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
2023-08-07
64
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/2906680.html
相关试题推荐
[originaltext]M:Excuseme.Where’syourrockmusicsection?W:Rockmusic?I’m
[originaltext]M:Excuseme.Where’syourrockmusicsection?W:Rockmusic?I’m
[originaltext]W:Areyouwatchinganygoodshowsthesedays?M:Actuallyyes.I
[originaltext]W:Areyouwatchinganygoodshowsthesedays?M:Actuallyyes.I
[originaltext]W:Areyouwatchinganygoodshowsthesedays?M:Actuallyyes.I
[originaltext]M:Today,ourguestisRosieMullender,whoworksasafeaturese
[originaltext]M:GoodeveningandwelcometoPhysicsToday.[5]Hereweintervi
[originaltext]M:GoodeveningandwelcometoPhysicsToday.[5]Hereweintervi
[originaltext]M:[1]Doyoumindtakingmyphotowiththestatueoverthere?I
[originaltext]M:[1]Doyoumindtakingmyphotowiththestatueoverthere?I
随机试题
[originaltext]WhereisthelaptopIwasusing?(A)InconferenceroomF.(B)Wea
Whenbotheredbyotheranimalsorhumans,somespeciesofhornedlizardswillpo
Globalwarmingisatrendtowardwarmerconditionsaroundtheworld.Partof
有促进乳汁分泌作用的措施是A.孕激素制剂 B.前列腺素 C.口服溴隐亭 D
混凝土中氯离子含量测试时下列说法错误的是()。 A.可采用实验室化学分析法
A.补中益气汤 B.生化汤合失笑散 C.保阴煎 D.五味消毒饮合失笑散
非洲乐器种类繁多,最有代表性的是鼓。( )
1998年,北京某学生因成绩较差无法升学,父母应学校的要求去医院为孩子开了一张“
下列单位用地中,免征城镇土地使用税的是()。A.农产品加工厂用地 B.免
非少尿型急性肾衰竭时A.<100ml/24hB.<200ml/24hC.<400
最新回复
(
0
)