氨碱法和侯氏制碱法的生产流程图可用如图表示，试回答下列问题．

相等质量的镁、锌、铁与足量稀硫酸反应情况如图所示，则Z表示的金属是（   ）

听短文，在短文中填写所缺单词
    Tom is a____boy. He is eleven years old. He's two years younger than his____, Jim. Tom is 150cm and Jim is 160cm. Jim is 50 kilos and Tom is 60 kilos. Tom wants to lose some weight, so he tries not to eat too much____. He also____more exercise than____.
    ____morning he gets up earlier than Jim and he goes____for____minutes. He usually does it after school. After dinner, Tom often goes for a ____, and Jim likes____at home. Now Tom is much____than Jim. Jim thinks he____more exercise now. He and Tom will do exercise tighter.

2016年10月1日有10万人在天安门广场参加升国旗仪式。人们唱国歌、向国旗行注目礼队礼敬礼等，这主要体现了人们的（    ）

—The film Operation Red Sea _______ in Huangshi last week and won high praise.

—Exactly. I have seen it twice.