四六级估分

　　The seventh season of America's Got Talent, a reality television series, is scheduled to premiere May 14, 2012. This season will be the first season without judge Piers Morgan. He will be replaced by radio personality Howard Stern, as announced on his Sirius XM radio show on December 15, 2011. Because of Stern's commitments to his radio program, the show will also move to New Y... (展开全部)