1. (2023·全国甲卷·乙卷) 听材料，回答问题。

1. （1） What is the man doing?

   A . He's making a phone call. B . He's chairing a meeting. C . He's hosting a program.
3. （2） What makes Mrs. Johnson worried about her daughter in Africa?

   A . Lack of medical support. B . Inconvenience of communication. C . Poor transportation system.