题目

-He didn’t go to school yesterday, did he ?   -______, though he was not feeling well. A No, he did.  B No, he didn’t.  C Yes, he did.  D Yes, he didn’t 答案：C铜器长期暴露在空气中，表面会生成铜绿[其成分可表示为Cu2（OH）2CO3]，从其组成分析，预测铜绿能与________（任举一例）反应．