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 "examine" the spea
A、They were frightened and distressed. B、They swam away when the speaker was turned on. C、They swam closer to "examine" the spea
admin
2014-04-30
12
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、They were frightened and distressed.
B、They swam away when the speaker was turned on.
C、They swam closer to "examine" the speaker when it was turned off.
D、They didn’t seem to be frightened and kept swimming near the speaker.
答案
D
解析
转载请注明原文地址:https://kaotiyun.com/show/p517777K
0
大学英语六级
相关试题推荐
Theplaceofthechildinsocietyhasvariedforthousandsofyearsandhasbeenaffectedbydifferentculturesandreligions.I
Forthispart,youareallowed30minutestowriteashortessayonthetopicofShouldSchoolsOfferHandwritingLessons?Yous
AsToyotaandHummerhavelearned,growingtoofastcanbeadangerousthing.Fromitsorigins,successintheautoindustr
Isyourfamilyinterestedinbuyingadog?Adogcanbeahappy【B1】______toyourfamily,butifyouchoosethewrongkindofdog
Forthispart,youareallowed30minutestowriteashortessayonthetopicofStudents’StartingTheirOwnBusinesses.Yoush
Scotlandisauniqueplace.IthassomeofthemostbeautifulcitiesinEurope,alivingevidenceofasplendidandproudpast.
A、Hestayedinaroomonthethirdfloorforanhour.B、Hewasabsentwhenthediscussionwasbeingheld.C、Nobodybutthewoman
A、Theapartmentisbetterfurnished.B、Thewomanpreferstoliveinaquietplace.C、It’slessexpensivetoliveinanapartment
A、Heisgoingtogiveatalkonfishing.B、Hethinksfishingisagoodwaytokilltime.C、HehasthesamehobbyasCindy’sfath
A、Thegirlwasdisgustedwithhispoverty.B、Thegirl’sfamilywereopposedtotheirmarriage.C、Hefeltsorryforhisterrible
随机试题
转子流量计的转子位子越高,流量越大。 ()
阴虚动风证的临床特点是()
甲与乙签订了仓储合同,由乙保管甲的6箱货物,保管期限为3个月。甲提前1个月提取了其中3箱货物,另3箱货物则在仓储期满后1个月才提取。对此,下列选项中正确的是()。
在竣工验收前,对已完工程及设备进行保护所需的费用属于( )。
相对于优先股,永续债独有的特点不包括()。
下列有关企业的公平市场价值的表述中,错误的有()。
Communication via e-mail is by far the most common Internet activity. You can(71 )with anyone in the world who has an Internet a
司法判例的意义是什么?(1989年4月,1990年9月,1993年4月,1994年10月)
AnEnglishschoolboywouldonlyaskhisfriend:"Wassatime,then?"Tohisteacherhewouldbemuchmorelikelytospeakinamo
ConradHiltonreallywantedtobeabanker.Instead,hesuccessfullychangedthe【C1】______purchaseofaTexaslow-endhotelinto
最新回复
(
0
)