1 . 海洋不仅给我们提供了充足的食物，而且它还保持了自然的平衡。
Not only does the ocean offer us sufficient food, but also it________ .
Not only does the ocean offer us sufficient food, but also it
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2 . I can see that Tim is_____ _____ _____ (难以平衡) his project and schoolwork. （根据汉语提示填空）
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3 . When he was running after his brother, the boy ____________ (失去平衡) and had a bad fall. （根据汉语提示完成句子）
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2020-09-27更新
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79次组卷
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5卷引用：【牛津译林版2020】必修一 Unit1 Section A Welcome to the unit & Reading
