High School Chemistry Exam Simulation

A scanned-style Chinese chemistry exam paper in a two-column layout with a moderate difficulty level. The image looks like a realistic school test sheet formatted for printing or study use.

生成一张{argument name="科目" default="高中二年级期末化学试卷"}的图片。要求：{argument name="比例" default="4:3"}，扫描件样式，中文，两列排版，试题难度适中。