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
2016-12-18
39
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 Bali. 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.
Little Hercules is the first remotely controlled vehicle ______.
选项
A、that can be used for deep-sea expedition
B、that is used to explore the "Coral Triangle"
C、that can go as deeply as 2.3 miles undersea
D、that is developed by American scientists
答案
B
解析
第2段第1句that引导的表语从句明确指出,Little Hercules是第一台用于勘测印尼SangiheTalaud地区(即“珊瑚大三角”)的远程操控潜水器。因此,本题应选B。
转载请注明原文地址:https://kaotiyun.com/show/4RF7777K
0
大学英语六级
相关试题推荐
Thefinancialclimateforcharitiesisworsening,withmorethanhalfhitbytheeconomicdownturn,asurveyrevealstoday.Over
TheorganizationbehindtheLawSchoolAdmissionTestreportedthatthenumberoftestsitadministeredthisyeardroppedbymor
TheorganizationbehindtheLawSchoolAdmissionTestreportedthatthenumberoftestsitadministeredthisyeardroppedbymor
HowExerciseCouldLeadtoaBetterBrain[A]Thevalueofmental-traininggamesmaybespeculative,asDanHurleywritesinhis
Betteraccesstohealthcaredatahelpslocalgovernmentsimprovepreventivehealthpoliciesaimedatreducingoverallmedicalc
Ahundredyearsago,itwasassumedandscientifically"proved"byeconomiststhatthelawsofsocietymadeitnecessarytohave
中国是“诗的国度”。正如历史记载的,在古代中国,诗歌就很受欢迎。中国现存最早的一部诗歌总集是(TheOdes),所收录的诗歌约创作于西周初年至春秋中叶。之后,不同诗体发展起来,其中五言绝句(five-characterpoetry)和七言绝句(seve
Lastyear,Iwroteapieceentitled"WhywewronglyfreakoutoverAP?"ThreetofiveAdvancedPlacementcoursesinhighschool
Agroupofspermwhalesappeartohavetakeninadeformedbottlenosedolphin,marineresearchershavediscovered.Behaviora
Agroupofspermwhalesappeartohavetakeninadeformedbottlenosedolphin,marineresearchershavediscovered.Behaviora
随机试题
人体的消化腺是________。
下面有关老年人用药注意事项的说法错误的是( )。
病人,女性,45岁,卵巢囊肿,新人院。护士收集资料时,询问“您是否绝经了?”这一提问属于
以下,()不属于设备安装工程费用的构成部分。
投资风险它也是一种经营风险,通常指企业投资的______。
全程陪同导游人员是指受()委派,作为其代表,在领队和地方陪同导游人员的配合下实施接待计划,为旅游团(者)提供全程陪同服务的工作人员。
通货膨胀目标制
在某项测验中,总分高分组被试在某题的通过率为0.70,低分组被试在该题的通过率为0.20,那么该题的区分度为
模块包含了一个声明区域和一个或多个子过程(Sub开头)或函数过程(以【】开头)。
What’stheproblem?
最新回复
(
0
)