Chinese, the most ancient of living writing system, consists of tens of thousands of ideographic characters, each character a miniature calligraphic composition inside its own square frame.
答案是A, 也就是原句正确。解释里说那个character是名词,这里我就不懂了,划线句怎么可以名词跟在名词后面?感觉上应该是each character have a ...inside its...这种句式啊。。至少来个动词吧。。。