请在第__（50）__处填上正确答案。 查看材料A.But it also loo
正确答案,材料
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请在第__（50）__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.
请帮忙给出正确答案和分析，谢谢！
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正确答案：正确B
【答案】B【解析】空格前讲到奥普拉的工作已经扩大到社会改革上，空格后讲到她在美国参议员前发誓成立一个儿童施虐者的国家数据库，结合剩余选项，只有选项B“在1991年，她为国家儿童保护法做了大量工作”与此处内容相关。