Unit 9When was it invented?SectionA1. When was the telephone invented? 电话是什么时候发明的？【要点指津】invent 是及物...
Self Check & Reading1. Dr. Naismith divided the men in his class into two teamsand taught them how to play his...
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SectionBSectionBsalty:salty:intheend:intheend:bymistake:bymistake:byaccident:byaccident:accordingto:accordingto:咸的,含盐的.名词,s...
