To my mind, in any(1) a____ ( 分析 ) of the (2) p____ ( 工作,职业 ) , few can match teaching. One needs to be (3) e____ ( 精力充沛的 ) , certainly, for occasionally it seems one hardly has time to(4) c_________ ( 屏住呼吸 ) . It can mean(5) s________ ( 熬夜 ) late in order to get lessons prepared on time. Nonetheless, I am(6) c________ ( 确信的 ) that the work is more (7) s________ ( 刺激的 ) than that of my(8) a_________ ( 行政的 ) colleagues. I certainly would not wish to(9) s_______ ( 转化、改变 ) , even though the pay is higher. With teaching, the (10) p_______ ( 速度 ) of life is more varied, allowing greater time for (11) r________ ( 深思 ) and research. Yet most of all it is the chance to see the (12) s________ ( 火花 ) of a fresh idea taking hold in a student's mind that is the most rewarding aspect of the job,(13) r_______ ( 偿还的 ) all one's efforts.