题目

短文填空 There is good news for the children in the country-side. We may still remember the girl __1__ big eyes. Her big eyes are __2_ us her dream. I wish to go to school! In  China, there are still many girls and boys___3_ her. They want  to go to school ,but their _4__ are too poor .If the family has two or three children, it is hard to pay the money for all the children. ___5_ the parents often ask girls to stay at home, and let ___6__ go to school.                                                                 �将铝丝插入到硫酸铜溶液中，可观察到铝丝表面出现红色固体，溶液由蓝色逐渐变为无色．该反应的化学方程式为    ．