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| Oil | |
| 作者姓名： | 余生泽 |
| 摘 要： | Almost everyone in the world uses oil(石油)1 some way. Without oil, the world will stop, so men 2 it everywhere. Oilmen drill(沙漠)foroil in deserts(钻探),in mountains and 3 thesea.Quite often they find 4 . but they search(寻找)for oil always 5 . Oil is very important |
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