精选优质文档-倾情为你奉上Part I Listening Comprehension ( 29 minutes ) Section A Directions: In this section, you will hear several conversations. At the end of each conversation, one or more questions will be asked about what was said. Both the conversations and the questions will be spoken only once. After each question there will be a pause. During the pause, you must read the four choices marked A), B), C) and D), and decide which is the best answer.1.A) PE727. B) PD672. C) PD673. D