题目

In the English Reading Week, one of my classmates recommended a quote to us, __61__ goes like this; Your future depends on many things,   62   mostly on you. I can't agree   63   (much) with this view. It's true that our future   64     (determine) by many things, such as opportunities and help from others, but our own attitude, determination   65   hard work play a more important role. In   66   words, we are the master of our own future. Take Abraham Lincoln, for example. He was born in a poor family, and only received a   67      (limit) education in h18．硝酸铵钙晶体[5Ca（NO3）2•NH4NO3•10H2O]极易溶于水，是一种绿色的复合肥料．（1）硝酸铵钙晶体的溶液显酸性，原因是NH4++H2O?NH3•H2O+H+（用离子方程式表示）．（2）工业上生产硝酸铵钙的方法是以硝酸浸取磷矿石得到的粗硝酸钙（含硝酸钙、磷酸钙及硝酸）为原料制备，其生产流程为：①滤渣的主要成分是Ca3（PO4）2（填化学式）．②加入适量的碳酸钙后发生反应的离子方程式为CaCO3+2H+═Ca2++CO2↑+H2O．③硝酸铵是一种易分解的物质，保存和利用时，需控制在较低温度．230～400℃时，它会分解成空气中含量最大的两种气体，其反应的化学方程式为2NH4NO3$\frac{\underline{\;230～400℃\;}}{\;}$2N2↑+O2↑+4H2O．（3）生产硝酸铵钙工厂的废水中常含有硝酸铵，传统的净化方法是反硝化净化法．①NO${\;}_{2}^{-}$在酸性条件下可转化为N2，该反硝化方法可用半反应（同电极反应式）表示2NO3-+10e-+12H+═6H2O+N2↑．②目前常用电解法净化，工作原理如图所示（阳膜和阴膜分别只允许阳离子、阴离子通过）；Ⅰ．阳极的电极反应为2H2O-4e-═4H++O2↑，Ⅰ室可回收的产品为硝酸（填名称）．Ⅱ．Ⅲ室可回收到氮气的原因为电解时，Ⅲ室氢离子得电子发生还原反应使碱性增强，与向阴极移动的铵根离子反应生成氨气．