[单项选择]BIRD SONG

1 One instance in the animal kingdom with parallels to human music is bird song. Much has recently been discovered about the development of song in birds. Some species are restricted to a single song learned by all individuals, while other species have a range of songs and dialects, depending on environmental stimulation. The most important auditory stimuli for birds are the sounds of other birds, including family or flock members and territorial rivals. For all bird species, there is a prescribed path to development of the final song, beginning with the subsong, passing through plastic song, until the bird achieves the species song or songs. This process is similar to the steps through which young children pass as they first babble and then mimic pieces of the songs they hear around them, although the ultimate output of human singers is much vaster and more varied than even the most impressive bird repertoire.
2
A. The syrinx is located near the windpipe, but the larynx is not.
B. The syrinx is larger than the larynx relative to body size.
C. The syrinx produces a wider variety of sounds than the larynx.
D. The syrinx uses much more of the passing air to produce soun

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[单项选择]BIRD SONG

1 One instance in the animal kingdom with parallels to human music is bird song. Much has recently been discovered about the development of song in birds. Some species are restricted to a single song learned by all individuals, while other species have a range of songs and dialects, depending on environmental stimulation. The most important auditory stimuli for birds are the sounds of other birds, including family or flock members and territorial rivals. For all bird species, there is a prescribed path to development of the final song, beginning with the subsong, passing through plastic song, until the bird achieves the species song or songs. This process is similar to the steps through which young children pass as they first babble and then mimic pieces of the songs they hear around them, although the ultimate output of human singers is much vaster and more varied than even the most impressive bird repertoire.
2
A. region
B. memory
C. variety
D. system

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Listening out for whale song is one way that ships can avoid colliding with whales. But what do you do if the whales aren’t singing One answer, developed by researchers in the Canary Islands, is to focus on the way the giant creatures mask the clamour of ocean noise.
No one knows how many whales are killed by ships each year, but collisions are thought to ac- count for up to a third of unnatural deaths. For the northern right whale, this means one or two individuals every year, and with only 300 animals left, that’s an unacceptable loss. There are three global hot spots for whale collisions: northern right whales are at risk in the Atlantic off the east coast of the US and Canada, fin whales in the Mediterranean, and sperm whales off the Canary Islands.
Last year, the Massachusetts-based international Fund for Animal Welfare attached hydro- phones to buoys and successfully listened out for right whale song in the North Atlantic. But since right whales
A. are the only Whales that can sing songs
B. are the only whales capable of masking the clamour of ocean noise
C. provide clues to scientists to study sea currents and waves
D. are on the very verge of distinction

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[单项选择]My favorite radio song is the one I first heard on a thick 1923 Edison disc I （）at a garage sale.
A. trifled with
B. scraped through
C. stumbled upon
D. thirsted for

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{{B}}Passage One{{/B}}

The deadly bird flu so far has claimed a confirmed 18 lives in Vietnam and Thailand, though the suspected toll is higher at 23. Millions of birds have been culled across Asia in an effort to stop the spread of the disease. The U.N. health agency said that testing of virus material from a 23-year-old Vietnamese woman who died of the HSN1 avian flu virus showed no human transmission. The woman and her 30-year-old sister were confirmed victims of bird flu. Their brother died of a flu-like illness but because his body was cremated (焚化), there was no chance to test for the virus. "WHO has today received the results from a study of virus isolated from a 23-year-old woman who is part of a family cluster in Vietnam under investigation as the first possible instance of human-to-human transmission," the agency said in a statement po
A. the whole Asia was influenced by the bird flu
B. the bird flu virus won’t transmit among human even if it mutate
C. H5N1 virus will no longer in existence after two years
D. the virus transmission among poultry can be controlled in about two years

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