问答题 5. In fact, cities outside the Arab world did not reach the same level of social development until centuries later. (Passage Four)

【正确答案】 事实上，阿拉伯世界之外的其他城市直到数个世纪后才达到同样的社会发展水平。

【答案解析】 cities outside the Arab world阿拉伯世界之外的其他城市。