题目

It  1  Sunday yesterday . We has   2  classes. I got up at 6:30  3 morning. Then my mother and I went to the shop. We wanted to do some   4  . My mother wanted to buy some food 5 super and I wanted to buy some school things: some books and a pen. The shop  6 early in the morning. 7  a lot of people in the shop. They were   8 , old and young. Some things in the shop were cheap ,some were not. We bought some food and school things. The people in the shop  9  friendly   10 1 A．is            B．was           C．it’s               （10分）A～G各物质间的关系如下图，其中B、D为气态单质．请回答下列问题：（1）填写物质E的一个俗名_______________________；（2）可选用不同的A进行反应①，若必须在加热下进行，其化学方程式为_____________；（3）反应②的化学方程式为___________________________________________________；（4）C、F、G的溶液通入B可转变成一种单一溶质水溶液，试写出该反应的离子方程式__________检验该溶液中阳离子的常用试剂是____________．