单选题 To be a good teacher, you need some of the gifts of a good actor: you must be able to 21 the attention and interest of your students; you must be a 22 speaker, with a good, strong, 23 voice which is fully under your control; and you must be able to 24 what you are teaching in order to make its meaning clear. 25 a good teacher and you will see that he does not sit still 26 his class; he stands the whole time when he is teaching; he walks about, using his 27 , hands and fingers to help him in his explanations, and his face to express feelings. Listen to him, and you will 28 the loudness, the quality and the musical note of his voice always 29 according to what he is 30 about.
The fact that a good teacher has some of the gifts of a good actor doesn"t 31 that he will indeed be able to act 32 on the stage, for there are very important 33 between the teacher"s work and the actor"s. The actor has to speak words which he has learnt by heart; he has to repeat exactly the 34 words each time he plays a certain part; 35 his movements and the ways in which he uses his voice are usually 36 beforehand. What he has to do is to make all these carefully learnt words and actions seem 37 on the stage.
A good teacher 38 in quite a different way. His students take an active part in his 39 ; they ask and answer questions; they obey orders; and if they don"t understand something, they will say no. The teacher therefore has to suit his act to the needs of his students. He cannot learn his part by heart, but must 40 it as he goes along.