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"I went to the Great Wall yesterday," he said. He said that () spoke English very well.

答案: he完整句子:I went to the Great Wall yesterday, he said. He said ...
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已知角的终边经过点,且,则的值为.已知角 的终边经过点 ,且 ,则 的值为

答案: 10 试题分析:根据三角函数定义 .
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