A lecturer was giving a lecture to his students on stress (压力) management. He raised a glass of water and asked them, “How heavy do you think this glass of water is?” The students' answers ranged from 20g to 500g. It doesn't matter on the absolute ____ (weigh). It depends on how long you hold ____. If I hold it for a minute, it is OK. If I hold it for an hour, I'll have ____ ache in my right arm. If I hold it for a day, you will have to call an ambulance. It's exactly the same weight, but the ____ (long) I hold it, the heavier it becomes. If we carry our burdens ____ the time, sooner or later, we won't be able to carry on, the burden ____ (become) increasingly heavier. What you've to do is to put the glass down, rest for a while before holding it up again. We've to put down the burden periodically, so that we can ____ (refresh) and are able to carry on.

    ____ you return home from work tonight, put the burden of work ____. Don't carry it back home. You can pick it up tomorrow. Whatever burdens you're having now on your shoulders, let it down ____ a moment if you can. Life is short, enjoy it!