题目

听下面一段较长对话，回答以下小题。【1】What's the woman's job?A.A teacher. B.A manager. C.A doctor.【2】What's the woman's major at university?A.Computers. B.Typing. C.Management.【3】How long does the man like to work every day?A.Eight hours. B.Twelve hours. C.Fourteen hours.【4】What can we know about the woman?A.Her vacation is very long.B.She enjoys business travels.C.Her working hours are flexible.已知：如图，AB=CD，D、B到AC的距离DE=BF．求证：AB∥CD．