首页
登录
职称英语
[originaltext] A team of scientists recently began a project to measure the
[originaltext] A team of scientists recently began a project to measure the
游客
2023-08-07
63
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、The sound of waves is too noisy.
B、The experiment may pollute the water.
C、The sound of waves may harm sea animals.
D、The sea animals may disturb the experiment.
答案
C
解析
转载请注明原文地址:http://tihaiku.com/zcyy/2904558.html
相关试题推荐
[originaltext]I’dliketolookatavitalaspectofe-commerce,andthatisthe
[originaltext]I’dliketolookatavitalaspectofe-commerce,andthatisthe
[originaltext]I’dliketolookatavitalaspectofe-commerce,andthatisthe
[originaltext][12]Intoday’spersonalitystakes,nothingismorehighlyvalued
[originaltext]Pianosarenormallyfoundinbuildingforobviousreasons.Howeve
[originaltext]M:Ididn’tseeyouincreativewritingclasstoday.Whathappene
[originaltext]M:Ididn’tseeyouincreativewritingclasstoday.Whathappene
[originaltext]M:Ididn’tseeyouincreativewritingclasstoday.Whathappene
[originaltext]M:HiJane,pleasecomeinandtakeaseat.W:Well,youwouldli
[originaltext]M:HiJane,pleasecomeinandtakeaseat.W:Well,youwouldli
随机试题
Whatarepeopleadvisedtodotofightseasonaldepression?[br][originaltext]
SmokeandMinorsMoreteenagegirlssmokethanboys.Cou
SpeakerA:IheardJoesaysomethingterribletoyouyesterday.SpeakerB:_____
Fromthepassagewecaninfertaboois______.[br]Basedontheideaspresented
Supposeyouareastudent,sharingaroomwiththreeotherstudents.Youfindit
图示一矩形断面通风管道,断面尺寸为1.2mx0.6m,空气密度ρ=1.20kg
人民防空地下室两相邻防护单元连通口应设防护密闭门,设置方法正确的是( )。A.
DBS中“脱机存储器”是指()A.快闪存和磁盘 B.磁盘和光盘 C.光盘和
企业年初借得50000元贷款,10年期,年利率12%,P/A12%105.650
按《建筑安装工程费用项目组成》(建标[2003]206号)的规定,施工机械使用费
最新回复
(
0
)