碳酸氢钠用于调节血液酸碱平衡（） A.非特异性作用 B.干扰核酸代谢 C.改变细胞周 发布时间：2017-08-08 01:33 │ 来源：www.tikuol.com 题型：单项选择题 问题： 碳酸氢钠用于调节血液酸碱平衡（）A.非特异性作用B.干扰核酸代谢C.改变细胞周围环境的理化性质D.补充体内物质E.影响生理活性及其转运体
题型：单项选择题 党的十八届三中全会提出，推进城市建设管理创新，建立透明规范的城市建设投融资机制，研究建立（）。A.城市基础设施金融机构 B.住宅政策性金融机构 C.城市基础设施、住宅政策性金融机构 D.股份合作金融机构 查看答案
题型：单项选择题 阅读理解。A．How a good teacher acts in classB．Acting:natural expression of fixed words and movementsC．Teaching:a studentcentered creative processD．Similarities between teaching and actingE．Differences between teaching and actingF．A good teacher,not necessarily a good actor 1. To be a good teacher,you need some of the gifts of a good actor:you must be able to holdthe attention and interest of your audience; you must be a clear speaker,with a good,strong,pleasing voice which is fully under your control；and you must be able to act what you are teaching in order to make its meaning clear.2. Watch a good teacher,and you will see that he does not sit unmoved before his class:he stands the whole time he is teaching; he walks about,using his arms,his hands and fingersto help him in his explanations,and his face to express feeling.Listen to him,and you will hear the loudness,the quality and the musical note if his voice always changes according to what he is talking about.3. The fact that a good teacher has some of the gifts of a good actor doesn't mean that he will indeed be able to act well on the stage,for there are very important differences 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 same words each time he plays a certain part,and even his movements and the ways in which he uses his voice are usually fixed beforehand.What he has to do is to make all these carefully learnt words and actions seem natural on thestage.4. A good teacher works in quite a different way.His audience takes an active part in his play:they ask questions,they obey orders,and if they don't understand something,they say so.The teachertherefore has to suit his act to the needs of his audience.He cannot learn his part by heart,but must invent it as he goes along.5. As a good teacher presently,you must take your audience as your friends,take care of them,helpthem and give them enough freedom and space.I have known many teachers who are fine actorsin class but are unable to take part in a stage play because their brains can't keep discipline:they cannot keep strictly to what another has written. 查看答案