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
It is hard to track the blue whale, the ocean’s largest creature, which has almost been killed off by commercial whaling and is
It is hard to track the blue whale, the ocean’s largest creature, which has almost been killed off by commercial whaling and is
admin
2010-06-18
36
问题
It is hard to track the blue whale, the ocean’s largest creature, which has almost been killed off by commercial whaling and is now listed as an endangered species. Attaching radio devices to it is difficult, and visual sightings are too unreliable to give real insight into its behavior.
So biologists were delighted early this year when, with the help of the Navy, they were able to track a particular blue whale for 43 days, monitoring its sounds. This was possible because of the Navy’s formerly top-secret system of underwater listening devices spanning the oceans.
Tracking whales is but one example of an exciting new world just opening to civilian scientists after the cold war as the Navy starts to share and partly uncover its global network of underwater listening system built over the decades to track the ships of potential enemies.
Earth scientists announced at a news conference recently that they had used the system for closely monitoring a deep-sea volcanic eruption for the first time and that they plan similar studies.
Other scientists have proposed to use the network for tracking ocean currents and measuring changes in ocean and global temperatures.
The speed of sound in water is roughly one mile a second--slower than through land but faster than through air. What is most important, different layers of ocean water can act as channels for sounds, focusing them in the same way a stethoscope does when it carries faint noise from a patient’s chest to a doctor’s ear. This focusing is the main reason that even relatively weak sounds in the ocean, especially Iow-frequency ones, can often travel thousands of miles.
It can be inferred from the passage that______.
选项
A、new radio devices should be developed for tracking the endangered blue whales
B、blue whales are no longer endangered with the use of the new listening system
C、opinions differ as to whether civilian scientists should be allowed to use military technology
D、military technology has great potential in civilian use
答案
D
解析
从“tracking whales”到“monitoring a deep-sea volcanic eruption”再到“tracking ocean currents and measuring changes in ocean and global temperatures”,所有这些都是军用技术转民用的例子,由此我们可以看出,这种技术“in civilian use”上的巨大潜办,因此,[D]为正确答案。从文章第二段的“This was possible because of the Navy’s formerly top-secret system of underwater listening devices spanning the oceans.”可以看出,海军的这套“system of underwater listening devices”就足以满足“tracking the endangered blue whales”,由此可以断定[A]不正确。这一“listening system”只是用来监测蓝鲸的行为的,对它们的濒危与否没有关系,所以,[B]不符合题意。从文章的内容来看,这些“military technology”已经被“civilian scientists”使用,根本没有谈到其他不同的意见,因此,[C]也不符合题意。
转载请注明原文地址:https://jikaoti.com/ti/ti3YFFFM
0
专业英语八级
相关试题推荐
1Thefoxreallyexasperatedthemboth.Assoonastheyhadletthefowlsout,intheearlysummermornings,theyhadtotak
Whencanthedroughtbeexpectedtoend?Thedroughtispredictedtocause______toTexasagribusiness.
ThecapitalofNewZealandis______.
Specialwordsusedintechnicaldiscussion______.Theauthor’smainpurposeinthepassageisto______.
Whichoneisnottrueaccordingtothecontentofthenews?
Peopledonotanalyzeeveryproblemtheymeet.Sometimestheytrytorememberasolutionfromthelasttimetheyhadasimilarp
1 "Internationalcommunication"iscommunicationbetweenmembersofdifferentcultures.Thisdefinitionissimple.Butt
1 Insomniaisunderappreciated.2 Manypeoplewouldratheradmittotheirfetishesandcontagiousrashesthanconfesstoinsom
Ifambitionistobewellregarded,therewardsofambition--wealth,distinction,controloverone’sdestiny--mustbedeemedwor
ResearchintoDNAhashadasignificantimpactonmedicine.ThroughrecombinantDNAtechnology,scientistscanmodifymicroorgan
随机试题
Homer(霍纳)综合征的表现,不含
《刑事诉讼法》规定,下级法院接到最高法院执行死刑的命令后,发现有关情形时,应当停止执行,并且立即报告最高法院,由最高法院作出裁定。下列哪些情形应当适用该规定?()
背景某公司承包了一条单跨城市隧道,隧道长度800m,跨度15m,地质条件复杂。设计采用浅埋暗挖法进行施工,其中支护结构由建设单位直接分包给一家专业施工单位。施工准备阶段,某公司项目部建立了现场管理体系,设置了组织机构,确立了项目经理的岗
()对于服务相当于婚姻对于()
政策制定的原则主要有()、民主参与原则等等。
220,130,70,34,(),10。
2013年,重庆市房地产开发企业完成投资突破3000亿大关,达3012.78亿元,同比增长20.1%,较一季度回落5.2个百分点,比上半年回落7.6个百分点,比前三季度回落0.5个百分点。截至12月月底,全市商品房施工面积26251.89万平方米,同比增
某校学生参加秋游,如果每台车坐60人,则调15台车还不够,若每台车坐70人,则调14台车还空余。最后决定改乘面包车,每台可坐x人,只需调x台车正好坐满,共有多少师生参加秋游?
A、Gardeningandlandscaping.B、Retailing.C、Financing.D、Child-care.A在听到前文的gardeningandlandscaping时应竖起耳朵听清下文,接着又听到表示最高级信息的req
A、Shemissedthebus.B、Shecaughtthebus.C、Shegotupfiveminutesearlierthanusual.D、Shelikesgettingupearlyinthemo
最新回复
(
0
)