【正确答案】 B

【答案解析】[听力原文]
   Saoirse Ronan belongs to a new generation of actresses getting Hollywood's attention. The 21-year-old received an Oscar nomination for Best Actress for her delicately complex and understated performance as Eilis, an Irish single woman who immigrates to Brooklyn in the 1950s hoping for a better life.
   At 21 years old, Saoirse has made more than 20 movies. She was first nominated for an Academy award at age 13, for her role in the period drama Atonement. But Saoirse is facing stiff competition at the Oscars from another young peer.
   Brie Larson offers a riveting performance in the film Room, as an abducted woman, imprisoned in a small shack with her five-year-old son, a product of rape by her abductor.
   Larson is considered by many the Oscar frontrunner for Best Actress. And like Ronan, Larson at 26 comes with a film portfolio of more than 20 feature movies.
   How old is Saoirse Ronan?
此题为数字题。新闻中画线句提到这位获得奥斯卡最佳女主角提名的女星21岁。故答案为B。