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
23
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
A.tragedyB.actuallyC.preparedD.informE.visibleF.remindG.mea
OneofthestrangestandmostfascinatingthingsaboutScotlandistheLoch
某水利工程电网供电占98%,自备柴油发电机组(200kW机组2台)供电占2%。该
模拟数据由连续函数组成,又分为()等。A.图形数据 B.符号数据 C.格网数
女,9岁,乏力、纳差、体重下降1年,头晕、恶心、间断呕吐并发憋2个月。PPD(5
美国经济学家( )提出了人力资本的观点,称人力资源是比物质资本更重要的因素。A
稀土被誉为“新材料之母”,广泛应用于光学、电子信息、航空航天、核工业等尖端科技领
《普通高中美术课程标准(2017年版2020年修订)》中,按照美术门类将学习内容
(2017年真题)中药饮片调配后,心须经过药师复核无误后方发出,调配复核的内容有
建筑工程施工质量验收时,分部工程的验收应由( )组织。A.建设单位负责人 B
最新回复
(
0
)