuilt. Over the past 20 years, researchers have built an impressive collection of 250,000 photos—a catalog of some 460 North Atlantic right whales. Each animal bears unique growths of hardened skin, or callosities, in places where hair would appear on humans. The callosity patterns act as visual tags, allowing researchers to follow the whales’ life history.
[F]Later this month, for example, researchers are set to test new approaches to tracking the elusive whales in hopes of alerting ships to their presence. Meanwhile, chemists and engineers are developing whale-friendly commercial-fishing gear.
[G]By some estimates, if current population trends hold, the species will vanish within the next 200 years.
【C4】
选项
答案
D
解析
本题位于段首,需联系上下文获得答题线索。上文大意为科学研究的发展对减少鲸鱼的死亡率,提高鲸鱼的繁殖能力这一目标的实现有较大影响。下文指出.研究表明防止雌性鲸鱼的死亡对保持鲸鱼数量有明显作用。由此可以判断段首空白部分的内容应与鲸鱼数量有关。选项D论述了外行人对于保护鲸鱼的看法,在外行人看来保持鲸鱼数量是轻而易举的,其实不然,这是从反面论证了保护鲸鱼数量的艰巨性,与上下文一致,故选项D为最佳选项。
转载请注明原文地址:https://kaotiyun.com/show/JXzZ777K
0
考研英语一
相关试题推荐
Smoking,whichmaybeapleasureforsomepeople,isaserioussourceofdiscomforttotheirfellows.(1)_____,medicalauthorit
Smoking,whichmaybeapleasureforsomepeople,isaserioussourceofdiscomforttotheirfellows.(1)_____,medicalauthorit
Smoking,whichmaybeapleasureforsomepeople,isaserioussourceofdiscomforttotheirfellows.(1)_____,medicalauthorit
YouaregoingtoreadalistofheadingsandatextaboutRitualsandceremoniesandculturalidentity.Choosethemostsuitable
Ithasbeennecessarytoreferrepeatedlytotheeffectsofthetwoworldwarsinpromotingallkindofinnovation.Itshouldbe
Asagiantofthestockmarket,Appleisunusual.Formuchofthepast20years,threecompanieshavealternatedintheroleof
Theletterseemed______byachild.
Itusedtobesostraightforward(直接的).Ateamofresearchersworkingtogetherinthelaboratorywouldsubmittheresultsofthei
Itusedtobesostraightforward(直接的).Ateamofresearchersworkingtogetherinthelaboratorywouldsubmittheresultsofthei
Itusedtobesostraightforward(直接的).Ateamofresearchersworkingtogetherinthelaboratorywouldsubmittheresultsofthei
随机试题
下列哪种贫血,网织红细胞增高最明显
川芎茶调散主治外风头痛,方中集一派辛散疏风之品而成,其制方的主要理论根据是
假定桩端持力层土层厚度h1=40m。桩间土的内摩擦角φ=20°。试问,计算桩基础中点的地基变形时,其地基变形计算深度(m)应与下列( )项数值最为接近。土层条件同上题。当采用实体深基础计算桩基最终沉降量时,试问,实体深基础的支承面积(m2),应与下列
“备案号”栏应填()。“总价”栏应填()。
上市公司的股东依法发行、在一定期限内依据约定的条件可以交换成该股东所持有的上市公司股份的公司债券是指( )。
2014年10月,张某到甲公司工作。2015年11月,甲公司与张某口头商定将其月工资由原来的4500元提高至5400元。双方实际履行3个月后,甲公司法定代表人变更。新任法定代表人认为该劳动合同内容变更未采用书面形式,变更无效,决定仍按原每月4500元的标准
现有数量相同的A、B两种货物出售,预计A以20%利润定价,B按亏本两成来定价,最终可赚10%。但实际情况是B货大受欢迎,提价后销售利润率达到70%;A货销售情况不理想,最终打折清仓;综合来看仍实现了既定的10%总体利润率,问A货最终打了几折?
构成我们学习上最大障碍的,不是未知的东西,而是已知的东西。这句话的含意是()。
Amillionmotoristsleavetheircarsfilledupwithpetrolandwiththekeysintheignitioneveryday.Thecarsaresittingin
Ausefuldefinitionofanairpollutantisacompoundaddeddirectlyorindirectlybyhumanstotheatmosphereinsuchquantitie
最新回复
(
0
)