题目

阅读理解My best buddyI met you seven years agoat a stranger's house.When I looked at you,I knew we would be friends forever.Quickly, I ran across the roomand gathered you in my arms.I petted your long, floppy ears.I tickled your round, pink body.I smelled your sweet dog breath.After eight long weeks passed,you came to live with me.We ran through the green grass.We played hide-and-seek.We swam in the cool stream.Now you are older and slower,but you are still there for all I do.I share my secrets with you.I spend my happiest days with you.I will love you forever,My best buddy.1. My best budd以下是初中化学中一些常见物质相互转化的关系图（有些条件已省略）．已知：通常情况下乙和E均为黑色固体，B是气体．请回答：（1）推断物质的化学式：甲是______，乙是______．（2）D转化为C的基本反应类型是______反应．（3）B、E转化为D的化学方程式为______ 3Fe+4CO2