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
2014-10-08
66
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 a time, 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 feared that the sound would confuse or harm the sea animals. So, scientists are conducting tests on the animals first. The researchers lowered a loud speaker that emits low frequency sound about 1000 meters beneath the ocean. Scientists at the site transmit sound waves into the ocean. Radio transmitters attached to some of the sea animals help the researches keep track of the animals movements. If 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. The test will continue through September. if If all goes well, they say, fwe can begin measuring temperature changes on our planet.
Questions 23 to 25 are based on the passage you have just heard.
23. What is the purpose of analyzing the speed of sound through the Pacific Ocean?
24. What was the reaction of the sea animals to the sound tests?
25. For what purpose were radio transmitters used?
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
转载请注明原文地址:https://kaotiyun.com/show/HPm7777K
0
大学英语六级
相关试题推荐
ThisweekanewenrollmentstudybytheCouncilofGraduateSchoolsconfirmedthatAmericanwomenarenowearningmoredoctoral
Forthispart,youareallowed30minutestowriteashortessayentitledCrazeforMatch-making.Youshouldwriteatleast150
A、Thewomanshouldbuymorereferencebooks.B、Thewomanshoulddomoresearching.C、Thewomanisnotpatientenough.D、Thewoma
A、Howshouldwecareforpreciousmetal.B、Astandardunitformeasuringweight.C、Howtojudgethevalueofpreciousmetals.D、
Theyovercameallthedifficultiesand______(提前两个月完工).
A、Thecostsforitareusuallyhigher.B、Itcan’tbefulfilledwithoutcomputer.C、Peoplecan’tstudyattheirownpace.D、There
TheAdvantagesofBeingHelplessAteverystageofearlydevelopment,humanbabieslagbehindinfantsfromotherspecies.A
A、Itispopularintheacademiccircle.B、ItisnotacceptableintheUnitedStates.C、ItjustbeginsinJapan.D、Itjustbegins
A、Theyarebecominglessandless.B、Theycansatisfydifferentpeople’sdemand.C、Theyusuallyofferlowsalaries.D、Theyprovi
Amidweakjobandhousingmarkets,consumersaresavingmoreandspendinglessthantheyhaveindecades,andindustryprofessio
随机试题
有害物质的发生源,应布置在工作地点机械通风或自然通风的后面。()
女性25岁。风湿性心脏病主动脉瓣狭窄,近3周来乏力不适就诊。体检:皮肤有少量瘀点,主动脉瓣区有收缩期和舒张期杂音,脾可触及。血红蛋白80g/L。本例诊断最可能是
胎盘功能减退或过期妊娠时羊水呈
倾斜烟羽模式中,参数Vg代表()。
实施全员参与原则一般要采取的主要措施是()。
混凝土的和易性表现在()。
某施工机械的时间定额为0.391台班/100m3,与之配合的工人小组有4人,则该机械的产量定额为()m3/台班。
建筑中安全出口总宽度,与安全疏散设施的构造形式,建筑物的耐火等级、使用性质、消防安全设施等多种因素有关。有一座4层地下建筑,地下3层人数最多为500人,根据楼梯宽度指标1.0m/百人,该建筑地下3层及3层以上每层楼梯的总宽度为()m。
pubicthrowable(stringmessage)构造函数的getmessage()方法,对无参数构造函数而言,用它返回的是【】。
Thespaceshuttleprogramentailstheuseofsophisticatedtechnology.
最新回复
(
0
)