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
A、To attract more sea animals to the testing site. B、To drive dangerous sea animals away from the testing site. C、To help trace
A、To attract more sea animals to the testing site. B、To drive dangerous sea animals away from the testing site. C、To help trace
admin
2015-06-23
84
问题
A team of scientists recently began a project to measure the effects of loud noises on sea animals. If the sounds don’t harm the animals, then the researchers can go ahead with a plan to transmit sound waves through the Pacific Ocean to take the earth’s temperature. Sound travels faster through warm water than cold water. By analyzing the speed of sound through the ocean over, the scientists will be able to determine if our planet is warming up. The experiment was nearly cancelled more than a year ago because environmental groups fear that the sound will harm the sea animals. So, scientists are conducting tests on the animals first. The researchers lowered a loud speaker that emit low frequency sound about 1,000 meters beneath the ocean. Scientists at the site transmit sound waves into the ocean. Radio trans-mitters attached to some of the sea animals help the researchers keep track of the animals’ movements. If the sea animals are distressed by the sounds, they would swim away from the speakers. So far, there aren’t any signs that the animals are being harmed. Researchers at the site noticed that large numbers of sea animals swim near the speaker whether it was turned on or off, but it is still too soon to know for sure, the scientists admit.
Questions 16 to 18 are based on the passage you have just heard.
16. What is the purpose of analyzing the speed of sound through the Pacific Ocean?
17. For what purpose were radio transmitters used?
18. What was the reaction of the sea animals to the sound tests?
选项
A、To attract more sea animals to the testing site.
B、To drive dangerous sea animals away from the testing site.
C、To help trace the sea animals being tested.
D、To determine how sea animals communicate with each other.
答案
C
解析
细节题。由“Radio transmitters attached to some of the sea animalshelp the researchers keep track of the animals’movements”可知,研究者把无线电发送器附在海洋生物身上是为了能够追踪它们的行踪。故答案为C。
转载请注明原文地址:https://kaotiyun.com/show/Jkl7777K
0
大学英语四级
相关试题推荐
A、Themancanonlyseethedoctortwoweekslater.B、Appointmentsmustbemadetwoweeksinadvance.C、Themancanhaveanappoi
Itisnotunusualtodayforoldpeopletospoiltheirgrandchildrenwithtoysandsweetsandto【C1】______totheiraggressivedem
A、Hewon’tvoteforthewoman.B、Hemayalsorunforclasspresident.C、Hehaspromisedtosupportthewoman.D、Thewomanshould
IntheUnitedStates,acountryofimmigrants,prejudiceanddiscriminationcontinuetobeseriousproblems.Therewasoftenten
A、Thefamilywereindifferent.B、Theyoungchildrenwerenoisy.C、Shelikedlivinginastudenthouse.D、Therewerenootherstu
Livinginatimewhenanever-increasingnumberofnewsproviderspushaconstantstreamofheadlinesatuseveryday,peopleca
A、Agoodacademicthesis.B、AquicksearchontheInternet.C、Applyingtheorytopractice.D、Ideaexchangeswiththeirteachers.
A、Tohaveherteethfilled.B、Tohaveherteethpulled.C、Tohaveherteethcleaned.D、Tohaveherteethexamined.A选项均以不定式开头以及选
Nodocumentissafeanymore.Fakingoncethedomainofskilleddeceiversthatusedexpensiveengraving(雕刻)andprintingequipmen
A、Inthewhitepage.B、Inthebluepage.C、Intheyellowpage.D、Inaspecialsection.B信息明示题。短文开头提到美国的电话本有三种颜色的页码。白页上记录人的电话,蓝页上
随机试题
A.PGE2B.PGF2αC.PGl2D.TXA2E.TXB2血小板合成的是:
假膜性炎是发生于
患者眩晕,头痛头胀,头重脚轻,面红目赤,急躁易怒,口苦,舌红苔黄,脉弦数。其证型是
对于二级评价项目,地面气象观测资料调查要求是:距离项目最近的地面气象观测站,()的常规地面气象观测资料。
某项目单因素敏感性分析,评价指标为财务净现值,不确定性因素为投资额,产品价格、经营成本,由下表所示计算结果可知,项目对三个因素的敏感程度由高到低依次为()。
某建设单位欲新建一座大型综合市场,于2006年3月20日领到工程施工许可证。开工后因故于2006年10月15日中止施工。根据建筑法施工许可制度的规定,该建设单位向施工许可证发证机关报告的最迟期限应是2006年()。
a>2,则双曲线的离心率的取值范围是()。
具体迁移是指一种学习中的具体的经验直接迁移到另一种学习中去。()
说明人类历史上存在的“超越”现象与五种社会形态演进规律的一致性。
数据库应用系统中的核心问题是()。
最新回复
(
0
)