结构推理 Millions of people are moving away from rural areas in other countries. In other words, in much of the world there is an exodus from the countryside to the cities.

【正确答案】a mass movement away from a place

【答案解析】根据In other words可知，后一句话是对前一句话的解释，因此move away和exodus为同义表达。exodus意思为“(许多人)离去，出去”。