1. 练习材料 L51-3:Predicting the future Bagrit foresawa time when computers ...

1. 练习材料 L51-2:Predicting the future Itcan properly be describedas the fi...

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1. 练习材料 L50-3: New Year resolutions That was really unsettling, but I fe...

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1. 练习材料 Lesson31 Success story Yesterday afternoon Frank Hawkins was tel...

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1. 练习材料 Lesson29 Taxi! CaptainBenFawcetthasboughtanunusualtaxiandhasbeg...