题目

Happiness is what everyone looks for.   41   someone says that he is happy. However,   42   makes him happy may not work for others. And even   43   , someone may spend all his life looking for happiness, but in vain. In the past, I tried my best to make myself happy. I thought if I could   44   get and do what I wanted to, I would be happy. Certainly, it was   45   , but I was disappointed. Though I could be happy at   46   , I couldn’t keep my happiness for a long time. Why? One day, when I told a friend of mine what I   47   about happiness, he smiled 化合物M结构如图所示．对化合物M的叙述错误的是（　　） A、M的分子式为C12H10O5B、M只能与溴水发生加成反应C、1mol M最多可和5mol H2发生加成反应D、1molM最多可消耗3molNaOH