听力原文：Teaching is supposed to be a professional activity requiring long and complicated

听力原文： Teaching is supposed to be a professional activity requiring long and complicated training. The act of teaching is looked upon as a flow of knowledge from a higher source to an empty container. The student's role is one of receiving information; the teacher's role is one of sending it. However, teaching need not be the province of a special group of people nor need it be looked upon as a technical skill. Teaching can be more like guiding and helping than forcing information into a supposedly empty head. If you have a certain skill you should be able to share it with someone. All of us, from the very youngest children to the oldest members of our cultures, should come to realize our own potential as teachers. We can share what we know, however little it might be, with someone who has need of that knowledge or skill.

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A．A professional activity.

B．Something special.

C．A technical skill.

D．Information.