Section CDirections: In this section, there is one recorded conversation. After the conversation, there is a recorded question. Both the conversation and questions will be spoken two times. When you hear a question, you should decide on the correct answer from the 4 choices marked A), B), C) and D). Conversation 115.  
A、Making a sales plan. 
B、Doing a market survey.
C、Preparing an annual report.
D、Writing a business letter. 无解析