![MacwascyclingalongaroadinCanada’sYukon,halfwaythrougha2...]( "MacwascyclingalongaroadinCanada’sYukon,halfwaythrougha2...")
- 问题详情：MacwascyclingalongaroadinCanada’sYukon,halfwaythrougha2,750-milebiketourtoPrudhoeBay,Alaska.Hewascarryinga30-poundcampingbag,__41__hewasn’tmovingveryfast.Suddenly,heheardloudbreathingbehindhim.“Man,that’sabigdog!”hethought.Helookedtothes...
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