首页
登录
职称英语
[originaltext] A team of scientists recently began a project to measure the e
[originaltext] A team of scientists recently began a project to measure the e
游客
2024-03-31
40
管理
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、To determine whether our planet is warming up.
B、To study the behaviors of some sea animals.
C、To measure the depth of the ocean.
D、To measure the movement of the ocean.
答案
A
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3534888.html
相关试题推荐
[originaltext]LadiesandGentlemen,Neverbeforehavewehadsomanydiffer
[originaltext]LadiesandGentlemen,Neverbeforehavewehadsomanydiffer
[originaltext]Whatkeepsushealthyandhappyaswegothroughlife?Ifyou
[originaltext]Whatkeepsushealthyandhappyaswegothroughlife?Ifyou
[originaltext]Moderator:Hello,ladiesandgentleman.Itgivesmegreatple
[originaltext]Moderator:Hello,ladiesandgentleman.Itgivesmegreatple
[originaltext]Today,ChineseAmericansmakeuplessthan1%oftheU.S.po
[originaltext]Today,ChineseAmericansmakeuplessthan1%oftheU.S.po
[originaltext]IfyouareinanymajorcityinAmerica,thechancesarehigh
[originaltext]M:Hi,Lynn.Isawyouatregistrationyesterday.Isailedright
随机试题
WhyisMr.KingcallingtoMr.Marshall?[br][originaltext]Goodmorning,Mr.M
ItseemsincredibletomethatLatinisnottaughtinschoolsasamatterof
AcassettedeckplaysanaudiotapefromthewomanwhodiedTuesdayandshe
Itmaybeinferredfromthepassagethat______.[br]Intheauthor’sview,high
描写语言学、规范语言学、比较语言学的分类角度是()A.语言结构部门的范围不同
项目法人应当自开工申请批准之日起( )个月内开工。 A、1 B、3
共用题干 Self-relianceThemostimportantth
建设单位应当将大型的人员密集场所和其他特殊建筑工程的消防设计文件报送公安机关消防
下列选项中,不属于肾小球病性高血压发生机制的是 A.衲、水潴留B.血管内皮素增
某肝硬化消化道出血,伴高血压冠心病患者,下列止血惜施中最不恰当的是 A去甲
最新回复
(
0
)