下图是我国东南沿海某城市的功能区分布示意图。A，B，C是三种不同的功能区。该城市是在合理规划的基础上形成的。读图完成下列各题。
商场去年电视、空调销售情况统计表
季度
台数
项目
第一季度
第二季度
第三季度
第四季度
电 视 机
800
500
300
600
空 调
450
400
850
150
电视机第四季度的销量最高
Today is Monday. It is sunny today. There is a sports meeting in our school. There are many students and players on the playground. Some basketball players are playing over there, and their classmates are watching. Some girls are running. There is a big tree on the playground. Some boys are jumping under the tree.
—Six.
在探究叶片光合作用的实验中，请完成实验步骤并分析：
季度