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一、必备知识基础练 Ⅰ.单词拼写 1.They plan to 　　　　　　(进口) advanced equipment to improve the efficiency of the factory.  2.Amidst the extreme cold of the South 　　　　　　(地极),unique wildlife has adapted to survive.  3.The athlete completed one 　　　　　　(圈) of the track,sweating but full of determination.  4.The terrible 　　　　　　(事故)at the factory made everyone realize the importance of safety.  5.After a successful 　　　　　　(手术),the old man gradually recovered his health and spirit.  6.She leaned over and 　　　　　　(低语)some en