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
2016-08-02
61
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.
【C3】
选项
答案
F
解析
本题位于段首,可联系上下文获得答题线索。上文论述了露脊鲸死亡的主要原因是轮船的撞击和捕鱼设施造成的伤害。下文主要论述了自然资源保护学家正在就保护鲸鱼而采取的措施和行动。因此空白处的内容应与在轮船航行和捕鱼设施上采取的保护鲸鱼的行动有关,故选项F为最佳选项。
转载请注明原文地址:https://kaotiyun.com/show/rboZ777K
0
考研英语一
相关试题推荐
Neuroscientistshavelongunderstoodthatthebraincanrewireitselfinresponsetoexperience—aphenomenonknownasneuroplast
Icametofeminismthewaysomepeoplecometosocialmovementsintheirearlyyears:outofself-interest.Igotontheequalit
BankruptcyratesintheU.S.havebeengrowingformorethantwodecadesdespitegenerallyrisinglevelsofpersonalincome.The
Itwasjustafootnotecomparedwiththemoreinfectiousdisasterthatkilledmillionsmorepeoplein1918,butthe1957influen
Americanschoolsaren’texactlyfrozenintime,butconsideringthepaceofchangeinotherareasoflife,ourpublicschoolste
Shortlybeforehediedoflymphoma,thegreatwriterandphysicianLewisThomas,whosebooksturnedscienceintoawayofapprec
Scienceanditspracticalapplicationsintheformoftechnology,orthe"science"oftheindustrialarts,asWebsterdefinesth
Anecdotalevidencehaslongheldthatcreativityinartistsandwriterscanbeassociatedwithlivinginforeignparts.Rudyard
Thedestructionofournaturalresourcesandcontaminationofourfoodsupplycontinuetooccur,largelybecauseoftheextreme
Inthefollowingtext,somesentenceshavebeenremoved.ForQuestions1~5,choosethemostsuitableonefromthelistA~Gtofi
随机试题
A、甲状腺激素B、PTHC、降钙素D、胃泌素E、活性维生素D促进肠钙吸收,溶骨作用,肾脏重吸收磷,促进成骨作用的激素是
A.修复体与牙体完全密合B.修复体的轴壁不能与牙体完全密合C.修复体邻面接触点不能密合D.修复体强度较差E.修复体能恢复良好的天然牙铸造全冠的特点是
上消化道出血最常见病因是( )。
患者胸阳不振,血脉受寒,胸痹胸痛。治疗应首选
其性属阴的是()。
()是总监理工程师必须掌握的信息。
菲利普斯曲线说明了货币政策之间存在矛盾的是()。
You______himlastyearwhenyouwereinEngland.
Completetheformbelow.WriteNOMORETHANTWOWORDSAND/ORANUMBERforeachanswer.RegistrationformExampleAns
A、Shedoesn’twanttohelptheman.B、Shecan’tfixthecomputer.C、Shecan’tsendthee-mailsnow.D、Shedoesn’tknowhowtose
最新回复
(
0
)