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 measure the movement of waves in the ocean. B、To determine whether the Earth’s temperature is going up. C、To study the beha
A、To measure the movement of waves in the ocean. B、To determine whether the Earth’s temperature is going up. C、To study the beha
admin
2016-06-19
68
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 transmitters 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 measure the movement of waves in the ocean.
B、To determine whether the Earth’s temperature is going up.
C、To study the behavior of some sea animals.
D、To measure the depths of the ocean.
答案
B
解析
细节题。根据“By analyzing the speed of sound through theocean over,the scientists will be able to determine if our planet is warmingup.”可知通过分析声音通过海洋的速度,科学家能够发现地球是否变暖。故选项B符合题意。
转载请注明原文地址:https://kaotiyun.com/show/4EY7777K
0
大学英语四级
相关试题推荐
SoonafterstartinghisjobassuperintendentoftheMemphis,Tenn.,publicschools,KrinerCashorderedanassessmentofhisne
WanttoKnowYourDiseaseRisk?CheckYourExposomeA)Whenitcomestohealth,whichismoreimportant,natureornurture?Youm
WanttoKnowYourDiseaseRisk?CheckYourExposomeA)Whenitcomestohealth,whichismoreimportant,natureornurture?Youm
Trafficlightsarecrucialtoolsforregulatingtrafficflow.Theyarenot,however,perfect.Driversexchangethegridlockthat
A、Alittleboring.B、Barelysatisfactory.C、Tootroublesome.D、Quitepleasant.D观点态度题。男士说现在马上就要回城里了,问女士对这次的周末野营(weekendcamping)
A、Gettingreadyfortheexams.B、Takingthefinalexams.C、Seeingsomebodyelse.D、Preparingforsomethingunknown.A
A、Thefarmer’ssecretsweetheart.B、Thefarmer’smother.C、Thefarmer’swife.D、Thefarmer’ssister.A细节题。当医生看到这个给她打电话的农民时,他哭泣着告
A、Thenoisecamefromthetires.B、Thenoisecameformthebrakes.C、ThenoisecamefromMrs.Jones’singing.D、Thenoisecamef
MayorMichaelBloomberg’sadministrationreceivedamajorsetbackwhenajudgehalteditsplantolimitthesizeofsugarydrink
A、ShehasbeenlongingtoattendHarvardUniversity.B、She’llconsidertheman’ssuggestioncarefully.C、Shehasfinishedherpr
随机试题
有关原发性脊柱侧弯的临床表现,错误的是
女,33岁,G2P0,妊娠12周行钳刮术,术中见清出物里有黄色脂肪组织,患者腹痛剧烈,下列处理错误的是
最常见的胎先露是
下列各项中,哪一项不属于托儿所的保教任务?()
警察是具有武装性质的维护社会秩序、保卫国家安全的国家行政力量。()
TheEuropeanUnionrevealedonJanuary23rdhowitplanstosavetheworld.Amammothclimate-changeplanspellsoutindetailh
设当x→0时,是等价的无穷小,则常数a=__________.
设f(x)在R上是以T为周期的连续奇函数,则下列函数中不是周期函数的是().
Thecaronedrivesmayshowhis/her______orsocialposition.
A、Twodollars.B、Threedollars.C、Fourdollars.D、Fivedollars.BM:Ticketsaresixdollarsforadults.Children’sticketsareh
最新回复
(
0
)