Mesopotamian civilization was based on the tradition, culture and custom of one single group of ancient people living in the region。()
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Hagia Sophia was the perfect representation of Byzantine civilization, which is a mixture of Greek, Roman and Persian cultural elements。()
The basic units of the first human civilization were city-states。()
Reading of the Bible and his theological teaching made clearer Luther ’s idea abothe malpractices of the Church。()
供热锅炉常见的机械化运煤系统有哪几种?各自有什么特点?适用范围如何?