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 n
It is hard to track the blue whale, the ocean’s largest creature which has almost been killed off by commercial whaling and is n
admin
2010-03-26
16
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 【S1】______ sightings are too unreliable to give real 【S2】______ into its behavior.
So biologists were delighted early this year when with the help of the Navy, they were able to 【S3】______ a particular blue whale for 43 days, monitoring its sounds. This was possible because of the Navy’s formerly top-secret system of under water 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 【S4】______ its global network of underwater listening system built over the decades to track the ships of 【S5】______ enemies.
Earth scientists announced at a news conference recently that they had used the system for closely 【S6】______ a deep-sea volcanic eruption (爆发) for the first time.
The speed of sound in water is 【S7】______ one mile a second—slower than through land but faster than through air. What is most important, different 【S8】______ of ocean water can act as channels for sounds, focusing them in the same way a stethoscope (听诊器) does when it 【S9】______ faint noises from a patient’s chest to a doctor’s ear. This focusing is the main reason that even 【S10】______ weak sounds in the ocean, especially low-frequency ones, can often travel thousands of miles.
A) layers B) roughly C) observation D) monitoring
E) visual F) uncover G) discover H) carries
I) relatively J) visible K) insight L) examining
M) potential N) considerably O) track
【S3】
选项
答案
O
解析
从语法结构上判断应选择一个动词原形,而选项中有两个动词:discover(发现)和track(跟踪),意思容易混淆。但从上下文理解应是“跟踪某一只蓝鲸43天”。故应选O。
转载请注明原文地址:https://kaotiyun.com/show/R5k7777K
0
大学英语四级
相关试题推荐
A、Doctorandpatient.B、Studentandteacher.C、Salesassistantandcustomer.D、Managerandofficeclerk.BM:Iwaswonderingif
A、Itisthesmallestoneofallthestars.B、Itisthenearestonetotheearth.C、Itisthebiggestoneofallthestars.D、It
LippettsHillisnowthemaintrainingcentrewherearmyofficersarereceivingtraining.Withtheincreaseinthetaskspeople
Ididn’texpectsoheavytraffic,______(否则我就会早点动身).
AccordingtoGoleman,thebiggestdifferencebetweenthetwoCEOsdescribedinthefirstparagraphliesin______.Theauthoro
A、Togethelpwiththecourse.B、TochatwithJacksocially.C、Tohandintheirassignments.D、Topracticegivinginterviews.A[
Researchintothematerialcultureofanationisofgreatimportancebecause______.Itcanbelearnedfromthispassagethat
A、Education.B、Administration.C、Publicsecurity.D、Transportation.B[听力原文]Whichofthefollowingcoststhelargestamountofp
A、Theboy’smotherhashadanaccident.B、Theboy’smotherdoesn’tknowofhiscondition.C、Theboy’smotherisinseriouscondi
A、Adrivingtest.B、Atrafficaccident.C、Apolicemovie.D、Thebestwaytomakesignals.B综合推断题,由对话中的signal,car,drivingcareles
随机试题
一般不用于治疗耳鸣耳聋的腧穴有
赵某与某公司签订了劳动合同,该公司为其提供专项培训费用进行专业技术培训,赵某取得电焊工特种作业资格证,该公司由于转产进行裁员,与赵某解除了劳动合同,依据《劳动合同法》的规定,下列关于赵某与该公司权利义务的说法,正确的是()。
某施工单位承包一套燃油加热炉安装的单位工程,包括加热炉、燃油供应系统、钢结构、工艺管线、电气动力与照明、自动控制、辅助系统等分部工程。项目部主管工程师编写了加热炉燃油泵等动力设备的单机试运方案,并按规定进行了审批。燃油泵的进口管道焊缝要求1
路基工程中,新建的地下管线施工必须依照()的原则进行。
下列各句中,没有语病的一项是()。
①影响生物寿命最关键的因素是基因②同种生物的自然寿命是类似的③从进化的角度看,这是生物在长期适应环境的过程中逐渐积累,通过自然选择而形成的④环境可以决定相关基因是否表达,而这些基因的表达与否,又会影响相应蛋白质的表达水平,由此
语句的意义除了由词义的组合表现出来的意义以外,还有一部分意义是由________________补充确定的。
Iftheonlineserviceisfreethenyouaretheproduct,technicianssay.GoogleandFacebookmakea【C1】______collectingpersonal
电子邮件应用程序实现SMTP的主要目的是()。
TheRedCrossisaninternationalorganization,whichcaresforpeoplewhoareinneedofhelp.AmaninaParis【C1】______who
最新回复
(
0
)