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、They were frightened and distressed. B、They swam away when the speaker was turned on. C、They swam closer to the speaker when t
A、They were frightened and distressed. B、They swam away when the speaker was turned on. C、They swam closer to the speaker when t
admin
2021-08-19
52
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. (12) By analyzing the speed of sound through the ocean over time, the scientists will be able to determine if our planet is warming up. (13) The experiment was nearly cancelled more than a year ago because environmental groups fear that the sound will confuse or harm sea animals. So scientists are conducting tests on the animals first. The researchers lowered a loud speaker that emits low frequency sound about 1 000 meters beneath the ocean. (14) 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 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 (15) 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 tests will continue through September. "If all goes well," they say, "we can begin measuring temperature changes on our planet."
Questions 12 to 15 are based on the passage you have just heard.
12. What is the purpose of analyzing the speed of sound through the Pacific Ocean?
13. Why was the experiment nearly cancelled?
14. For what purpose were radio transmitters used?
15. What was the reaction of the sea animals in the sound tests?
选项
A、They were frightened and distressed.
B、They swam away when the speaker was turned on.
C、They swam closer to the speaker when the speaker was turned off.
D、They swam near the speaker whether the speaker was turned on or off.
答案
D
解析
转载请注明原文地址:https://kaotiyun.com/show/azD7777K
0
大学英语六级
相关试题推荐
Oneofourexpectationsabouteducationisthatitwillpayoffintermsofupwardmobility.Historically,thecorrelationbetw
EatingOurYoung[A]AtFeltonvilleSchoolofArtsandSciences,amiddleschoolinapoorneighborhoodofPhiladelphia,thescho
A、Delayedtreatments.B、Thequakesthemselves.C、Lackoffoodandwater.D、Collapseofbuildings.D原文讲述地震的重大损失主要是由于房屋的倒塌和其他一些因素,
Innovation,theeffectiverecipeofprogress,hasalwayscostpeopletheirjobs.Overthepast30yearsthedigitalrevolutionh
Innovation,theeffectiverecipeofprogress,hasalwayscostpeopletheirjobs.Overthepast30yearsthedigitalrevolutionh
Teachersneedtobeawareoftheemotional,intellectual,andphysicalchangesthatyoungadultsexperience.Andtheyalsoneed
A、Sheisfamiliarwithallkindsofsportequipment.B、Sheisanexperiencedmountainclimber.C、Sheisaconfidentmountain-cli
A、Thesysteminviteslearnerstospeakdirectlywithspeakers.B、Thesystemofferslearnerstododictation.C、Thesysteminvite
A、Ithasbeenthebestsellerforweeks.B、Itadvisespeopletochangethemselves.C、Itisbeingsoldataverylowprice.D、Itd
随机试题
间接融资是指拥有暂时闲置货币资金的单位通过存款的形式,或者购买银行、信托、保险等金融机构发行的有价证券,将其暂时闲置的资金先行提供给这些金融中介机构,然后再由这些金融机构以贷款、贴现等形式,或通过购买需要资金的单位发行的有价证券,把资金提供给这些单位使用,
对各项政策方案效果的预测性分析和比较,这是政策方案的()
66.有关免疫抑制剂与药物、食物同服的影响,说法正确的有
A、Onmanyroutes,airlineshavelostupto90%oftheirpassengerstohighspeedtrains.B、ThespeedtrainservicebetweenParis
下列选项中,口服剂型药物的生物利用度顺序正确的是()。
小周是一个饲料厂的销售员,与各方面有广泛的接触,他认为法律没有人重要,有人、有朋友就有法律。他的这种认识属于下列哪一选项?()
北京丽美服装有限公司(110451××××)开展来料加工业务,加工成品返销韩国。北京丽美服装有限公司委托北京顺宇国际货运有限公司(110482××××)办理出口报关手续。货物从北京运输到天津,经船舶“HONGYUNV701E”号运输到韩国。其加工登
下列各项中,不能增加企业核心竞争力的是()。
关于公安执法监督说法正确的是()。
下面程序运行时,若输入395,则输出结果是()。PrivateSubCmdl_Click()Dima%a=InputBox(“请输入一个3位整数”)PrintaMod10,
最新回复
(
0
)