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19世纪四五十年代，中国（）产生；19世纪六七十年代，中国（）产生，来源于商人、地主、官僚。
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单选题阅读《木兰诗》的教学实录（节选），按要求答题。师：伙伴在遇到花木兰女装出现时言行神态如何？生：“火伴皆惊忙：同行十二年，不知木兰是女郎。”师：找得非常好，下面我请几位同学来表演一下。（陆续叫的几个同学都没把伙伴那吃惊的神态表演出来）生：老师给我们表演一下吧！教师课前并无相关准备，一时显得比较尴尬，学生们开始窃窃私语起来。但这位教师并没有拒绝，而是迅速调整状态，接着便进入角色，用吃惊的神态表演：“啊，你是女人……”表演完后，学生给予了老师热烈的掌声对上述教学实录的评价，不正确的是（）。A
教师精心备好的一节课，结果却因出现一些始料不及的问题而影响教学效果，甚至出现一团糟的现象.教学效果不尽如人意B
教师富有应变能力和教学机智，能够应对偶然事件，保证教学过程的顺利进行C
课堂教育教学是一个错综复杂、瞬息万变的过程，这节课出现的问题主要体现在教师对学生所提问题的预见不充分D
对于课堂突发事件的处理，能够很好地检验一个教师的基本素质和各方面能力
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单选题Passage1One of the world's first videogames，Tetris，has turned thirty years old，and its brand is anything but old school.But what's kept people swiping and clicking to ensure each row of blocks stays aligned and disappears into the virtual world since its development in 1984 Soviet Russia？A combination of new platforms and an attracting psychological appeal.Maya Rogers, the CEO of Blue Planet Software, the sole agent of the Tetris brand, said the protection of the game's core over the last three decades has aided its longevity. As mobile and social become two of the largest sources for gaming these days, Tetris isn't showing any signs of losing its appeal. Currently appearing on over 50 different gaming platforms, from the 1983Nintendo Entertainment System(NES) to smartphones, Tetris is sold on over 425 milion mobile devices. More than 20 billion games of Tetris Battle have been played on Facebook, too. There's something psychologically entrancing about the game, that's kept people hooked through the years.Play a game of Tetris, said Rogers, and satisfy your craving to create order out of chaos.Plus, there's the added quality of playing Tetris and never feeling wholly fulfilled.There's no correct move that you can make,said Neubauer, a loyal player of the game who work as a senior analyst at Saibus Research, an independent research and advisory firm, The quest for the perfect move never ends.Tom Stafford,a professor of cognitive development and psychology at Sheffield University in the U.K, says that Tetris has been around so long because it transports gamers into a different realm when they play.It's a world of perpetually generating uncompleted tasks, he said. As he's said in the past, too, Tetris is the granddaddy of puzzle games like Candy Crush saga-the things that keep us puzzling away for hours, days and weeks.Tetris is pure game: there is no benefit to it, nothing to learn, no social or physical consequence,he added.It is almost completely pointless, but keeps us coming back for more.Which of the following would be the most appropriate title for the text?A
What Changes Did Tetris Make?B
Why Tetris Is So Addictive?C
How to Play Tetris Correctly?D
Who Loves Tetris Most?
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单选题教师理出生物教科书中涉及的新概念以及学生已有的相关概念，做出概念图用以分析教学内容。这属于生物教师备课的哪一环节？（）A
分析学生B
分析教材内容C
选择教学策略D
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