easy,高手入~~~只寫個句子岩定錯

1.we are not allowed to do experiments if we have long hair.
2.we can dump matches and chemicals into the sink when we like to.
3.we should handle by ourselves if an accident happens when doing experiments.
4.the glass rod can be used to stir liquids.
5.we can return any unused solution to the reagent bottle.
6.we can know the room temperature accurately by feeling with our fingers.