首页
登录
职称英语
Mass Strandings of Whales 1. The tide goes out sudden
Mass Strandings of Whales 1. The tide goes out sudden
游客
2023-10-27
14
管理
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】______ [br] 【T8】
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, 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. 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. 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 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, 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 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. A growing concern is that loud noises in the ocean cause strandings. Noises such as these caused by military exercises are of particular concern and have been pinpointed as the cause of some strandings of late.
A final theory is related to group behaviour, and suggests that sea mammals cannot distinguish between sick and healthy leaders and 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
military exercises
解析
本题与“人们尤其关注由……制造的噪音”相关。空格前的by提示空格处应填入名词或名词短语。录音提到,由军事演习制造的噪音是人们尤其关注的,故答案填入military exercises。
转载请注明原文地址:https://www.tihaiku.com/zcyy/3134695.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
Wemetalarge______ofwhalesonourvoyagetoAustralia.A、flockB、schoolC、her
Thelittlegirl’sattentionwassuddenlycaughtbyaragdollwhich_______puto
[audioFiles]2018m3x/audio_ezfj_ezflisteningd_201803_150[/audioFiles]Whales
Hearingwewill______candies,thechildrensuddenlygatheraroundus.A、assignB
MassStrandingsofWhales1.Thetidegoesoutsudden
随机试题
[originaltext]W:Stevenaskedifhecouldgetaridewithustothebeach.Dowe
Ms.Smithisvery______.Shehaschangedthedirector’smindaboutmanyissues.A
ShouldClassAttendanceBeOptional1.描述现在
数字出版合同的版权条款一般包括( )等内容。A.著作权人对合法拥有作品著作权的
《祝酒歌》施光南词曲,创作于1977年,生动地表达了粉碎四人帮后全国人民奔走相告
霍乱弧菌的选择性培养基属于强选择性的是A.碱性胆盐琼脂B.4号琼脂C.碱性琼脂D
可作为气雾剂抛射剂的是A、二氯二氟甲烷 B、三氯甲烷 C、二氯甲烷 D、乙
当智能辅控系统、输变电设备状态监测系统采用综合数据网进行信息传输时,与Ⅱ区综合应
D第一步,本题考查非整数数列中的分数数列。 第二步,利用反约分将原数列转化为,分子4,6,8,9,10,(12)是合数数列,下一项为12,分母0.5,1,2,
根据《招标投标法》下列关于招标投标的说法,正确的是()。A.依法必须招标的项目
最新回复
(
0
)