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
2017-12-07
30
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.
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/WzT7777K
0
大学英语六级
相关试题推荐
Amassivepoolofwarmoceanwateriscausingchangesintheatmospherethatcouldproduceunusualweatheraroundtheworldint
Whenweworryaboutwhomightbespyingonourprivatelives,weusuallythinkabouttheFederalagents.Buttheprivatesector
AskmostpeoplehowtheydefinetheAmericanDreamandchancesarethey’llsay,"Success."Thedreamofindividualopportunityh
Ifyoudidn’tknowanybetter,youmightthinkthatStar,Snuppy,CCandANDiwerejustabunchofinterestingnames.You’donly
Baby-NamingTrends[A]Overthelastfiftyyears,Americanparentshaveradicallyincreasedthevarietyofnamestheygiveth
ThreeEnglishdictionariespublishedrecentlyalllayclaimtopossessinga"new"feature.TheBBCEnglishDictionarycontainsb
Writeanessaycommentingontheremark"Richesdonotalwaysbringhappiness."Youmaystateyourownviewonwealthandhappin
A、Designingfashionitemsforseveralcompanies.B、Modelingforaworld-famousItaliancompany.C、WorkingasanemployeeforFer
A、Doubtful.B、Guilty.C、Sad.D、Pessimistic.C①四个选项都是形容心理状态的词,因此本题很可能询问某人的感受。②短文开头提到,施瓦辛格初到美国参加了世界健美锦标赛,结果失败了,他伤心欲绝,大声痛哭。C中的sad是对
随机试题
五四运动的直接导火线是
符合1型糖尿病特点的选项有
化学结构为的药物是
A、贝壳B、干燥分泌物C、角D、除去内脏的干燥体E、病理产物土蛎的药用部位是()
A、生蒲黄B、鸡尿藤C、西红花D、罂粟壳E、血余炭须按特殊管理药品管理,不能装于一般药斗内的是
甲、乙、丙、丁四家公司出现下列情况,哪家公司应在2个月内召开临时股东大会?()
2007年某月,甲于深夜潜入乙宅,伺机盗窃,乙听到动静后起床并将甲堵在屋内,甲为逃离遂与乙发生打斗,其间,与乙一起居住的乙父丙亦惊醒起床,前来帮助乙擒甲,见乙不敌甲,于是丙就操起身边的菜刀对准甲就是一刀。但甲受伤后仍旧逃脱,后因为伤势严重死亡。对于丙的行为
表征臂架起重机起重特性的指标是起重力矩。起重量与幅度的关系以下选项正确的是()。
水工建筑物要求地基有足够的()。
如果十月一日是星期一。那么十月十五日是星期几?
最新回复
(
0
)