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沙发
 
 
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发表于 2013-1-23 13:55:44
                                            
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| 1月23日 
 Frog Species Found in Big Apple
 
 
 
 Scientists discover new species all the time-
 and aon the order of(近似) 15,000 a year.MoreOne of the latest additions to the tree of life is a new type leopard frog. Which might sound unremarkable, except for where it was found. NewYork City. But howisdoes froggoinggounnoticed in the big apple well, even experts have hard time telling this new species from its northern and southern cousinsandon looks along.(仅从外表上)But the new guy has a differentcrookcroak.(呱呱地叫)whichriseraised ecologists’suspeciessuspicions. So they tracked down four leopard frog populations with the unique call-including oneofwithin view ofStatue of Liberty and took DNA samples.
 As they suspected, the
 outoddcrookcroakers(噶叫的人) won't southern or northern leopard frogs or even thea mix. They had ageneticancestry of their own earning them new speciesstaps statues. Those resultsappearedappear in the journal molecularfinal geneticsphylogenetics(系统发生学)and evolution.
 The frog
 isare tough New Yorkers-the center ofthe raintheir range appears tobeginbe Yankee(美国佬) Stadium(体育场). in
 but the researchers say that the urban amphibians
 facedface threats like pesticides and infectious(传染性的) diseases. Not to mention real-life games of frogger.(辙叉工)
 口语: 今天联系了黄金口语与1月的鸡精两个题。
 
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