题目内容
砌筑砂浆配合比中，砌筑砂浆的分层度不得大于30mm，确保砂浆具有良好的（）。
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在声频范围内，将频率低于（）比的声音称作低频声。
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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. 10（）
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