基本信息
unit 3 computers period one warming up & reading ⅰ.用适当的介、副词填空 1．________ time i have been changed quite a lot. 2．i began ________ a calculating machine ________ france ________ 1642. 3．after i was programmed ________ an operator who used cards ________ holes，i could “think” logically and produce an answer quicker than any pers
