1. (2017八上·深圳期中) 阅读下面短文，从短文后每小题的三个选项中选出能填入相应空白处的最佳选项。

    A teacher was giving a talk to his students on stress (压力) management. He raised a glass of water and asked them: "How 1 do you think this glass of water is?"

    The students began to think and2. Their answers are different, from 20g to 500g. "It does not matter on the real   3 . It depends on how long you hold it. If I hold it for a4 , it is OK. If I hold it for an hour, I will have an ache in my right arm. If I hold it for a day, you will have to call a 5. It is the exact same weight, but the longer I hold it, the heavier it becomes. What we have to do is to put the glass down, 6 for a while before holding it up again."

    "If we carry our burdens (负担) 7, sooner or later, we will not be able to carry on. The burden will become increasingly heavier. We have to8the burden every now and then, so that we can be refreshed and are able to carry on."

    So9you return home from work tonight, put the burden of work down. Don't carry it back home. You can pick it up tomorrow. Whatever burdens you have, let them down for a moment if you can. And learn to10ourselves. Life is short but amazing. Enjoy it!