A:铁在潮湿的空气中易生锈
B:黄铜(铜与锌的合金)的硬度大于纯铜
C:可以用铁桶盛放硫酸铜溶液
D:可以用稀硫酸鉴别锌与铜的金属活动性强弱
看图,读一读,选择适当句子补全对话。
A. She can't see her pet dog.
B. I'm full now.
C. Can I have some water?
D. I am hungry, Mum.
E. I am sad.
一 How much are these oranges?
一