题目

根据对话内容，填入适当的单词，短语或句子完成对话。 Michael: Hello, Nancy. You don’t look well. ____1___? Nancy: I have a cold. Michael: I’m ____2___to hear that. You should go to hospital and see a doctor. Nancy: I think I should. And are you going anywhere for vacation? Michael: I’m going to ____3___ Nancy: Europe? What are you doing there? Michael: I’m going hiking and sightseeing. Nancy: ____4___are you staying? Michael: Just one week. Nancy: Well, ___5____! Michael: Thank you.某同学设计了用一氧化碳与氧化铁反应来探究炼铁原理的装置，如图．（1）实验时先通入一会儿一氧化碳再加热，其目的是为了防止 ；从环保角度上看，上述装置有不足之处，改进措施是 ．（2）玻璃管中发生反应的化学方程式为 ．（3）铁架台是由铁合金制成的．铁的合金包括生铁和钢，二者含碳量较高的是 ；铁架台的防锈措施是 （写一点即可）．