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
Mass Strandings of Whales 1. The tide goes out suddenly,【T1】______ the whales【T1】______ 2. Mass strandings linked to parasites a
Mass Strandings of Whales 1. The tide goes out suddenly,【T1】______ the whales【T1】______ 2. Mass strandings linked to parasites a
admin
2017-02-18
54
问题
Mass Strandings of Whales
1. The tide goes out suddenly,【T1】______ the whales【T1】______
2. Mass strandings linked to parasites
a. Evidence: Stranded animals infested with many parasites
b. Example: Worms found in the ears of dead whales
Whales rely heavily on their hearing to 【T2】______【T2】______
This type of infestation can be very harmful
3. Mass strandings related to toxins or poisons
Toxins【T3】______ from plants or animals 【T3】______
The whale ingests these toxins
Whether leading to stranding or not depends upon the toxin【T4】______【T4】______
4. Mass strandings caused by following their prey ashore
Example:【T5】______whales beached after following the squid ashore 【T5】______
Not true for most mass strandings
The animals’ stomach【T6】______ reveal most had not been feeding 【T6】______
5. Mass strandings linked to humans
A growing concern: loud【T7】______made by humans cause strandings 【T7】______
Noises caused by【T8】______are of particular concern【T8】______
6. Mass strandings related to group【T9】______ 【T9】______
Whales follow【T10】______ leaders ashore【T10】______
【T8】
Mass Strandings of Whales
Good afternoon everyone. Well, with some of you will go out on fieldwork it’s timely that in this afternoon’s session I’ll be sharing some ideas about the .reasons why groups of whales and dolphins sometimes swim ashore from the sea right onto the beach and, most often, die in what were known as "mass stranding". Unfortunately, this type of event is a frequent occurrence in some of the locations that you’ll be travelling to, (1) where sometimes the tide goes out suddenly, confusing the animals.
However, there are many other theories about the causes of mass strandings. The first is that the behavior is linked to parasites. It’s often found that stranded animals were infested with large numbers of parasites. For instance, a type of worm is commonly found in the ears of dead whales. (2)Since marine animals rely heavily on their hearing to navigate, this type of infestation has the potential to be very harmful. Another theory is related to toxins, or poisons. These have also been found to contribute to the death of many marine animals. (3)Many toxins, as I’m sure you’re aware, originate from plants, or animals. The whale ingests these toxins in its normal feeding behavior but (4)whether these poisons directly or indirectly lead to stranding and death, seems to depend upon the toxin involved. Alternatively, it has also been suggested that some animals stranded accidentally by following their prey ashore in the confusion of the chase. Last year, (5)David Thurston monitored pilot whales that beached after following the squid ashore. However, this idea does not seem to hold true for the majority of mass strandings (6)because examination of the animals’ stomach contents reveal that most had not been feeding as they stranded. There were also some new theories, which link strandings to humans. (7)A growing concern is that loud noises in the ocean cause strandings. (8)Noises such as these caused by military exercises are of particular concern and have been pinpointed as the cause of some strandings of late.
(9)A final theory is related to group behaviour, and suggests that sea mammals cannot distinguish between sick and healthy leaders and (10)will follow sick leaders, even to an inevitable death. This is a particularly interesting theory since the whales that are thought to be most social—the toothed whales—are the group that strand the most frequently. The theory is also supported by evidence from a dolphin stranding in 1994. Examination of the dead animals revealed that apart from the leader, all the others had been healthy at the time of their death.
Without one consistent theory however it is very hard for us to do anything about this phenomenon except to assist animals where and when we can. Stranding networks have been established around the world to aid in rescuing animals and collecting samples from those that could not be helped. I recommend John Connor’s Marine Mammals Ashore as an excellent starting point if you’re interested in finding out more about these networks, or establishing one yourself.
选项
答案
military exercises
解析
本题与“人们尤其关注由……制造的噪音”相关。空格前的by提示空格处应填入名词或名词短语。录音提到,由军事演习制造的噪音是人们尤其关注的,故答案填入military exercises。
转载请注明原文地址:https://kaotiyun.com/show/zrJK777K
0
专业英语四级
相关试题推荐
Whatdoesthesentence"Thereisnoonebutlongstogotocollege."mean?
Hardshipdidnotendwithfreedom.Therewere【C1】______regionalvariationinboththestatusand【C2】______offreeblacksduring
Hardshipdidnotendwithfreedom.Therewere【C1】______regionalvariationinboththestatusand【C2】______offreeblacksduring
IfyouhavereallybeenstudyingEnglishforsolong,it’sabouttimeyou______abletowritelettersinEnglish.
Recentlygovernmentagenciesinsomebigcitieshavebeenstudyingthepossibilityofputtinga"pollutiontax"onprivatecars.
Whilealotofpeopleadvocatetheprominentroleofadvancedtechnologyinenvironmentalprotection,manyothersinsistthatpe
Arecentpollonuniversitystudents’self-disciplineshowsthatonly30%ofthesurveyedstudentshaveverygoodself-controla
WhenthechildsawsomethingfierceandviolentonTV,hewould______underthetableandcry.
Embracingglobalisation,Shanghaihasbecomeoneofthemost______citiesintheworld.
A.providesB.duetoC.constructionD.servingE.ascendingF.enterpriseG.despiteH.permitsI.qualifiedJ.adjusting
随机试题
下列哪种情况须预防性应用抗生素
A.一级结构B.二级结构C.三级结构D.四级结构E.模序结构(2005年)整条肽链中全部氨基酸残基的相对位置属于蛋白质的
儿童皮肤和肺蒸发的水分为“不显性失水”,是调节人体体温的一项重要措施,此年龄的失水量为
装运出口易腐烂变质食品的集装箱,应在装货前申请适载检验,未检验合格不准装运。()
(2018年)黄河公司因技术改造需要2019年拟引进一套生产线,有关资料如下:(1)该套生产线总投资520万元,建设期1年,2019年年初投入100万元,2019年年末投入420万元。2019年年末新生产线投入使用,该套生产线采用年限平均法计提折旧,预计
对当代学生来说,德育比智育更重要。学校的课程设计如果不注意培养学生的完美人格,那么,即使用高薪聘请著名的专家教授,也不能使学生在面临道德伦理、价值观念挑战的21世纪脱颖而出。以下各项关于当代学生的断定都符合上述断定的原意,除了:
Itisallverywelltoblametrafficjams,thecostofpetrolandthequickpaceofmodernlife,butmannersontheroadsarebe
Fornearlytenyears,theUnifiedModelingLanguage(UML)hasbeentheindustrystandardforvisualizing,specifying,constructi
根据下面的数据段定义:DSEGSEGMENTADW1234HBDB56HCEQUA+IDSEGENDS执行MOVB
A、Albright.B、Dole.C、Holbrooke.D、Hastert.D
最新回复
(
0
)