(2018·全国卷Ⅰ)Duringmysecondyearatthecitycollege,Iwastoldt...
问题详情：(2018·全国卷Ⅰ)Duringmysecondyearatthecitycollege,Iwastoldthattheeducationdepartmentwasofferinga“free”course,calledThinkingChess,forthreecredits.I__1__theideaoftakingtheclassbecause,afteral...