听力原文:M: When we meet potential customers on a face-to-face basis, we always ask for permission to email them information about our services. Before writing an email, I always think about why I'm sending it; what I want to say and what reaction I want. Before clicking send button, I always review the email and try to put myself in the shoes of the customer——if I feel uncomfortable, I rewrite it or don't send it. (16)