Lastyear，somegroupsofstudentsintheircommunitymadeasurve...
问题详情：Lastyear，somegroupsofstudentsintheircommunitymadeasurveyabout“Howdopeoplespendtheirfreetime?”Thefollowingdiagramsshowsomeresultsofit．Diagram（1）：HoursforpeopleofdifferentageswhosurftheInternetinaw...