职称英语理工类考试考前每日一练(18)

　　职称英语理工类考试考前每日一练

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　　Irish Dolphins may have a unique dialect

　　Irish scientists monitoring dolphins living in a river estuary in the southwest of the c,ountry believe they may have developed a unique dialect to communicate with each other.

　　The Shannon Dolphin and Wildlife Foundation1 has been studying a group of up to 1 20 bottlenose dolphins in the River Shannon2 using vocalisations collected on a computer in a COW shed3 near the River Shannon.

　　As part of a research project.student Ronan Hickey digitised and analysed a total of 1，882 whisties from the Irish dolphins and those4 from the Welsh dolphins on a computer and separated them into six fundamental whistle types and 32 different eategories5.of the categories，he found most6 were used by both sets of dolphins7一but eight were only heard from the Irish dolphins.

　　We are building up a catalogue of the different whistle types they use and trying to associate them with behaviour like foraging，resting，socialising and the communications of groups with calvesproject leader Simon Below said.Essentially we are building up what is like a dictionary of words they use or sounds they make.

　　Below，a nlanne biologist，said the dolphinsclicks are used to find their way around and locate prey.The whistles are communications.They do a whole range of other sounds like barks，groans and a kind of gunshot.he said.The gunshot is an intense pulse of sound.Sperm whales use it to stun their prey.

　　When I first heard it 1 was surprised as I thought sperm whales were the only species who used it.We can speculate the dolphins are using it for the same reason as the sperm whales，Berrow said.

　　References8 in local legend indicate there have been dolphins in the Shannon estuary for generatlons and they may even have been resident there as far back as the 6th century9.

　　They are regularly seen by passengers on the Shannon ferry and an estimated 25，ooo tourists every year take special sightseeing tours on local boats to visit them.

　　词汇：

　　Irish adj.爱尔兰的

　　socialise v.社交，交往

　　dolphin n.海豚

　　bottle-DOSe dolphin宽吻海豚

　　sperm whale巨头鲸

　　click n.咔哒声，喀嚓声

　　estuary n.河口，江H

　　vocalisation n.发声

　　shed n.小屋，棚

　　digitalise v.使数字化

　　whistle n.啸声

　　forage v.搜寻

　　prey n.被捕食的动物

　　gunshot n.射击声

　　groan n.呻吟，叹息

　　pulse n.脉冲

　　stun v.击昏

　　注释：

　　1.The Shannon Dolphin and Wildlife Foundation：香农海豚与野生生物基金会。

　　2.the Shannon River：香农河

　　3.cow shed：牛棚

　　4.those指代前半句的whistles。

　　5.Ronan Hickeyseparated them into six fundamental whistle types and 32 different categories：Ro.nan Hickey将啸声划分为6大类32种

　　6.most=most categories

　　7.both sets of dolphins是指the Irish dolphins和the Welsh dolphins。

　　8.References in local legend：当地传说中的有关说法

　　9.they may even have been resident there as far back as the 6th century：海豚可能早在公元6世纪就在香农河河口繁衍生息，resident是形容词，意思是居住的。

　　练习：

　　1.The difference in eating habits between the bottle-nose dolphins and the sperm whales interested the SDWF scientists.

　　A.Right

　　B.Wrong

　　C.Not mentioned

　　2.Ronan Hiekey analyzed almost 2000 different dialects of the bottle-nose dolphins.

　　A.Right

　　B.Wrong

　　C.Not mentioned

　　3.Of the 32 categories，eight were produced only by the Irish dolphins.

　　A.Right

　　B.Wrong

　　C.Not mentioned

　　4.Whistles could also be used to communicate between adult dolphins and baby dolphins.

　　A.Right

　　B.Wrong

　　C.Not mentioned

　　5.Sperm whales can produce stronger ultrasonic waves to kill their prey than dolphins.

　　A.Right

　　B.Wrong

　　C.Not mentioned

　　6.As early as the 6th century，Irish nshermen started raising dolphins in the Shannon estuary.

　　A.Right

　　B.Wtong

　　C.Not mentioned

　　7.Irish dolphins attract tousts and over 25，ooo people come to see them every year.

　　A.Right

　　B.Wrong

　　C.Not mentioned