As early as the 6th century, Irish fishermen started raising dolphins in the Shannon estuary.A．RightB．WrongC．Not mentioned

单选题When does the speaker say that another significant change in instrument design took place?A In the early 19th century.B In the late 19th century.C In the early 20th century.D In the mid-20th century.

共用题干 Irish Dolphins May Have a Unique DialectIrish scientists monitoring dolphins living in a river estuary in the southwest of the country believe they may have developed a unique dialect to communicate with each other.The Shannon Dolphin and Wildlife Foundation(SDWF)has been studying a group of up to 120 bottle- nose dolphins in the River Shannon using vocalizations（发声）collected on a computer in a cow shed near the River Shannon.As part of a research project,student Ronan Hickey digitized and analyzed a total of 1,882 whistles from the Irish dolphins and those from the Welsh dolphins on a computer and separated theni into six fundamental whistle types and 32 different categories.Of the categories,he found most were used by both sets of dol-phins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 withbehavior like foraging（觅食）,resting, socializing and the communications of grown.ups with calves (幼仔）,"project leader Simon Berrow said.“Essentially we are building up what is like a dictionary of wordsthey use or sounds they mnake."Berrow,a marine biologist,said the dolphins'clicks are used to find their way around and locate prey.The whistles are communications."They do a whole range 0f other sounds like barks．groans and a kind of gunshot," he said. "The gunshot is an intense pulse（脉冲）of sound. Sperm whales use it to stun（击昏）their prey.”"When I first heard it I was surprised as I thought sperm whales were the onlyh species who used it. Wecan speculate the dolphins are using it for the same reason as the sperm whales,"Berrow said.References in local legend indicate there have been dolphins in the Shannon estuary for generations and they may even have been residents there as far back as the 6th century.They are regularly seen by passengers on the Shannon ferry and an estimated 25.000 tourists every year take special sightseeing tours on local boats to visit them.Whistles could also be used to communicate between adult dolphins and baby dolphins.A:RightB:WrongC:Not mentioned

共用题干 Irish Dolphins May Have a Unique DialectIrish scientists monitoring dolphins living in a river estuary in the southwest of the country believe they may have developed a unique dialect to communicate with each other.The Shannon Dolphin and Wildlife Foundation(SDWF)has been studying a group of up to 120 bottle- nose dolphins in the River Shannon using vocalizations（发声）collected on a computer in a cow shed near the River Shannon.As part of a research project,student Ronan Hickey digitized and analyzed a total of 1,882 whistles from the Irish dolphins and those from the Welsh dolphins on a computer and separated theni into six fundamental whistle types and 32 different categories.Of the categories,he found most were used by both sets of dol-phins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 withbehavior like foraging（觅食）,resting, socializing and the communications of grown.ups with calves (幼仔）,"project leader Simon Berrow said.“Essentially we are building up what is like a dictionary of wordsthey use or sounds they mnake."Berrow,a marine biologist,said the dolphins'clicks are used to find their way around and locate prey.The whistles are communications."They do a whole range 0f other sounds like barks．groans and a kind of gunshot," he said. "The gunshot is an intense pulse（脉冲）of sound. Sperm whales use it to stun（击昏）their prey.”"When I first heard it I was surprised as I thought sperm whales were the onlyh species who used it. Wecan speculate the dolphins are using it for the same reason as the sperm whales,"Berrow said.References in local legend indicate there have been dolphins in the Shannon estuary for generations and they may even have been residents there as far back as the 6th century.They are regularly seen by passengers on the Shannon ferry and an estimated 25.000 tourists every year take special sightseeing tours on local boats to visit them.The difference in eating habits between the bottle-nose dolphins arid the sperm wha1c, intcrcotcd the SDWFscientists.A:RightB:WrongC:Not mentioned

共用题干 Irish Dolphins May Have a Unique DialectIrish scientists monitoring dolphins living in a river estuary in the southwest of the country believe they may have developed a unique dialect to communicate with each other.The Shannon Dolphin and Wildlife Foundation(SDWF)has been studying a group of up to 120 bottle- nose dolphins in the River Shannon using vocalizations（发声）collected on a computer in a cow shed near the River Shannon.As part of a research project,student Ronan Hickey digitized and analyzed a total of 1,882 whistles from the Irish dolphins and those from the Welsh dolphins on a computer and separated theni into six fundamental whistle types and 32 different categories.Of the categories,he found most were used by both sets of dol-phins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 withbehavior like foraging（觅食）,resting, socializing and the communications of grown.ups with calves (幼仔）,"project leader Simon Berrow said.“Essentially we are building up what is like a dictionary of wordsthey use or sounds they mnake."Berrow,a marine biologist,said the dolphins'clicks are used to find their way around and locate prey.The whistles are communications."They do a whole range 0f other sounds like barks．groans and a kind of gunshot," he said. "The gunshot is an intense pulse（脉冲）of sound. Sperm whales use it to stun（击昏）their prey.”"When I first heard it I was surprised as I thought sperm whales were the onlyh species who used it. Wecan speculate the dolphins are using it for the same reason as the sperm whales,"Berrow said.References in local legend indicate there have been dolphins in the Shannon estuary for generations and they may even have been residents there as far back as the 6th century.They are regularly seen by passengers on the Shannon ferry and an estimated 25.000 tourists every year take special sightseeing tours on local boats to visit them.Sperm whales were the only species that can use pulses of sound to stun their prey.A:RightB:WrongC:Not mentioned

单选题"The ceremony has already started." "Look! The flag（）now."A is being raisedB is risenC is being rose D is raising

共用题干 Irish Dolphins May Have a Unique DialectIrish scientists monitoring dolphins living in a river estuary in the southwest of the country believe they may have developed a unique dialect to communicate with each other.The Shannon Dolphin and Wildlife Foundation(SDWF)has been studying a group of up to 120 bottle- nose dolphins in the River Shannon using vocalizations（发声）collected on a computer in a cow shed near the River Shannon.As part of a research project,student Ronan Hickey digitized and analyzed a total of 1,882 whistles from the Irish dolphins and those from the Welsh dolphins on a computer and separated theni into six fundamental whistle types and 32 different categories.Of the categories,he found most were used by both sets of dol-phins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 withbehavior like foraging（觅食）,resting, socializing and the communications of grown.ups with calves (幼仔）,"project leader Simon Berrow said.“Essentially we are building up what is like a dictionary of wordsthey use or sounds they mnake."Berrow,a marine biologist,said the dolphins'clicks are used to find their way around and locate prey.The whistles are communications."They do a whole range 0f other sounds like barks．groans and a kind of gunshot," he said. "The gunshot is an intense pulse（脉冲）of sound. Sperm whales use it to stun（击昏）their prey.”"When I first heard it I was surprised as I thought sperm whales were the onlyh species who used it. Wecan speculate the dolphins are using it for the same reason as the sperm whales,"Berrow said.References in local legend indicate there have been dolphins in the Shannon estuary for generations and they may even have been residents there as far back as the 6th century.They are regularly seen by passengers on the Shannon ferry and an estimated 25.000 tourists every year take special sightseeing tours on local boats to visit them.Irish dolphins attract tourists and over 25,000 people come to see them every year.A:RightB:WrongC:Not mentioned

（）was an important immigration spot in late 19th century and early 20th century.AEllis IslandBSan FranciscoCHawaiiDMiami

The Constitutional Monarchy started at the end of the （）century.A、17thB、16thC、15th

共用题干 Irish Dolphins May Have a Unique DialectIrish scientists monitoring dolphins living in a river estuary in the southwest of the country believe they may have developed a unique dialect to communicate with each other.The Shannon Dolphin and Wildlife Foundation(SDWF)has been studying a group of up to 120 bottle- nose dolphins in the River Shannon using vocalizations（发声）collected on a computer in a cow shed near the River Shannon.As part of a research project,student Ronan Hickey digitized and analyzed a total of 1,882 whistles from the Irish dolphins and those from the Welsh dolphins on a computer and separated theni into six fundamental whistle types and 32 different categories.Of the categories,he found most were used by both sets of dol-phins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 withbehavior like foraging（觅食）,resting, socializing and the communications of grown.ups with calves (幼仔）,"project leader Simon Berrow said.“Essentially we are building up what is like a dictionary of wordsthey use or sounds they mnake."Berrow,a marine biologist,said the dolphins'clicks are used to find their way around and locate prey.The whistles are communications."They do a whole range 0f other sounds like barks．groans and a kind of gunshot," he said. "The gunshot is an intense pulse（脉冲）of sound. Sperm whales use it to stun（击昏）their prey.”"When I first heard it I was surprised as I thought sperm whales were the onlyh species who used it. Wecan speculate the dolphins are using it for the same reason as the sperm whales,"Berrow said.References in local legend indicate there have been dolphins in the Shannon estuary for generations and they may even have been residents there as far back as the 6th century.They are regularly seen by passengers on the Shannon ferry and an estimated 25.000 tourists every year take special sightseeing tours on local boats to visit them.According to Simon Berrow they are building up a dictionary of words dolphins use or sounds they make.A:RightB:WrongC:Not mentioned

“The ceremony has already started. ”“Look! The flag () now. ”A、is being raisedB、is risenC、is being roseD、is raising

As early as the 6th century, Irish fishermen started raising dolphins in the Shannon estuary.A．RightB．WrongC．Not mentioned

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