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
48
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】______
【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 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
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/srJK777K
0
专业英语四级
相关试题推荐
Railwayistoacountry______bloodvesselistoaman’sbody.
TheLondonMarathonisadifficultrace.______,thousandsofrunnersparticipateeveryyear.
Sheremainsconfidentand______untroubledbyourpresentproblems.
Smokingissoharmfultohealththatitkills______eachyearthanautomobileaccidents.
OverworkingOverworkingisstronglylinkedtoreducedphysicalwell-being/andalsotomentaldisorderssuchasdepression.
BikingtoWorkMoreAmericansthaneverareridingtheirbicyclestoworkinsteadofdriving./Theyaredoingthisbecause
"It’ssaidthatyourjourneywasverypleasant."Thesentencemeansthat______.
[A]try[B]earlier[C]published[D]scientific[E]life[F]weight[G]classified[H]less[I]obese[J]linked[K]later[L]dieting[M]obs
Asunpleasantemotionsgo,anxietyisthesketchiest.It’savague,pit-of-the-stomachdreadthatsneaksuptoyou—thatuneasey
A、Theydon’tcarewhatjobshedoes.B、Theyhavebadfeelingsaboutherjob.C、Theythinkitisagoodjob.D、Theyhavenoworri
随机试题
下列享有行政规章制定权的主体是()。
多器官功能障碍综合征通常是指
躯体各部分空间位置感觉的形成,与下列哪些感觉传入有关
根管充填的目的是
太阳病,发汗未愈,风寒入里化热,身热不解,汗出而喘,舌苔薄白,脉滑数者,治疗应选用
在工程质量事故处理过程中,可能要进行必要的检测鉴定,可进行检测鉴定的单位是()。
按照公安部《关于在全国公安机关普遍实行警务公开制度的通知》要求,公安机关实行警务公开的内容主要有()。
税收是国家财政收入的重要来源,其特征是()。
在键入交换机命令时可使用缩写形式,在Switch#模式下,若键入con则表示()。
通常所说的32位计算机中的32是指【 】。
最新回复
(
0
)