Heb的精选

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Acollegeteacheroncegavealivelyclasstohisstudents.   Heb...

Acollegeteacheroncegavealivelyclasstohisstudents.   Heb...

2020-01-15
问题详情:Acollegeteacheroncegavealivelyclasstohisstudents.   Hebeganbyholdingupaglass(1)somewaterinit.Hehelditupforalltosee,andaskedthestudents,"(2)doyouthinkthisglassweighs?"   "50g!""100g!""125g!...