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
2024-02-02
4
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, 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 fear that the sound will harm the sea animals. So, scientists are conducting tests on the animals first. The researchers lowered a loud speaker that emit low frequency sound about 1,000 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 researchers keep track of the animals’ movements. If the 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.
Questions 16 to 18 are based on the passage you have just heard.
16. What is the purpose of analyzing the speed of sound through the Pacific Ocean?
17. For what purpose were radio transmitters used?
18. What was the reaction of the sea animals to 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 "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
推理题。根据关键句“Researchers at the site noticed that largenumbers of sea animals swim near the speaker whether it was turned on or off”可知,研究者发现不管它(仪器)是开是关,都有大量的海洋生物在周围游走。由此可推知海洋生物对声音测试并不害怕。故答案选D。
转载请注明原文地址:https://tihaiku.com/zcyy/3416853.html
相关试题推荐
[originaltext]M:Didyoureallygiveawayallyourfurniturewhenyoumovedint
[originaltext]M:Didyoureallygiveawayallyourfurniturewhenyoumovedint
[originaltext]M:Didyoureallygiveawayallyourfurniturewhenyoumovedint
[originaltext]M:Didyoureallygiveawayallyourfurniturewhenyoumovedint
[originaltext]M:Didyoureallygiveawayallyourfurniturewhenyoumovedint
[originaltext]M:Didyoureallygiveawayallyourfurniturewhenyoumovedint
[originaltext]M:IjustreceivedanE-mailfromoneofmyformerclassmates.I
[originaltext]M:IjustreceivedanE-mailfromoneofmyformerclassmates.I
[originaltext]CountyfairsareatraditioninNewEnglandtowns.Theyoffer
[originaltext]CountyfairsareatraditioninNewEnglandtowns.Theyoffer
随机试题
[originaltext]M:IhadtohaveMr.JohncomeoverandadjustmyTVagainlastn
[originaltext]M:Hi,Melissa!Howareyoudoing?W:I’msostressed!Idon’tkn
下列不属于人格类型内容的是()。A.乐观型、聪慧型、稳定型、恃强型 B.兴奋
下列对波的传播速度υ的表述中,描述正确的是()。A.在不同对地高度的架空线上,
“此亦彼也,彼亦此也”,这种说法( )。 A.是一种诡辩论的观点 B.符合
请阅读下列材料: 《搜索技巧》为教科社版普通高中课程标准实验教材《信息技术基础
房地产投资业务中房地产投资分析涉及的基本指标有( )。A.投资占用时间 B.
企业需要采取质量突破才能解决的问题通常是()。A.突发性的质量问题 B.
我国历史文化名城名单最早公布于()年。(2009年真题)A.1980 B
下列关于增值税纳税人年应税销售额的表述,不正确的是()。A.年应税销售额是指纳
最新回复
(
0
)