王羲之、颜真卿的作品让我们认识到书法是心灵和性格的表现。王羲之酒后即兴而作《兰亭集序》，字体式样________，笔画疏密有致，大小自由随性。尤其是全篇二十多个“之”字，个个________。此帖被称为“天下第一行书”。颜真卿的侄儿在安史之乱中义不从贼，全家惨遭杀害，颜真卿________，写下《祭侄文稿》，其字笔画粗重，字字独立，痛切之情读之可感。其字被称为“天下第二行书”。

    Have you ever been to the world's smallest bookstore?

    The World's Smallest Bookstore, whose official name is just these three words, sits quietly about 100 miles northeast of Toronto.

    The bookstore is about 10 feet by 10 feet，so it is easy to imagine how tiny it really is. The bookstore is open 24 hours a day. Inside the bookstore are various books, especially literary books and classic authors' works. So if you are looking for something less popular, you may get a bit disappointed there.

Another special feature of this bookstore is that each book only costs three dollars. All the expenses are paid on the honor system, which means buyers should make a note of what they've bought and leave their money by themselves. So the tools of the trade in this bookstore are quite simple: pens, papers, light bulbs and a label-maker.

    In order to catch passers-by's attention, the billboards (广告牌) of the bookstore are several times bigger than the store itself. With these large eye-catchers, many people are willing to stop by and have a visit.

吴京说他的创作灵感来自2011年海外撤侨真实事件，这是有史以来中国最大的海外撤侨行动。在这样的大背景下，中国英雄为了同胞和侨胞的安危，义无反顾的走进了硝烟与战火的异域中，“冷锋”是现实生活中无数中国英雄的集合与代表。

在影片中，吴京的武术风格快速简洁而又犀利无比，一招一式无不彰显了深厚中华武术功底，又有着他自己的武打风格；同时，空中吊臂和水下的各种运动镜头、枪战、打斗、爆炸等场景设计，则出自好莱坞著名指导萨姆---哈格雷夫斯之手，非常精彩。吴京多次说电影的成功也是所有主创人员及工作人员共同努力的结果。

电影最后出现了这样一行字幕“中华人民共和国公民，当你在海外遭遇不幸，不要放弃，请记住，在你身后有个强大的祖国。”每到这个画面，电影院里就会掌声雷动，很多人在屏幕上找到了情感归属感。“它符合、呼应了国势和民心，成为中国崛起的时代隐喻，也是中国梦的集中表达。”“中国英雄的魅力，正是中国核心价值观的感召力。”

已知碳酸亚铁在隔绝空气的条件下，受热易分解生成氧化亚铁和二氧化碳：在空气中加热，则生成氧化铁和二氧化碳．某化学兴趣小组用如图所示的装置模拟炼铁过程，并测定某样品中碳酸亚铁的含量（该装置气密性良好，B中氢氧化钠溶液足量）．

实验过程中，先打开K通入一氧化碳再加热；装置A中固体质量不再减少后，停止加热，待装置A冷却到室温后关闭K，实验测得装置A中固体质量减少了ag，装置B中液体质量增加了bg．

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