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阅读下面材料，在空白处填入适当的内容（1个单词）或括号内单词的正确形式。 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!
