I find that my calculator has gone.
I once put my calculator in the reading room of the dormitory and take it for granted that no one in this dormitory building will take things others leave in the reading room since most the guys study in the r...

volunteer» 今天去了上海科技馆做志愿者。此次志愿者主要就是做做一些零碎的活。
早上6：50发车，8：00到的上海科技馆。这次的志愿者是科技馆与我们学校青年志愿者总队合作的。...