单项选择题
Questions 13 to 15 are based on the following news. At the end of the news item, you will be given 45 seconds to answer the three questions. Now listen to the news
How many missing American servicemen have been positively confirmed dead in Vietnam so far（）
A．67. B．280. C．84. D．1648.
单项选择题 The speaker thinks that（）
单项选择题 The interviewee’s first job was with（）
单项选择题 The man was convicted for（）
