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
18
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、They were frightened and distressed.
B、They swam away when the speaker was turned on.
C、They swam closer to the speaker when the speaker was turned off.
D、They swam near the speaker whether the speaker was turned on or off.
答案
D
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3534891.html
相关试题推荐
[originaltext]LadiesandGentlemen,Neverbeforehavewehadsomanydiffer
[originaltext]Whatkeepsushealthyandhappyaswegothroughlife?Ifyou
[originaltext]Whatkeepsushealthyandhappyaswegothroughlife?Ifyou
[originaltext]Moderator:Hello,ladiesandgentleman.Itgivesmegreatple
[originaltext]IfyouareinanymajorcityinAmerica,thechancesarehigh
[originaltext]IfyouareinanymajorcityinAmerica,thechancesarehigh
[originaltext]IfyouareinanymajorcityinAmerica,thechancesarehigh
[originaltext]IfyouareinanymajorcityinAmerica,thechancesarehigh
[originaltext]M:Hi,Lynn.Isawyouatregistrationyesterday.Isailedright
[originaltext]M:Hi,Lynn.Isawyouatregistrationyesterday.Isailedright
随机试题
Theshortageofenergyisgettingworse.It______animmediatesolution.A、callso
如在对开四色印刷时每色加放60方,则加放的纸张总量可折合为( )等。A.120
下列关于著作权保护期限的说法中,正确的有( )。A.法人(或其他组织)的作品,
下列关于气体灭火系统设计的叙述中,哪项错误?()A.气体灭火系统适用于扑救可
对话式口头语言的特点是()。A.目的性强 B.依赖性强 C.表达充分 D.
2019年1—12月份,全国房地产开发投资132194亿元,比上年增长9.9%,
A.静脉注射液 B.多剂量滴眼液 C.颗粒剂 D.片剂 E.散剂应加入抑
红霉素静滴时为防止出现血栓性静脉炎,药物浓度不宜超过A.3mg/ml B.0
根据管理《中华人民共和国反不正当竞争法》 第三方互联网药品交易平台上的丁药品电
现场条件不允许进行液压和气压试验时,可采用其它方法代替压力试验,说法正确的是(
最新回复
(
0
)