普通高中教科书 化学 必修 第一册 下载 pdf 电子版 epub 免费 txt 2025

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绪言

第一章 物质及其变化

第一节 物质的分类及转化

第二节 离子反应

第三节 氧化还原反应

整理与提升

第二章 海水中的重要元素——钠和氯

第一节 钠及其化合物

第二节 氯及其化合物

第三节 物质的量

整理与提升

实验活动1 配置一定物质的量浓度的溶液

第三章 铁 金属材料

第一节 铁及其化合物

第二节 金属材料

整理与提升

实验活动2 铁及其化合物的性质

第四章 物质结构 元素周期律

第一节 原子结构与元素周期表

第二节 元素周期律

第三节 化学键

整理与提升

实验活动3 同周期、同主族元素性质的递变

附录Ⅰ 实验室突发事件的应对措施和常见废弃物的处理方法

附录Ⅱ 一些化学品安全使用标识

附录Ⅲ 名词索引

附录Ⅳ 部分酸、碱和盐的溶解性表（室温）

附录Ⅴ 一些常见元素中英文名称对照表

附录Ⅵ 相对原子质量表

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• 作者：Screamy赵爷 发布时间：2021-07-25 16:15:23

  我觉得好的地方是以全球经济的眼光来解释了很多历史的变迁，颇让人信服！坏的地方是标题骗人，主要是讲“中世”为什么要写那么大的“唐”？从汉代开始写那么长的历史中间就显得混乱和潦草了。

• 作者：yyq 发布时间：2023-05-12 18:32:53

  印刷质量一把

• 作者：中指关节炎 发布时间：2021-09-01 11:01:02

  说实话不想打4星，不是说这本设定集不好，只是没有想象中那么好。

• 作者：wmwq2000 发布时间：2017-08-31 16:17:03

  比前面几本写的好，深刻了不少

• 作者：大路微尘 发布时间：2017-12-31 14:18:46

  入门者可以看看，对足彩有个大致的了解。里面的技术分析基本都过时了，没有参考意义。

• 作者：世界和平 发布时间：2019-08-26 21:47:40

  跟三聯那本一樣

• 方法很好，再按照老师的要求配合考GMAT多做题效果更好

  作者：418B2F8F2345483 发布时间：2013-05-01 10:22:30

• A young man climbs through ‘The Line of Beauty’

  作者：琼林 发布时间：2008-06-25 12:20:12

  ‘It is to be observed, that straight lines vary only in length, and therefore are least ornamental. That curved lines as they can be varied in their degrees of curvature as well as in their lengths, begin on that account to be ornamental. That straight and curv’d lines join’d, being a compound line, vary more than curves alone, and so become somewhat more ornamental. That the waving line, or line of beauty, varying still more, being composed of two curves contrasted, becomes still more ornamental and pleasing, insomuch that the hand takes a lively movement in making it with pen or pencil.’

  ---Hogarth, The analysis of Beauty (1753)

  The line of beauty in Alan Hollinghurst’s The Line of Beauty refers to the male arse and Hogarth's Ogee arch. Well, ‘The Line of Beauty’ is a gay literature and the Booker Prize winner novel.

  Nick Guest, the protagonist, a new Oxford graduate is living with the Fadden family as a guest in 80s. Meanwhile he is starting a relationship with a black man Leo. This is the first part of the story which Alan Hollinghurst called it ‘The Love-Chord’. It is an age of innocence. Nick meets Leo through a personal ad in newspaper. They immediately have sex in the Notting Hill garden. Nick also has a secret crash on the Fadden boy Toby, who was undoubtly STRAIGHT. Without surprise, under the theory of the line of beauty, he is direct but rather dull.

  The second part comes as ‘To Whom Do You Beautifully Belong?’ when Nick established a risky relationship with Wani after Leo’s leave. Wani becomes Nick’s lover as well as patron, who is an extremely beautiful, but corrupted wealthy Oxford lad. While it was English, there is always class. It seems that class structure does not disappeared from the contemporary novels, though class distinctions had themselves vanished (had it? It is claimed that modern Britain is a state of middle class. This is probably true, however, under and upper classes continue their existences.) While comparing with the similar theme of Jelinek’s The Piano Teacher, Zoë Heller’s Notes on a Scandal obviously takes great account on the class distinction of her characters.

  Nick, like Alan Hollinghurst himself comes from a middle class family, is a sensitive, aesthete young man. From Fedden’s Notting Hill House to Lord Kessler (Rachel’s brother)’s country estate, he is easily attached to the world with plausible painting, furniture, décor. It is reminiscent of Evelyn Waugh’s Brideshead Revisited: When a middle class boy comes across an upper class family.

  Nick’s encounter with Lord Kessler in the later’s library almost gives me an impression（or fascination）of a romantic attachment between the two. However, nothing beyond a little chat on Henry James and Trollope. An adventured young boy comes along with an experienced old man, isn’t it platonic! Well, the author has already taken it in his first novel ‘The Swimming Pool Library’.

  The last part of the story is ‘The End of the Street’. Wani is dying of AIDs. Nick is lucky to be negative. His climbing within the prestige circle finally ends up after he was thrown out from the Fedden family. Nick drifted as his surrounding drifted. But he can still see the beauty of the lines.

  …

  Beauty, midnight, vision dies:

  Let the winds of dawn that blow

  Softly round your dreaming head

  Such a day of welcome show

  Eye and knocking heart may bless,

  Find our mortal world enough;

  Nons of dryness find you fed

  By the involuntary power,

  Nights of insult let you pass

  Watched by every human love

  -- Lullaby by W.H.Auden

  The story ends while Nick is standing in the corner of the street after leaving the Notting Hill house. The tune of the long story is slow but smooth. The divided three parts compound a tip-over ‘U’ curved story line. In the first part Nick is climbing to the top of the world with the rising gradient, then the curves changes direction in part three while Nick falls down to the earth through the falling gradient. This is Hogarth’s ‘line of beauty’. Alan Hollinghurst’s The Line of Beauty’ is also aesthetic and intelligent.