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After World War X, a lot of cities have been seriously damaged, and we need to rebuild those cities. However, some materials needed can only be produc 阅读全文
posted @ 2017-08-24 08:41
西北会法语
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Farmer John's cows refused to run in his marathon since he chose a path much too long for their leisurely lifestyle. He therefore wants to find a path 阅读全文
posted @ 2017-08-24 08:38
西北会法语
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There are n houses in the village and some bidirectional roads connecting them. Every day peole always like to ask like this "How far is it if I want 阅读全文
posted @ 2017-08-24 08:38
西北会法语
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