【正确答案】 C

【答案解析】原文：M：Hello, B&B Company. Jane’s speaking. How can I help you?W：Hello. May I speak to Mr. John Smith, please?M：I’ m afraid he’ s not available. He is in a meeting. Can I take a message?W：Yes, please. My name is Jean Cousy.M：OK. And how can Mr. Smith contact you?W：My phone number is 2034 7722.M：All right, Miss Cousy. What is the message about, may I ask?W：I want to discuss the publication of his book with him.M：OK. I will pass your message to Mr. Smith.W：Thank you.18. Why is Mr. Smith not available now?19. What does the woman want to discuss with Mr. Smith?问题问的是“女士想和史密斯先生讨论什么”。根据对话内容可知,女士说想和史密斯先生讨论他书的出版问题,故选C。