听力原文：W: Hello ! M: Hello! May I speak to Mr. Jim, please? W: He's not here at the moment. May I ask who's calling? M: This is Zhang Hua speaking. I've just arrived in Los Angeles from China. W: Oh ! Mr. Zhang. How nice ! This is Mrs. Jim. I've heard Jim mention your name but we didn't know you'd arrive so soon. How many days will you stay in Los Angeles? M: About a week or so. And then I plan to go to San Francisco for a few days. W: Oh! Is there a number where I can. reach you? M: I'm staying at the Airport Holiday Hotel. The number there is 646-3100. My room number is 264. W: When Jim comes back, I'll tell him that you're in town, and we must spend an evening together. M: That'll be very nice. W: When is it most convenient to call you? M: Anytime between seven and ten p. m. would be fine. W: OK ! We'll call you. M: Then I'll be talking to you soon. Bye. Who is speaking to Mrs. Jim?