题目

下列化学方程式书写正确的是( ) A . Ca(OH)2+SO2=CaSO4+H2O B . 3H2SO4+2Fe=Fe2(SO4)3+3H2↑ C . Fe2O3+3HCl=2FeCl3+3H2O D . 2HCl+Ca(OH)2=CaCl2+2H2O 答案：D11．听下面一段对话，回答19至21三个小题．19．Who forget to write down the homework？A．Jenny．B．Kobe．C．Miss White．20．When will the math test？A．On Monday．B．On Tuesday．C．On Friday21．What's the homework for history？A．Writing a report．B．Preparing a test．C．Reading Page 20 in the book．