The research question that guided this study was: what patterns of proactive and reactive attribute modification occur when children interact with mathematics virtual manipulative touchscreen tablet apps? 3.1. Setting and Participants The study occurred in interview rooms on the campus of a public ...
根据第一段"It's just typical that my journey is on one of the oldest lines,as well as one of the deepest.It's the hottest on the whole tube system.(我通常上班所走的路线刚好是地铁里最老、最深的一条线。)"可知,中央线是伦敦最古老的地铁线路之一。故选A项。(2)A...