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【简答题】
如下图是用棋子摆成的“T”字图案． 从图案中可以看出，第一个“T”字图案需要5枚棋子，第二个“T”字图案需要8枚棋子，第三个“T”字图案需要11枚棋子． （1）照此规律，摆成第⑧个图案需要几枚棋子？ （2）摆成第 个图案需要几枚棋子？(用含 的代数式表示) （3）摆成第2011个图案需要几枚棋子？
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【单选题】Mother Nature Shows Her Strength Tornadoes (龙卷风) and heavy thunderstorms moved across the Great Lakes and into Trumbull County on Saturday evening. The storms were dramatic and dangerous. George Snyde...
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A.
Right
B.
Wrong
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查看完整题目与答案
【单选题】Mother Nature Shows Her Strength Tornadoes (龙卷风) and heavy thunderstorms moved across the Great Lakes and into Trumbull County on Saturday evening. The storms were dramatic and dangerous. George Snyde...
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查看完整题目与答案