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.