题目

【小题1】My father ________(居住) happily with my small family.【小题2】As a teacher, he must be _________(友好的) to all his students.【小题3】I hope ________(每个人) will achieve(实现) their dreams in the future!【小题4】When autumn comes, the ________(叶子) on the trees turn yellow.【小题5】Don’t go to play soccer! It’s ________(下雪) outside now. 答案：【小题1】lives  【小题1】friendly    【小题1】everyone  【小题1】leaves   【小题1】snowing解析: 略 向一定量的Fe．FeO．Fe2O3的混合物中，加入100 mL　1 mol/L的盐酸，恰好使混合物完全溶解，放出224 mL(S．T．P)的气体．所得溶液中加入KSCN溶液无血红色出现，混合物中铁元素的质量分数为 A． 68.6％ B． 77.8％ C． 81.4％ D． 无法计算