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Rebecca949 发表于 2013-8-13 09:44

VOA慢速英语2013.08.12

[audio]http://sound.yywz123.com/tingbbs/voa/voa20130812.mp3[/audio]




The cause of autism is not known, but several genes may play a part.自闭症的成因尚不得而知,但一些基因可能起到了作用.
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kaiyining 发表于 2013-8-14 16:29

good

tang24 发表于 2013-9-4 22:10

You're so great!!!!!

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