首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
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
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
admin
2016-06-19
34
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、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
细节题。由“Radio transmitters attached to some of the sea animalshelp the researchers keep track of the animals’movements.”可知研究者把无线电发送器附在海洋生物身上是为了能够追踪它们的行踪。故答案为C。
转载请注明原文地址:https://jikaoti.com/ti/UvpFFFFM
0
大学英语四级
相关试题推荐
Sinceancienttimes,thedestructiveeffectsofearthquakesonhumanlivesandpropertyhaveencouragedthesearchforreliable
MoreattentionwaspaidtothequalityofproductioninFranceatthetimeofReneCoty.CharlesDeschanelwasthenthefinancia
Peoplebecomequiteillogicalwhentheytryto【C1】______whatcanbeeatenandwhatcannotbeeaten.IfyoulivedintheMediterr
MinorityReportA)Americanuniversitiesareacceptingmoreminoritiesthanever.Graduatingthemisanothermatter.B)BarryMill
AFewAspectsofAmericanLifeTravelA)It’ssummertime.FormanyAmericans,thisistheseasontotravel.Why?Becauseschool
Ithasbeensaidthateveryonelivesbysellingsomething.Inthelightofthisstatement,teacherslivebyselling【C1】______,p
ItIsn’tEasyBeingGreenGreenstoriesofhotelsA)Overthesummer,IstayedatfourhotelsintheUnitedStates.Theywereall
清明是中国的二十四节气(the24seasonaldivisionpointsinChina)之一,每年4月4—6日。节日过后,温度将会上升,降雨量会增加。这正是春天耕作和播种的好时节。但是清明节不仅是一个指导农活的节气,还是一个纪念(comm
A、Heisconfidenthewillgetthejob.B、Hischanceofgettingthejobisslim.C、Itisn’teasytofindaqualifiedsalesmanage
Thetermbiologicalclockisappliedtothemeansbywhichlivingthingsadjusttheiractivitypatterns,withoutany【B1】______c
随机试题
女性,37岁,怀孕足月,因高龄孕妇和怀疑胎儿宫内窒息行剖宫产。术后安返病房,术后第2天患者感觉右下肢疼痛,医生建议卧床休息。第3日下午起床去厕所时突然摔倒,出现呼吸困难,意识丧失,经抢救无效死亡。该病例最有可能的死亡原因是
山羊群发病,尤以羔羊最严重,表现为呼吸极度困难,体温升高;急性死亡,病死率高。剖检见大叶性肺炎,肺脓肿;肠道炎症明显。链霉素治疗有效。【假设信息】若链霉素不能治愈,剖检发现为大叶性肺炎,胸腔大量积液,遇空气后很快凝结成胶冻状,则最可能混合感染的病原是(
图中所示多跨梁承受集中荷载,其M图为()。
根据《水利水电工程等级划分及洪水标准)(SL252—2017)规定,某水库设计灌溉面积为98万亩,则此水库的工程等别至少应为()等。
在融资租赁合同中,承租人占有租赁物期间,租赁物造成第三人的人身伤害或财产损害的,出租人应与承租人承担连带赔偿责任。()
某市利达汽车修配厂私自拼装一辆汽车,欲将其出售,但惧怕该行为被发现,便委托朋友汪某代为推销,答应事成后给一笔数目可观的好处费。汪某隐瞒汽车真相,与外市郊区农民吴某签订了买卖汽车合同,并收取人民币5万元。吴某接到汽车后,发现该车是私自组装的,便向利达汽车修配
设在(0,+∞)内f'(x)>0,f(0)=0,则曲线F(x)=x∫0xf(t)dt在(0,+∞)内为()
我国政治体制改革的总体要求是
[*]
SingingAlarmsCouldSavetheBlindIfyoucannotsee,youmaynotbeabletofindyourwayoutofaburningbuilding—andth
最新回复
(
0
)