问题描述：
Shanghai has named YaoMing and LiuXiang Goodwill Ambassadors(亲善大使）
Yao Ming and Liu Xiang ______ _____ _____ Goodwill Ambassadors for Shanghai.
Yao Ming and Liu Xiang ______ _____ _____ Goodwill Ambassadors for Shanghai.
问题解答：
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