请在第__（49）__处填上正确答案。 查看材料A.But it also loo
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请在第__（49）__处填上正确答案。 查看材料
A.But it also looks at the celebrity"s presence on the Internet and in the media.
B.In 1991， she did a lot of work for the National Child Protection Act.
C.She was not a very successful woman.
D.She began broadcasting while still at high school.
E.It placed Winfrey at the top of its annual ranking of the 100 people last week.
F.The couple had been tight-lipped about their break-up.
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正确答案：正确D
【答案】D【解析】空格前讲到奥普拉于1954年出生于密西西比州一个穷苦的家庭，空格后讲到她19岁时成为最年轻的并且是第一个非裔美籍女主持人，结合剩余的选项，只有选项D“还在高中时她开始学广播”符合文意。