题目内容

What is the third secret of happiness?The third secret is to believe that __________has some larger meaning, which can help us be happier.

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What do you need to do if you want to be happy?If you choose to find__________in your life, you will be happy.

将空气由酸性炉衬的转炉炉底吹入铁水以氧化其中的杂质元素并产生大量的热,借以炼成钢水的转炉炼钢方法,称为普德林炼钢法。

A. 对
B. 错

德国工业制造同盟的奠基人穆特休斯的贡献及影响。

What is the first secret of happiness?The first secret of happiness is that we should always be__________.

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