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
43
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
【T7】
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
noises
解析
本题涉及“鲸鱼大规模搁浅与人有关”的理论。空格前的loud提示空格处应填入名词。录音提到,人们越来越关注的一个点是巨大的噪音造成大量鲸鱼搁浅,故空格处填入noises。
转载请注明原文地址:https://kaotiyun.com/show/INDK777K
0
专业英语四级
相关试题推荐
Whydomostparentsfeelembarrassedwhentheirchildrengraduatefromhighschool?
Accordingtothepassage,whendidCanada’sbabyboombegin?
WhatwillhappeninHawaii’spublicschool?
Whydidn’tchildrengotoschoolalongtimeago?
Decemberisoftenthemonththatpeoplespend,spend,spend.Now,withJanuaryunderway,it’stimetopaythosebills,tighteno
Theconceptofpeaceisaveryimportantoneinculturesallovertheworld.Thinkabouthowwegreetpeople.Insomelanguages,
Analystssaidtheresultswerelargelyinlinewithexpectations.Theunderlinedpartmeans______.
A、Theydon’treallythinkaboutit.B、Theydislikeitverymuch.C、Theyworryaboutitgreatly.D、Theywantareform.A
EdnaO’BrienhaslivedinLondonforafewdecades,butshespeaks,asshewrites,inavoiceinflectedwiththerhythmsandacc
A、Helockedhissuitathome.B、Hecouldn’tpayfordry-cleaning.C、Hehadnotimetofetchhissuit.D、Hedidn’tdry-cleanhis
随机试题
Recentyearshavewitnessedanincreaseinthenumberofpeoplewhofeelguiltyorashamedaboutwhattheyperceivetobenegati
在多式联运合同中,各实际承运人在运送中造成迟延或者旅客或货物的损害时,承担赔偿责任的主体是()
痉挛对患者的不利影响不包括
给予研究对象某种干预措施的研究是一般而言,流行病学研究的起点是
地籍图属于大比例尺图,()不适应其比例尺。
某商品单价为“每件CIF净价伦敦30英镑”指的是()。
甲股份有限公司(本题下称“甲公司”)为上市公司,20×7年至20×9年与企业合并、长期股权投资有关的资料如下:(1)20×7年1月20日,甲公司与无关联关系的丙公司(非上市公司)签订购买其20%股权的合同,支付购买价款2000万元。(2)
城市是人类文明精华的汇聚之地,数千年来政治、经济、文化和科技的光芒在此交相辉映,然而演进至今,城市却遭遇各种挑战,诸如人口膨胀、饮水卫生、安全隐患、环境污染和交通拥挤等问题日益凸显。如果不加以有效解决,这些问题终将严重制约城市的发展。这段文字的主旨是(
某ARM汇编语言程序要调用子程序,子程序名为MySubrutine,则调用该子程序的指令为__________【55】,子程序返回调用程序的指令为__________【56】。
Whatdoweknowabouttheoriginoflanguage?
最新回复
(
0
)