读某历史名城图，回答下列问题。

名著阅读：读下面的小诗，回答问题。
                                                                                                 小小的花，
                                                                                                 也想抬起头来，
                                                                                                 感谢春光的爱——
                                                                                                 然而深厚的恩慈，
                                                                                                 反使她终于沉默。
                                                                                                 母亲啊！
                                                                                                 你是那春光吗？

东南亚和撒哈拉以南的非洲大部分国家属于发展中国家，两个地区的自然环境、历史文化 及风土民情各具特色．读图回答下列问题．

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汉字演变的脉络是（  ）