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. Mas
Mass Strandings of Whales 1. The tide goes out suddenly,【T1】________ the whales 【T1】________ 2. Mas
admin
2021-08-31
32
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】________
【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://kaotiyun.com/show/x73K777K
0
专业英语四级
相关试题推荐
Dutiesandtaxesarethemostobviousbarriertofreetrade.Theunderlinedpartmeans______.
A.causeB.chainC.componentD.criticalE.growingF.increaseG.inherentlyH.linkI.mutually
Whichofthefollowingdeterminers(限定词)canbeplacedbeforebothsingularcountnounsandpluralcountnouns?
A.benefitsB.differentC.eventuallyD.instrumentsE.movingF.multipleG.unsalariedH.numberI.paidJ.restrictK.
PASSAGETWO
(1)EdnaO’BrienhaslivedinLondonforafewdecades,butshespeaks,asshewrites,inavoiceinflectedwiththerhythmsand
NaturalandSyntheticRubberPeoplegetnaturalrubberfromrubbertreesasawhite,milkyliquid,whichiscalledlatex.Theym
Idon’tliketobuythingswithalabelof"thelatesttechnology",sincetheyareusually______toproblems.
A.negligibleB.overuseC.proceduresD.abnormalE.patientsF.potentialG.compliedH.collaboratedI.madeJ.involved
There______beanydifficultyinpassingtheroadtestsinceyouhavepracticedalotinthedrivingschool.
随机试题
氧原子的相对原子质量为()。
创伤时,如果处理时间过晚,伤口已经感染,则应()
某种公猪,80kg,不宜留作种用,欲对其行去势术,打开总鞘膜后暴露精索,摘除睾丸的最佳方法是将精索()
[2007年,第51题]如图4.5-3所示,物块A重力的大小W=10N,被用大小为FP=50N的水平力挤压在粗糙的铅垂墙面B上,且处于平衡。块与墙间的摩擦系数f=0.3。A与B间的摩擦力大小为()。
对于监理风险较大的监理项目,监理单位可以采用的分担风险的方式是( )。
用Word文字处理软件编辑文本时,要选择一个矩形区域,正确的操作方法是()。
昨天,我们学习了一个英文单词interest,今天又学习其形容词形式interesting,这样容易混淆interest的词性,这属于()。
(2012年上海.B卷.113)“东风夜放花千树,更吹落,星如雨。宝马雕车香满路。风箫声动,玉壶光转,一夜鱼龙舞。蛾儿雪柳黄金缕,笑语盈盈暗香去。众里寻他千百度,蓦然回首,那人却在,灯火阑珊处。”这首古诗描述了我国民间一个传统节令的景象,这个传统节令是(
下列选项中结果为0的是()。
Athiefdroppedawinninglotteryticket(彩票)atthesceneofhiscrime,buthehasbeengivenalessonin【C1】______.Themanwh
最新回复
(
0
)