铁矿石在______中冶炼时，得到的是含有较多______、______、____爱下问搜题

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问题填空题

铁矿石在______中冶炼时，得到的是含有较多______、______、______等元素的生铁．烧菜用的______、______、______等，大多是用______制造的；钢的性能比生铁优越，人们将生铁放在炼钢炉中进一步冶炼，把过多的______以及______经反应后形成炉渣被除去，便得到______．

答案

工业炼铁在高炉中进行，生铁和钢的区别主要在于杂质的含量，生铁中含C、Si、Mn等杂质较多，而钢所含杂质较少，而生活中许多常见用品都是有生铁制成的，如铁锅、暖气片、机床的底座等；

故答案为：高炉、C、Si、Mn、铁锅、暖气片、机床的底座、生铁、Si、Mn、钢．

完形填空

I am a lovely and happy boy. I      my parents, teachers, friends and classmates, and I also love my city and the world,     I love life. But sometimes I am      . I want to do everything well. I want to be a good boy. I want everyone to love me. If I do something      , I’ll feel unhappy, I’ll think I am good for nothing and I’ll be upset(失望)       some time. Then the persons who love me      tell me:
“ You can’t do all things better than anyone else. You can’t do all things      . You have to     who you are. You have to decide what comes first, and then do that.”
“You’ll have to learn to accept yourself. You’ll have to live with your limitations(局限). You are just      . You’re wonderful. It’s your duty to be who you are.”
It’s true that I can’t do       very well, but I’ll try my best. Then I’ll become myself-a lovely boy. So my world will become beautiful, full of happiness.

A．in surprise

B．interesting

A．other things

填空题

（）先后发表《抗日游击战争中的若干基本问题》和《独立自主地领导华北抗日游击战争》的文章，指出：“（）将成为华北人民反对日本帝国主义的主要斗争方式”。