首页
登录
职称英语
Mass Strandings of Whales1. The tide goes out suddenly,【T1】______ the whale
Mass Strandings of Whales1. The tide goes out suddenly,【T1】______ the whale
游客
2023-10-30
54
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] 【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 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
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://tihaiku.com/zcyy/3144169.html
相关试题推荐
Hearingwewill______candies,thechildrensuddenlygatheraroundus.A、assign
Suddenly,Ned_____thetrucktotheright,narrowlymissingablondteenageon
MassStrandingsofWhales1.Thetidegoesoutsuddenly,【T1】______thewhale
MassStrandingsofWhales1.Thetidegoesoutsuddenly,【T1】______thewhale
MassStrandingsofWhales1.Thetidegoesoutsuddenly,【T1】______thewhale
MassStrandingsofWhales1.Thetidegoesoutsuddenly,【T1】______thewhale
MassStrandingsofWhales1.Thetidegoesoutsuddenly,【T1】______thewhale
Suddenly,Ned_____thetrucktotheright,narrowlymissingablondteenageona
MassStrandingsofWhales1.Thetidegoesoutsuddenly,【T1】______thewhales
MassStrandingsofWhales1.Thetidegoesoutsuddenly,【T1】______thewhales
随机试题
Intellectistothemind______sightistothebody.[2001]A、whatB、asC、thatD、
ScientistsWeighOptionsforRebuildingNewOrleansAsexperts
一个好的抽样检验方案,应该具备( )。A.当质量较好时,应该以高概率接受 B
当设计无规定时,跨度为8m的钢筋混凝土梁,其底模跨中起拱高度为()。A.8~
下列关于由电气装置故障造成危害的说法中,正确的是()。A.电气装置故障导致异常
某塑料制品生产线建于2013年1月,月生产能力30吨,总投资200万元,其中主机
17%淀粉浆A.润湿剂 B.主药 C.黏合剂 D.崩解剂 E.助流剂写出
女性,28岁,妊28周,一周来腰痛伴尿频,两天来低热,体温37°C。有时排尿后尿
(2018年真题)属于M胆碱受体阻断剂的平喘药是( )A.茶碱 B.沙美特罗
以下有关施工合同主体的说法中,正确的是( )。A.发包人必须是法人 B.承包人
最新回复
(
0
)