题目

My mother seemed to be able to make dolls (洋娃娃) out of anything. She made some dolls for me and my two elder sisters. I 16 playing with them, but still, secretly, I hoped for a store-bought 17 like the one our rich cousin had. Her doll 18 open and close its blue glass eyes and even say Mamma. I 19 stopped admiring it and hoping to have one. However, my dream 20 came true when I was six. One day my father came back from his business trip with three 21 dolls! They were much smaller than our cousin’s doll and their eyes were just painted ones, but I did not 22 such differences. 化学方程式可表明 [　　] ①反应物和生成物各是什么　②符合质量守恒定律　③反应物和生成物各物质之间的质量比　④反应物和生成物之间分子(或原子)数的关系 A．①② B．①③ C．②④ D．都可表明