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 2. Mass strandings linked to parasites a. Evi
Mass Strandings of Whales 1. The tide goes out suddenly, 【T1】______ the whales 2. Mass strandings linked to parasites a. Evi
admin
2017-10-17
23
问题
Mass Strandings of Whales
1. The tide goes out suddenly, 【T1】______ the whales
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】______
This type of infestation can be very harmful
3. Mass strandings related to toxins or poisons
Toxins 【T3】______ from plants or animals
The whale ingests these toxins
Whether leading to stranding or not depends upon the toxin 【T4】______
4. Mass strandings caused by following their prey ashore
Example 【T5】______whales beached after following the squid ashore
Not true for most mass strandings
The animals’ stomach 【T6】______ reveal most had not been feeding
5. Mass strandings linked to humans
A growing concern: loud 【T7】______ made by humans cause strandings
Noises caused by 【T8】______ are of particular concern
6. Mass strandings related to group 【T9】______
Whales follow 【T10】______ leaders ashore
【T9】
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 traveling 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
behavio(u)r
解析
本题与“大量鲸鱼搁浅跟集体的关系”相关。录音最后一种理论提到,鲸鱼的大量搁浅与集体行为相关,故答案填入behaviour或behavior。
转载请注明原文地址:https://kaotiyun.com/show/ENDK777K
0
专业英语四级
相关试题推荐
Whydidn’tchildrengotoschoolalongtimeago?
Whatcausedthedoctorsandscientiststocallformoreattentiontoyoungpeople’sdeath?
Goodmorning,everyoneandwelcometotheEnglishforAcademicPurposesCenter.I’dliketobeginbybriefly【D1】______theservi
"Ifinditreallyattractivehowsuccessfulyouare,"mydatesaid,leaninginforakiss.Sure,itsoundslikealine.But
Inthesentence"Three-quartersofrespondentsthoughtitimportanttocomparetheirincomeswithothers",theitalicizedparti
A、Thinkofmoreinspiringideas.B、Accomplishtheprojectbyhimself.C、Followthroughtheproject.D、Reducethecosts.C
MakeYourHolidaysMoreMeaningfulI.Whattodobeforetheholidayseason1)【T1】______aweeklycalendar【T1】______2)starteli
AHealthyMixofReading,WritingandTechnologyI.Aboutstudents’readingA.Childrencannot【T1】theInternetinformationwell
In1943Germany’ssubmarines—theU-boats—werewinningthebattleoftheAtlantic.SuddenlyGermany’sU-boatlossesdoubledi
______wehavenotmadeanyarrangementforourpicnic.
随机试题
A.胆色素B.胆汁C.胆汁酸D.黄疸铁卟啉化合物的主要分解代谢产物是
血管紧张素转化酶(ACE)抑制剂卡托普利的化学结构是
根据《招标投标法》的规定,必须进行招标的项目有()。
根据我国《公司法》的规定,以下不属于普通股股东应承担的义务是()。
下列关于污秽地区配电装置设计的要求及防污闪措施,叙述正确的是何项?
某酒厂2011年春节前夕将自产无同类售价的粮食白酒4800斤赠送客户。其成本共计96000元,应当缴纳的消费税为()(成本利润率10%)。
关于命名××省省级优质发展企业的××〔2014〕×发14号为了加强企业合同管理,规范经营行为,维护市场秩序,在201
下列与电影有关的说法不正确的是()。
提倡教育的目的是为“完满生活做准备”的是英国教育家()。
Whatistherequirementforlanguage?Applicantsshouldbegoodatboth______WhatwillEMBdowithone’sapplicationifone
最新回复
(
0
)