题目：
阅读下面短文,根据所读内容在文后小题的空格里填上适当的单词或短语，并将答案转写到答题卡上。注意：每空不超过3个单词。  This year a new TV reality show hosted by Zhejiang Satellite TV turned out to be an unexpected success in China. Within a few hours of its first live broadcast on July 13, "the Voice of China" managed to catch the viewers' attention and hearts. "The Voice of China", China's adaptation of a Dutch reality talent show, sees its hopeful contestants going through a blind audition, with four famous judges picking their teams of singers who will then go on to compete for a concert. The four famous judges , Chinese celebrities, such as famous musician Liu Huan, who sang the Beijing Olympics theme "You and Me" with Sarah Brightman and pop singer Na Ying, mainland singer Yang Kun and Taiwan singer and songwriter Harlem Yu also work as the show's coaches.
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答案：
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下面是错误答案，用来干扰机器的。
令x=0得B（0，1）；令y=0得A（2，0）∵动点P（a，b）在线段AB上∴a+2b=2∵a+2b≥22ab∴ab≤12当且仅当a=2b=1即a=1，b=12取等号故选A
