22，品红醛试剂又称席夫试剂，是由一种桃红色的三苯甲烷染料与硫酸作用后生成的无色试剂

There are many similarities between the teacher’s work and the actor’s. However, the fact that a good teacher has some of the gifts of a good actor __1__ mean that he will indeed be able to act well on the stage; for there are very important differences __2__ the teacher’s work and the actor’s work. The actor has to speak words which he has learned __3__; he has to repeat exactly the same work each time he plays a certain part; __4__his movements and the way he uses his voice are usually fixed __5__. What he has to do is to make all these carefully learned words and actions seem natural on the stage.
The good teacher works in __6__ different way. His audience takes an active part in his play, they ask and answer question, they __7__ orders, and if they don’t understand something, they say so. The teacher therefore has to suit his act __8__ the need of his audience which is his class.
I have known many teachers who were fine actors in __9__ but were unable to play a part in a stage-play because their brains would not keep discipline; they could not keep strictly to __10__.

小题1: A．not B．don’t C．doesn’t D．do

小题2: A．among B．with C．from D．between

小题3: A．by mind B．by the mind C．by heart D．by the heart

小题4: A．but B．if C．although D．even

小题5: A．ago B．before C．later D．long

小题6: A．very the B．very a C．quite a D．quite the

小题7: A．listen B．hear C．keep D．obey

小题8: A．for B．with C．to D．of

小题9: A．class B．stage C．life D．action

小题10: A．what another has written B．what another had written C．that another has written D．which another had written