题目

听下面一段较长对话，回答以下小题。 （1） Why does David want to speak to Mike? A . To invite him to a party. B . To discuss a schedule. C . To call off a meeting. （2） What do we know about the speakers? A . They are colleagues. B . They are close friends. C . They've never met before. 答案：C C16．下列地理现象，与地球公转有关的是（　　）A．经度不同的地方时间不同B．日月星辰东升西落C．昼夜不断更替D．太阳直射点的南北移动