中国大学MOOC: Students have got into the spirit, waging competitions to boost recycling and slash energy use in dorms.

Why does the author mention the Spanish Civil War at the beginning of the passage? A: It had great impact on the life of Spanish rice farmers. B: It is of great significance in the records of Spanish history. C: Rice farmers in the Ebro Delta are waging a battle of similar importance. D: Rice farmers in the Ebro Delta are experiencing as hard a time as in the war.

Why does the author mention the Spanish Civil War at the beginning of the passage? 未知类型：{'label': 'questionDesc', 'content': '请根据材料选择正确答案。', 'isMemberControl': 0, 'type': 181} 未知类型：{'label': 'source', 'content': '2018年6月 六级 卷二 仔细阅读1', 'isMemberControl': 0, 'type': 181} A: It had great impact on the life of Spanish rice farmers. B: It is of great significance in the records of Spanish history. C: Rice farmers in the Ebro Delta are waging a battle of similar importance. D: Rice farmers in the Ebro Delta are experiencing as hard a time as in the war.