Here I want to try to give you an answer to the question: what personal qualities are (1) in a teacher Probably no two people would (2) exactly similar lists, but I think the following would be generally (3) . First, the teacher’ s personality should be pleasantly (4) and attractive. This does not rule out people who are physically (5) , or even ugly, because many such have great personal (6) . But it does rule out such types as the (7) , melancholy, frigid, sarcastic, frustrated, and over bearing: I would say too, that it (8) all of dull or purely negative personality. Secondly, it is not merely desirable (9) essential for a teacher to have a genuine (10) for sympathy -- a capacity to tune (11) to the minds and feelings of other people, especially, to the minds and feelings of children. (12) related with this is the capacity to be (13) --not, indeed, of what is wrong, but of the frailty and immaturity of human nature which (14) people, and again especially children, to make mistakes. Thirdly, I (15) it essential for a teacher to be both intellectually and morally honest. This does not mean being a saint. It means that he will be aware of his intellectual strength and (16) , and will have thought about and decided upon the moral principles by which his life shall be (17) . There is no contradiction in my going on to say that a teacher should be a (18) of an actor. That is part of the technique of teaching, which demands that every now and then a teacher should be able to (19) an act--to enliven a lesson, correct a fault, or (20) praise. Children, especially young children, live in a world that is rather larger than life. 4()
A. out
B. about
C. in
D. up
在SNMPv2中,一个实体发送一个报文,一般经过四个步骤:①加入版本号和团体名,构造报文;②把PDU、源和目标端口地址以及团体名传送给认证服务,认证服务产生认证码或对数据进行加密,返回结果;③根据要实现的协议操作构造PDU;④进行BER编码,产生0/1比特串。这四个步骤的正确次序是()
A. ①③②④
B. ③②①④
C. ④①③②
D. ②①③④