阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项，并在答题卡上将该项涂黑。
A
Betty and Harold have been married for years.But one thing still puzzles old Harold.How is it that he can leave Betty and her friend Joan sitting on the sofa,talking,go out to a ballgame,come back three and a half hours later,and they’re still sitting on the sofa?Talking?
What in the world,Harold wonders,do they have to talk about?
Betty shrugs.Talk?We’re friends.
