采用适当的试剂，可从石灰石（主要成分是CaCO₃）中获得高纯度CaCO₃，其流程如图1：

①流程图中进行的操作1、操作2的名称是____ ；

②写出石灰石煅烧的化学方程式　____ ，该反应的基本反应类型是____ ．

③该流程图所示物质中，溶于水放出大量热的氧化物是____ ，该物质与水反应的化学方程式为____ ．

④使原料中各原子的利用率尽可能达到100%是“绿色化学”的核心理念之一．上述流程中有的物质可以再利用，该流程中可循环利用的物质是____ （填“化学式”）．

    Most visitors to Qindao will surely find a kind of special food in Shandong.It is very 1   and delicious.It is2pancakes.It's a traditional food in Shandong.It is popular with the local people.

    When we talk about pancakes in Shandong，there is a love3about them.In the past，a boy was poor，but studied hard.His girlfriend's parents didn't want the girl to4him.They didn't provide him with food.The clever girl made some pancakes just like paper and sent them to him.The boy ate these pancakes，went on studying hard and succeeded later.

    5you can find the pancakes in some big restaurants，you'd better have a try in the small 6.They are able to make7pancakes of the Shandong taste.

    Some pancakes are made 8flour(面粉)from the wheat(小麦).When they are9  on the hot pan(平底锅)，they are more delicious to eat.

    If you want to take some pancakes back to your friends and relatives，you can find some packed pancakes.They are made by some big10factories in some villages around Jinan.

下图为高等动物的一组细胞分裂图象，下列分析判断正确的是（   ）