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
2023-08-24
50
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、To attract more sea animals to the testing site.
B、To drive dangerous sea animals away from the testing site.
C、To help trace the sea animals being tested.
D、To determine how sea animals communicate with each other.
答案
C
解析
转载请注明原文地址:https://tihaiku.com/zcyy/2953136.html
相关试题推荐
[originaltext]Monarchbutterfliesareacommonsummersightinthenorthern
[originaltext]Monarchbutterfliesareacommonsummersightinthenorthern
[originaltext]MySpace,thesocialnetworkingwebsite,isdifferentfromoth
[originaltext]I’llstillbeworking,butthingswouldbedifferent.Withan
[originaltext]I’llstillbeworking,butthingswouldbedifferent.Withan
[originaltext]I’llstillbeworking,butthingswouldbedifferent.Withan
[originaltext]M:Whereareyougoing,Catherine?TodayisSaturday.W:Saturday
[originaltext]W:Whataday!I’mexhausted.M:Well,it’snotoveryet.W:Yeah
[originaltext]M:Iguesswe’llhaveahotsummeragain.W:Iknow.Lastsummer
[originaltext]M:Iguesswe’llhaveahotsummeragain.W:Iknow.Lastsummer
随机试题
Fancyathree-dayweekend—notjustonceinawhilebutweekinweekout?You
Forthispart,youareallowed30minutestowriteashortessayonthetopi
简述卫生政策的特点。
公文如有多个签发人,则主办单位的签发人姓名位于第1行,其他签发人的姓名则()。
下列关于自然现象的说法符合气象学常识的是()。A.白头风,乌头雨 B.朝霞行千
A.口服降糖药物 B.运动疗法 C.饮食控制 D.胰岛素治疗 E.糖尿病
硝酸酯类药物舒张血管的作用机制是()A:产生NO,激活腺苷酸环化酶,使细胞内c
A.夜间突发呼吸困难,伴咳浆液粉红色泡沫痰 B.呼气、吸气均费力,呼吸频率增快
爷爷的年龄是一个二位数,将此二位数的数字交换得到爸爸的年龄,他们的年龄差是孙子年
最新回复
(
0
)