首页
登录
职称英语
Mass Strandings of Whales1. The tide goes out suddenly, 【T1】______ the whales
Mass Strandings of Whales1. The tide goes out suddenly, 【T1】______ the whales
游客
2023-10-29
30
管理
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 [br] 【T4】
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
involved
解析
本题涉及导致鲸鱼搁浅的毒素类型。录音提到,是否会导致鲸鱼搁浅死亡取决于所涉及的毒素,故空格处填入involved。
转载请注明原文地址:https://tihaiku.com/zcyy/3140818.html
相关试题推荐
MassStrandingsofWhales1.Thetidegoesoutsuddenly,【T1】______thewhales
MassStrandingsofWhales1.Thetidegoesoutsuddenly,【T1】______thewhales
MassStrandingsofWhales1.Thetidegoesoutsuddenly,【T1】______thewhales
MassStrandingsofWhales1.Thetidegoesoutsuddenly,【T1】______thewhales
MassStrandingsofWhales1.Thetidegoesoutsuddenly,【T1】______thewhales
PassageTwo[br]WhatcausesthebiggerthreattowhalesaccordingtoWendyElio
Hearingwewill______candies,thechildrensuddenlygatheraroundus.A、assign
Thelittlegirl’sattentionwassuddenlycaughtbyaragdollwhich______puto
Hearingwewill______candies,thechildrensuddenlygatheraroundus.A、assignB
MassStrandingsofWhales1.Thetidegoesoutsudden
随机试题
Whatdoesthepassagemainlydiscuss?[br]Theauthormentionsthetrailpheromo
Thepredictabilityofourmortalityratesissomethingthathaslongpuzzled
Whowantstopayfor"D"-qualityplumbing(管道)?Flytheskieswitha"D"-
D由于二阶微分方程的通解中应该有两个独立的未知常数,故可排除A、B项。将C、D项代入原方程,C项代入后等式两边不相等,故排除C项,D项代入后等式两边相等。
素质教育的核心是创新精神和实践能力的培养。( )
改造主义课程理论的代表人物是()。A.利文斯通 B.贝格尔 C.施瓦
煎药的时间错误的是()。A.花叶及芳香类药物煎煮时间宜短B.根茎、果实、种子类
(2022上半年真题)李老师把作业从难倒易分成了ABC三类,他在班上特意交代:学
经纬仪水平角测量的的操作步骤是()。A.对中→整平→测角 B.安置→对中
施工进度计划的调整应包括的内容有( )。A.施工组织设计的调整 B.工作关系
最新回复
(
0
)