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
Towards the end of June, a unique joint expedition began in the waters near Indonesia. In an area of remarkable marine diversity
Towards the end of June, a unique joint expedition began in the waters near Indonesia. In an area of remarkable marine diversity
admin
2016-04-01
40
问题
Towards the end of June, a unique joint expedition began in the waters near Indonesia. In an area of remarkable marine diversity known as the "Coral Triangle", two vessels set sail: the American Okeanos Explorer and the Indonesian Baruna Jaya IV. Their destination was not over the horizon, but to explore the depths of the ocean.
Jane Lubchenco, administrator of America’s National Oceanic and Atmospheric Administration, says this is the first time that scientists have used a remotely operated vehicle to investigate the cold depths of Indonesia’s Sangihe Talaud region. Their remotely operated vehicle, known as Little Hercules, is working in waters as deep as 3,700 metres(2.3 miles)and as shallow as 250 metres.
By several accounts, the diversity of marine life being discovered is phenomenal. Tim Shank, of the Woods Hole Oceanographic Institution and the lead scientist on the expedition, says the team are discovering levels of large-animal diversity that rival anything found in similar habitats elsewhere on the planet.
Dr. Shank is directing the expedition from a command centre in Jakarta, the Indonesian capital. He says the team have discovered between 30 and 40 new species in the past week of diving alone.
Little Hercules is cruising over hot springs, deep-sea muds and the rocky tops of seamounts—a kind of underwater mountain that rises from the sea floor. A whole different set of corals live down here—and with them come a specialized fauna(动物群). For instance, two chirostylid crabs have been found that live their adult lives only in one particular black coral. Sea stars, crabs, shrimp and worms are found living in the limbs of these corals as birds and insects do in the branches of trees in a rainforest.
What is most intriguing is that the team are gathering evidence for the existence of a deep-ocean "Wallace Line". This is an area named after Alfred Wallace, an evolutionary biologist who noticed in the 19th century that the fauna on either side of this line were distinctly different. The line runs between Borneo and Sulawesi, and through the Lombok Strait near Bah. To the west of the line the animals are Asian and to the east of it the species are a mix of Asian and Australian.
The reason for this line is not entirely understood, says Dr. Shank, but it is thought to be related to the difficulty that species have had in crossing the deepwater under this line. Any confirmation that Wallace’s Line extends to the floor of the deep ocean itself will certainly test ideas about the evolution of the region. The mission continues until the end of August.
According to Dr. Shank, the "Wallace Line" ______.
选项
A、hasn’t been fully accounted for
B、doesn’t really exist
C、can justify the marine diversity
D、is derived from undersea
答案
A
解析
A是对最后一段第1句提到的The reason...is not entirely understood的近义改写,account for意为“解释,说明”。故A为本题答案。
转载请注明原文地址:https://kaotiyun.com/show/f8L7777K
0
大学英语六级
相关试题推荐
IntelligentandEnergy-savingSolarHomeA)Ifsomegroupgaveoutawardsfortheleastenergy-efficientstructures—thewaythose
AustraliahasbeenunusualintheWesternworldinhavingaveryconservativeattitudetonaturaloralternativetherapies,acco
Moreandmoregadgetsseektoreplicatethesortsofthingsyourmotherusedtoneedleyouabout:gettingexercise,eatingmore
Competitionforadmissiontothecountry’stopprivateschoolshasalwaysbeentough,butthisyearElisabethKrentsrealizedit
Thatexperiencesinfluencesubsequentbehaviourisevidenceofanobviousbutneverthelessremarkableactivitycalledrememberin
Everybodyloathesit,buteverybodydoesit.Arecentpollshowedthat40%ofAmericans【C1】______thepractice.InAmericaalone,
AnumberofscientificstudieshavefoundthattheamountofsugarweconsumeisamajorfactorinhowbigAmericanshavebecome
Oldstereotypesdiehard.Pictureavideo-gameplayerandyouwilllikelyimagineateenageboy,byhimself,compulsivelyhammer
HowCouldYourHobbyBetheKeytoFinancialSuccess?[A]Virtuallyeveryonehastheknowledgetheyneedtomakeafortune.Every
A、Satisfying.B、Tough.C、Meaningless.D、Boring.A短文开头提到,ZoeChamberswasasuccessfulPR(PublicRelations)consultantandherl
随机试题
动力转向系常见故障的症状有_______、_______和_______。
下列有关能量金字塔的说法,有误的是()
2009年3月1日,中华公司以一台设备与建海公司交换一批库存商品,设备的原价为300万元,累计折旧为100万元,固定资产减值准备为20万元,公允价值为260万元,建海公司库存商品的账面价值为160万元,公允价值(计税价格)为200万元,适用的增值税税率为1
民间非营利组织的所有者是相关资源的提供者。()
甲公司于2×17年1月1日以银行存款5000万元购入乙公司有表决权股份的40%,能够对乙公司施加重大影响。取得该项投资时,乙公司各项可辨认资产、负债的公允价值等于账面价值,双方采用的会计政策、会计期间相同。2×17年度,乙公司实现净利润500万元。乙公司2
若一外国游客突然患重病,需要住院治疗,但如患者没钱看病,应请领队或组团社与()联系解决其费用问题。
甲购买汽车后不久因刹车失灵而受伤,则甲()。
根据下表,回答86-90题。世界部分城市气候状况注:第6、7、9、10、11、12列中温度、降水和日照指标之后的数字表示特定的月份。表中海拔高度位居第三的城市,其最湿月平均降水量约占全年平均降水量的:
设X~N(0,1),当给定X=χ时,Y~N(ρχ,1-ρ2),(0<ρ<1)求(X,Y)的分布以及给定Y=y时,X的条件分布.
算法的时间复杂度是指()。
最新回复
(
0
)