关于Heb的百科

• Acollegeteacheroncegavealivelyclasstohisstudents．   Heb...

• 问题详情：Acollegeteacheroncegavealivelyclasstohisstudents．   Hebeganbyholdingupaglass（1）somewaterinit．Hehelditupforalltosee，andaskedthestudents，"（2）doyouthinkthisglassweighs？"   "50g!""100g!""125g!"thestudentsanswered．   "Ireallydon'tknowunle...
• 2020-01-156866