题目内容
10．According to an ancient Chinese legend，the emperor Shen Nong discovered tea．分析 根据一个中国古老的传说，神农皇帝发现了茶．
解答 答案：discovered 根据an ancient Chinese legen"一个中国古老的传说"得知，此句表达的是过去发生的动作，所以要用一般过去时态；动词discover的过去式discovered，故填：discovered．
点评 判断动词的时态，要通过所给的时间状语或提示词去判断动词存在的状态．
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