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
2024-04-26
43
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. 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://tihaiku.com/zcyy/3572215.html
相关试题推荐
[originaltext]InsomelargeAmericancityschools,asmanyas20-40%ofthe
[originaltext]InsomelargeAmericancityschools,asmanyas20-40%ofthe
[originaltext]InsomelargeAmericancityschools,asmanyas20-40%ofthe
[originaltext]LawshavebeenwrittentogoverntheuseoftheAmericanNati
[originaltext]LawshavebeenwrittentogoverntheuseoftheAmericanNati
[originaltext]IhadflownfromSanFranciscotoVirginiatoattendaconfer
[originaltext]IhadflownfromSanFranciscotoVirginiatoattendaconfer
[originaltext]M:Sally,Iheardfromtheradiothatoverhalftheworld’sseven
[originaltext]M:Sally,Iheardfromtheradiothatoverhalftheworld’sseven
[originaltext]M:TheDeanjustannouncedthatDr.Holdenfsgoingtotakeovera
随机试题
[originaltext]Therearenotenoughcasesforsomanysuits,sowehavetorearr
Beingabletomulti-taskishailedbymostpeopleasawelcomeskill,butnot
Everytimeweopenourmouthsandspeakwe【C1】______ourselves—IamEnglish
Whydosomepeoplelivetobeolderthanothers?Youknowthestandardexpla
下列关于防火墙防火构造要求的叙述中,正确的有哪些()。A.防火墙设置应从
糖尿病诊断主要依据是空腹静脉dm浆葡萄糖水平≥()mol/L或任意时间静脉血浆葡
某企业在2017年3月20日以其机器设备作抵押向银行申请贷款100万元。银行审查
咀嚼肌所能发挥的最大力量为A.咀嚼压力 B.牙周耐力 C.咀嚼力 D.最大
显示胆酶分离前兆的疾病是( )。A.脂肪肝 B.胆石症 C.肝癌 D.肝
关于贷款发放的先决条件,下列说法错误的是()。A.贷款发放的重要先决条件,不用
最新回复
(
0
)