人教社新版初中教材《世界历史》（第一册）在“西亚的封建国家”一课设计了这样一道练习题 :在地图上找出７～１０世纪期间曾在世界上存在过的四大帝国 ,并简述它们的情况。在《教参》拟定的答案中 ,把“四大帝国”界定为 :罗马帝国、拜占廷帝国、阿拉伯帝国、奥斯曼土耳其帝 The new edition of junior high school teaching materials of the People’s Education Society “World History” (Volume 1) designed such an exercise in the “feudal state of West Asia”: to find out on the map the top four countries that existed in the world during the 7th and 10th centuries. Empire, and briefly describe their situation. In the answers prepared by the “Guidance,” the “four empire” is defined as: the Roman Empire, the Byzantine Empire, the Arab Empire, the Turkish Ottoman Empire