- 问题详情:Haveyouevernoticedadvertisementswhichsay“Learnaforeignlanguagein6weeks,oryourmoneyback!Fromthefirstdayyourpronunciationwillbeexcellent.Justsend…”andsoon?Ofcourse,itneverhappensquitelikethat.Theonlylanguagethatiseasytolearnisone’smotherton...
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