According to the last paragraph, which of the following is true？
A. Tutors will make a survey of the participants.
B. The participants will finish a survey as a course project.
C. The number of participants is restricted.
D. Effective managers will present lectures for participants.
查看答案
Some managers will not be promoted simply because______.
A. they are lacking in management strategies
B. they are not good at interpersonal skills
C. they cannot improve their technical skills
D. they cannot go up through the ranks
听力原文：M: Miss, what time is Flight 502 for Chicago due to depart？
W: It leaves at 3:50, but you must check in one hour before departure.
Q: When must the man check in？
(2)
A. 2:15.
B. 3:15.
C. 2:50.
D. 3:50.
A．Because he is in good health.B．Because it's a pleasure in his life.C．Because she cann
A. Because he is in good health.
Because it's a pleasure in his life.
C. Because she cannot bear the smell.
D. Because it makes him cough badly.
听力原文：What can we learn from the conversation？
(17)
A. David and Margaret once worked together.
B. Margaret's mother likes David very much.
C. Two old friends met unexpectedly.
David and Margaret used to go to school every day.
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