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
【T3】
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
originate
解析
本题涉及毒素与动植物的关系。空格所在处缺少动词,故空格处需填入动词或动词短语。录音提到,毒素来自于动植物,故空格处填入originate。
转载请注明原文地址:https://jikaoti.com/ti/HEiMFFFM
0
专业英语四级
相关试题推荐
Whatisthepassagemainlyabout?
Shouldcellphonesbeallowedinschools?Thishasbeenanintenselydiscussedquestionforyears.Thefollowingarethesupport
OverworkingOverworkingisstronglylinkedtoreducedphysicalwell-being/andalsotomentaldisorderssuchasdepression.
A、Byfillinginsomeonlineformsaboutlocalcrashhistory.B、Byidentifyingsomeblackspotsofthelocalcommittees.C、Byrec
Theconceptofpeaceisaveryimportantoneinculturesallovertheworld.Thinkabouthowwegreetpeople.Insomelanguages,
AGoodCompanionAgoodcompanionisbetterthanafortune,forafortunecannotpurchasethoseelementsofcharacter,/whi
A、Theydon’treallythinkaboutit.B、Theydislikeitverymuch.C、Theyworryaboutitgreatly.D、Theywantareform.A
Thegovernmenthaslauncheditsconsultationonbettermeasuresofchildpoverty,butitreallyhastobeasked,betterforwhom
[A]junction[I]manipulate[B]employ[J]plausible[C]literally[K]contrarily[D]ranks[L]statistical[E]rationalize[M
Shestartedtakingmoneyfromheremployer,inthemistaken______thatshewouldnotbediscovered.
随机试题
包交换也称为()
男性患者,20岁,两天前因吹风着凉后突发左眼流泪,口角歪斜。检查发现左侧额纹消失,左眼闭合不能,左鼻唇沟较浅,口角歪向右侧,四肢运动正常,对于该患者最佳的治疗药物是
某资料服从正态分布,理论上在范围内的变量值个数占全部例数的
以下关于意志品质的描述不正确的是
初产妇,24岁,妊娠38周,估计胎儿体重3600g,坐骨结节间径7cm,出口后矢状径6.5cm,正确的处理措施应为()
A.口舌、四肢及全身麻木,头痛、头晕,精神恍惚,牙关紧闭,呼吸衰竭B.恶心呕吐、口中有金属味,流涎,腹痛腹泻,口腔黏膜充血、牙龈肿胀溃烂C.严重脱水,低蛋白血症,水肿,精神错乱,幻觉,癫痫样发作D.胸闷、心悸,咽喉干痛,四肢无力,心电图显示房室传导阻
该数列是()。每户人均月收入指标是()。
根据以下资料,回答问题。“家电下乡”产品销售额增量最多的月份增加了几个亿?
Thereisacloserrelationshipbetweenmoralsandarchitectureandinteriordecoration【C1】______wesuspect.Huxleyhaspointedou
Whatisthemainpurposeofthispassage?Thepassagesuggeststhatthepresent-dayproblemwithregardtocomputersis______
最新回复
(
0
)