首页
登录
职称英语
Towards the end of June, a unique joint expedition began in the waters near
Towards the end of June, a unique joint expedition began in the waters near
游客
2023-08-10
48
管理
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. [br] The discovery of the two chirostylid crabs is mentioned as an example to illustrate______.
选项
A、the uniqueness of the fauna
B、the diversity of the corals
C、the relation between the corals and the fauna
D、the similarity between the corals and a rainforest
答案
C
解析
题目提到的The discovery of the two chirostylid crabs是对第5段第3句的概括,该句开头的Forinstance表明该句内容是为了说明上一句,上一句提到了corals和a specialized fauna,因此,第3句是为了举例说明第2句中提到的corals和a specialized fauna的关系。由此可见,本题应选C。
转载请注明原文地址:http://tihaiku.com/zcyy/2914118.html
相关试题推荐
Thehealth-careeconomyisfilledwithunusualandevenuniqueeconomicrela
Thehealth-careeconomyisfilledwithunusualandevenuniqueeconomicrela
Wesometimesthinkhumansareuniquelyvulnerabletoanxiety,butstresssee
Wesometimesthinkhumansareuniquelyvulnerabletoanxiety,butstresssee
Wesometimesthinkhumansareuniquelyvulnerabletoanxiety,butstresssee
TowardstheendofJune,auniquejointexpeditionbeganinthewatersnear
TowardstheendofJune,auniquejointexpeditionbeganinthewatersnear
TowardstheendofJune,auniquejointexpeditionbeganinthewatersnear
Thehealth-careeconomyisfilledwithunusualandevenuniqueeconomicrela
Thehealth-careeconomyisfilledwithunusualandevenuniqueeconomicrela
随机试题
InWesternculture,anengagementbeginswith"yes"toasimplequestion:"W
A.limitedB.idealC.motivatedD.sources
HowtoUseaLibraryA)You’redrivingyourcarhomefrom
装饰放线时,基准点(线)不包括()。A.主控线 B.轴线 C.±0.000
男性,42岁,3天来阵发性中腹部痛,伴恶心呕吐较频繁。20年前行阑尾切除术。查体
Thechangeinthatvillagewasmiraculou
下边四个小图形中,只有一个是由上边的四个图形拼合而成(只能通过上,下,左,右平移
小儿惊风多见A.面部青灰、口唇青紫 B.面色青黑 C.面色白虚浮 D.面色
关于牙萌出异常的描述,错误的是A.早萌多见于下颌恒切牙 B.早萌的牙根发育不全
(2019年真题)招标人的下列行为中,属于以不合理条件限制,排斥潜在投标人或者投
最新回复
(
0
)