火柴头上的深色物质主要成分是KClO₃、MnO₂和Sb₂S₃（硫化锑），火柴盒侧面涂有一层红褐色物质，主要成分是红磷（P）和玻璃粉．划火柴时，借助摩擦产生的热，KClO₃在MnO₂催化下放出O₂，使红磷燃烧．同时Sb₂S₃也可与O₂反应生成Sb₂O₃和一种气体．Sb₂S₃燃烧生成Sb₂O₃和一种气体的化学方程式为（　　）

若$a,b\in R$，$i$是虚数单位，且$b+\left(a-2\right)i=1+i$，则a+b的值为 （   ）

    Food is very important. Everyone needs to 1 well if he or she wants to have a strong body. Our minds also need a kind of food.

    This kind of food is 2.We begin to get knowledge even when we are very young. Small children are 3 in everything around them.They learn 4 while they are watching and listening.When they are getting older，they begin to 5 story books，science books...，anything they like.When they find something new，they love to ask questions and 6 to find out the answers.

    What is the best 7 to get knowledge?If we learn 8 ourselves，we will get the most knowledge.If we are 9 getting answers from others and do not ask why，we will never learn well.When we study in the right way，we will learn more and understand 10.