{
  "id": "ledu-chapter4",
  "book_id": "ledu",
  "name": "绿色生活 (Green Living)",
  "description": "Chapter on environmental protection, green transportation, and sustainable lifestyle. Explores traffic problems in big cities, World Car Free Day, and daily environmental actions.",
  "difficulty": "intermediate",
  "language": "zh-CN",
  "chapter_number": "4",
  "metadata": {
    "version": "1.0",
    "created": "2025-10-14",
    "updated": "2025-10-14",
    "source": "LEDU Textbook - Jiaotong University",
    "target_level": "intermediate",
    "estimated_hours": 10,
    "prerequisites": ["ledu-chapter1", "ledu-chapter2", "ledu-chapter3"],
    "learning_objectives": [
      "Master 90+ environmental and transportation vocabulary",
      "Understand green living concepts and practices",
      "Learn about traffic management in Chinese cities",
      "Practice reading comprehension with authentic texts",
      "Develop abbreviation recognition skills"
    ],
    "content_tags": ["environment", "transportation", "green-living", "pollution", "sustainability", "chinese-culture"],
    "completion_criteria": {
      "vocabulary_mastery": 90,
      "comprehension_score": 80,
      "exercises_completed": 20
    }
  },
  "vocabulary": {
    "生": {
      "pronunciation": "shēng",
      "type": "morpheme",
      "user_language": "to be born, life, to grow",
      "examples": ["出生", "生长", "生活", "发生"],
      "notes": "Self-explanatory character showing grass growing from earth"
    },
    "出": {
      "pronunciation": "chū",
      "type": "verb/morpheme",
      "user_language": "to go out, to come out",
      "examples": ["出门", "出主意", "出问题", "出汗"]
    },
    "交通": {
      "pronunciation": "jiāotōng",
      "type": "noun",
      "user_language": "traffic, transportation",
      "examples": ["交通便利", "交通安全", "交通部门"]
    },
    "拥堵": {
      "pronunciation": "yōngdǔ",
      "type": "verb",
      "user_language": "to be stuck in (a traffic jam)",
      "examples": ["交通拥堵", "道路拥堵"]
    },
    "解决": {
      "pronunciation": "jiějué",
      "type": "verb",
      "user_language": "to solve, to settle",
      "examples": ["解决问题"]
    },
    "发展": {
      "pronunciation": "fāzhǎn",
      "type": "verb",
      "user_language": "to develop",
      "examples": ["发展公共交通", "发展经济", "发展速度"]
    },
    "租": {
      "pronunciation": "zū",
      "type": "verb/noun",
      "user_language": "to rent; rent",
      "examples": ["租房", "租车", "房租", "租金"]
    },
    "控制": {
      "pronunciation": "kòngzhì",
      "type": "verb",
      "user_language": "to control, to dominate",
      "examples": ["控制比赛", "控制数量"]
    },
    "鼓励": {
      "pronunciation": "gǔlì",
      "type": "verb",
      "user_language": "to encourage",
      "examples": ["鼓励学生", "互相鼓励", "得到鼓励"]
    },
    "污染": {
      "pronunciation": "wūrǎn",
      "type": "verb/noun",
      "user_language": "to pollute; pollution",
      "examples": ["污染空气", "污染环境", "受到污染"]
    },
    "噪声": {
      "pronunciation": "zàoshēng",
      "type": "noun",
      "user_language": "noise",
      "examples": ["噪声污染"]
    },
    "资源": {
      "pronunciation": "zīyuán",
      "type": "noun",
      "user_language": "resource(s)",
      "examples": ["自然资源", "人力资源", "资源丰富"]
    },
    "提高": {
      "pronunciation": "tí//gāo",
      "type": "verb",
      "user_language": "to improve, to increase, to enhance",
      "examples": ["提高水平", "提高能力"]
    },
    "意识": {
      "pronunciation": "yìshí",
      "type": "noun/verb",
      "user_language": "awareness; to be conscious of, to realize",
      "examples": ["安全意识", "环境保护意识"]
    },
    "世界无车日": {
      "pronunciation": "Shìjiè Wúchē Rì",
      "type": "proper noun",
      "user_language": "World Car Free Day"
    },
    "朝阳区": {
      "pronunciation": "Cháoyáng Qū",
      "type": "proper noun",
      "user_language": "Chaoyang District (of Beijing)"
    },
    "法国": {
      "pronunciation": "Fǎguó",
      "type": "proper noun",
      "user_language": "France"
    },
    "抱怨": {
      "pronunciation": "bàoyuàn",
      "type": "verb",
      "user_language": "to complain"
    },
    "糟糕": {
      "pronunciation": "zāogāo",
      "type": "adjective",
      "user_language": "terrible, too bad"
    },
    "节约": {
      "pronunciation": "jiéyuē",
      "type": "verb",
      "user_language": "to economize, to save"
    },
    "告示": {
      "pronunciation": "gàoshi",
      "type": "noun",
      "user_language": "bulletin, official notice"
    },
    "法院": {
      "pronunciation": "fǎyuàn",
      "type": "noun",
      "user_language": "court of justice"
    },
    "通病": {
      "pronunciation": "tōngbìng",
      "type": "noun",
      "user_language": "common problem, common defect"
    },
    "便利": {
      "pronunciation": "biànlì",
      "type": "adjective",
      "user_language": "convenient, easy"
    },
    "出行": {
      "pronunciation": "chūxíng",
      "type": "verb",
      "user_language": "to go out, to travel"
    },
    "管理": {
      "pronunciation": "guǎnlǐ",
      "type": "verb/noun",
      "user_language": "to manage; management",
      "examples": ["交通管理部门"]
    },
    "部门": {
      "pronunciation": "bùmén",
      "type": "noun",
      "user_language": "department, section"
    },
    "修建": {
      "pronunciation": "xiūjiàn",
      "type": "verb",
      "user_language": "to build, to construct"
    },
    "地铁": {
      "pronunciation": "dìtiě",
      "type": "noun",
      "user_language": "subway, metro"
    },
    "自行车": {
      "pronunciation": "zìxíngchē",
      "type": "noun",
      "user_language": "bicycle"
    },
    "数量": {
      "pronunciation": "shùliàng",
      "type": "noun",
      "user_language": "quantity, amount"
    },
    "市民": {
      "pronunciation": "shìmín",
      "type": "noun",
      "user_language": "citizen, city resident"
    },
    "步行": {
      "pronunciation": "bùxíng",
      "type": "verb",
      "user_language": "to walk, on foot"
    },
    "公共交通": {
      "pronunciation": "gōnggòng jiāotōng",
      "type": "noun",
      "user_language": "public transportation"
    },
    "绿色": {
      "pronunciation": "lǜsè",
      "type": "adjective",
      "user_language": "green; environmentally friendly"
    },
    "诞生": {
      "pronunciation": "dànshēng",
      "type": "verb",
      "user_language": "to be born, to come into being"
    },
    "欧洲": {
      "pronunciation": "Ōuzhōu",
      "type": "proper noun",
      "user_language": "Europe"
    },
    "汽车": {
      "pronunciation": "qìchē",
      "type": "noun",
      "user_language": "car, automobile"
    },
    "空气": {
      "pronunciation": "kōngqì",
      "type": "noun",
      "user_language": "air"
    },
    "严重": {
      "pronunciation": "yánzhòng",
      "type": "adjective",
      "user_language": "serious, severe"
    },
    "提出": {
      "pronunciation": "tíchū",
      "type": "verb",
      "user_language": "to put forward, to propose"
    },
    "支持": {
      "pronunciation": "zhīchí",
      "type": "verb/noun",
      "user_language": "to support; support"
    },
    "开展": {
      "pronunciation": "kāizhǎn",
      "type": "verb",
      "user_language": "to launch, to carry out"
    },
    "活动": {
      "pronunciation": "huódòng",
      "type": "noun",
      "user_language": "activity"
    },
    "世界性": {
      "pronunciation": "shìjièxìng",
      "type": "adjective",
      "user_language": "worldwide, global"
    },
    "建议": {
      "pronunciation": "jiànyì",
      "type": "verb/noun",
      "user_language": "to suggest; suggestion"
    },
    "选择": {
      "pronunciation": "xuǎnzé",
      "type": "verb",
      "user_language": "to choose, to select"
    },
    "公交": {
      "pronunciation": "gōngjiāo",
      "type": "noun",
      "user_language": "public transportation (abbreviation)"
    },
    "利用": {
      "pronunciation": "lìyòng",
      "type": "verb",
      "user_language": "to use, to utilize"
    },
    "道路": {
      "pronunciation": "dàolù",
      "type": "noun",
      "user_language": "road, path"
    },
    "减少": {
      "pronunciation": "jiǎnshǎo",
      "type": "verb",
      "user_language": "to reduce, to decrease"
    },
    "了解": {
      "pronunciation": "liǎojiě",
      "type": "verb",
      "user_language": "to understand, to know"
    },
    "过多": {
      "pronunciation": "guòduō",
      "type": "adjective",
      "user_language": "too much, excessive"
    },
    "城市": {
      "pronunciation": "chéngshì",
      "type": "noun",
      "user_language": "city"
    },
    "环境": {
      "pronunciation": "huánjìng",
      "type": "noun",
      "user_language": "environment"
    },
    "危害": {
      "pronunciation": "wēihài",
      "type": "noun/verb",
      "user_language": "harm, danger; to harm"
    },
    "环保": {
      "pronunciation": "huánbǎo",
      "type": "noun",
      "user_language": "environmental protection (abbreviation)"
    },
    "加重": {
      "pronunciation": "jiāzhòng",
      "type": "verb",
      "user_language": "to worsen, to aggravate"
    },
    "同时": {
      "pronunciation": "tóngshí",
      "type": "adverb/conjunction",
      "user_language": "at the same time, meanwhile"
    },
    "应": {
      "pronunciation": "yīng",
      "type": "auxiliary verb",
      "user_language": "should, ought to (written language)"
    },
    "保护": {
      "pronunciation": "bǎohù",
      "type": "verb",
      "user_language": "to protect"
    },
    "生活方式": {
      "pronunciation": "shēnghuó fāngshì",
      "type": "noun",
      "user_language": "lifestyle, way of life"
    },
    "息息相关": {
      "pronunciation": "xīxī xiāngguān",
      "type": "idiom",
      "user_language": "closely related"
    },
    "随手": {
      "pronunciation": "suíshǒu",
      "type": "adverb",
      "user_language": "conveniently, in passing"
    },
    "做到": {
      "pronunciation": "zuòdào",
      "type": "verb",
      "user_language": "to achieve, to accomplish"
    },
    "水龙头": {
      "pronunciation": "shuǐlóngtóu",
      "type": "noun",
      "user_language": "faucet, tap"
    },
    "一直": {
      "pronunciation": "yīzhí",
      "type": "adverb",
      "user_language": "continuously, always"
    },
    "洗手": {
      "pronunciation": "xǐshǒu",
      "type": "verb",
      "user_language": "to wash hands"
    },
    "洗澡": {
      "pronunciation": "xǐzǎo",
      "type": "verb",
      "user_language": "to take a bath/shower"
    },
    "洗衣服": {
      "pronunciation": "xǐ yīfu",
      "type": "verb phrase",
      "user_language": "to wash clothes"
    },
    "关灯": {
      "pronunciation": "guān dēng",
      "type": "verb phrase",
      "user_language": "to turn off the light"
    },
    "电费": {
      "pronunciation": "diànfèi",
      "type": "noun",
      "user_language": "electricity bill"
    },
    "度": {
      "pronunciation": "dù",
      "type": "measure word",
      "user_language": "degree; kilowatt-hour (for electricity)"
    },
    "有害": {
      "pronunciation": "yǒuhài",
      "type": "adjective",
      "user_language": "harmful"
    },
    "气体": {
      "pronunciation": "qìtǐ",
      "type": "noun",
      "user_language": "gas"
    },
    "擦地": {
      "pronunciation": "cā dì",
      "type": "verb phrase",
      "user_language": "to mop the floor"
    },
    "冲厕所": {
      "pronunciation": "chōng cèsuǒ",
      "type": "verb phrase",
      "user_language": "to flush the toilet"
    },
    "塑料袋": {
      "pronunciation": "sùliàodài",
      "type": "noun",
      "user_language": "plastic bag"
    },
    "自备": {
      "pronunciation": "zìbèi",
      "type": "verb",
      "user_language": "to bring one's own"
    },
    "袋子": {
      "pronunciation": "dàizi",
      "type": "noun",
      "user_language": "bag"
    },
    "食用": {
      "pronunciation": "shíyòng",
      "type": "verb",
      "user_language": "to eat, to consume"
    },
    "野生动物": {
      "pronunciation": "yěshēng dòngwù",
      "type": "noun",
      "user_language": "wild animal"
    },
    "穿": {
      "pronunciation": "chuān",
      "type": "verb",
      "user_language": "to wear"
    },
    "毛皮": {
      "pronunciation": "máopí",
      "type": "noun",
      "user_language": "fur, pelt"
    },
    "选购": {
      "pronunciation": "xuǎngòu",
      "type": "verb",
      "user_language": "to select and purchase"
    },
    "农药": {
      "pronunciation": "nóngyào",
      "type": "noun",
      "user_language": "pesticide"
    },
    "新鲜": {
      "pronunciation": "xīnxiān",
      "type": "adjective",
      "user_language": "fresh"
    },
    "果蔬": {
      "pronunciation": "guǒshū",
      "type": "noun",
      "user_language": "fruits and vegetables (abbreviation)"
    },
    "包装": {
      "pronunciation": "bāozhuāng",
      "type": "noun/verb",
      "user_language": "packaging; to pack"
    },
    "绿色食品": {
      "pronunciation": "lǜsè shípǐn",
      "type": "noun",
      "user_language": "green food, organic food"
    },
    "标识": {
      "pronunciation": "biāoshí",
      "type": "noun",
      "user_language": "mark, sign, logo"
    },
    "工具": {
      "pronunciation": "gōngjù",
      "type": "noun",
      "user_language": "tool, instrument"
    },
    "汽油": {
      "pronunciation": "qìyóu",
      "type": "noun",
      "user_language": "gasoline, petrol"
    },
    "尾气": {
      "pronunciation": "wěiqì",
      "type": "noun",
      "user_language": "exhaust gas, emissions"
    },
    "公共场所": {
      "pronunciation": "gōnggòng chǎngsuǒ",
      "type": "noun",
      "user_language": "public place"
    },
    "室内": {
      "pronunciation": "shìnèi",
      "type": "noun",
      "user_language": "indoor, interior"
    },
    "吸烟": {
      "pronunciation": "xīyān",
      "type": "verb",
      "user_language": "to smoke"
    },
    "做好": {
      "pronunciation": "zuòhǎo",
      "type": "verb",
      "user_language": "to do well, to complete"
    },
    "垃圾分类": {
      "pronunciation": "lājī fēnlèi",
      "type": "noun",
      "user_language": "garbage sorting, waste classification"
    },
    "种类": {
      "pronunciation": "zhǒnglèi",
      "type": "noun",
      "user_language": "type, kind, category"
    },
    "分开": {
      "pronunciation": "fēnkāi",
      "type": "verb",
      "user_language": "to separate, to divide"
    },
    "放": {
      "pronunciation": "fàng",
      "type": "verb",
      "user_language": "to put, to place"
    },
    "当作": {
      "pronunciation": "dàngzuò",
      "type": "verb",
      "user_language": "to regard as, to treat as"
    },
    "有用": {
      "pronunciation": "yǒuyòng",
      "type": "adjective",
      "user_language": "useful"
    },
    "混装": {
      "pronunciation": "hùnzhuāng",
      "type": "verb",
      "user_language": "to mix and pack together"
    },
    "土地": {
      "pronunciation": "tǔdì",
      "type": "noun",
      "user_language": "land, soil"
    },
    "照顾": {
      "pronunciation": "zhàogu",
      "type": "verb",
      "user_language": "to take care of, to look after"
    },
    "附近": {
      "pronunciation": "fùjìn",
      "type": "noun",
      "user_language": "nearby, vicinity"
    },
    "树": {
      "pronunciation": "shù",
      "type": "noun",
      "user_language": "tree"
    },
    "定期": {
      "pronunciation": "dìngqī",
      "type": "adverb",
      "user_language": "regularly, periodically"
    },
    "浇水": {
      "pronunciation": "jiāoshuǐ",
      "type": "verb",
      "user_language": "to water (plants)"
    },
    "家庭": {
      "pronunciation": "jiātíng",
      "type": "noun",
      "user_language": "family, household"
    },
    "一员": {
      "pronunciation": "yī yuán",
      "type": "noun",
      "user_language": "a member"
    }
  },
  "grammar": {
    "随着": {
      "title": "随着…… - along with, as",
      "pattern": "随着 + Noun/Phrase, Result",
      "explanation": "Used to indicate that something changes as another thing changes",
      "examples": [
        {
          "chinese": "随着春天的到来，天气暖和起来了。",
          "pronunciation": "Suízhe chūntiān de dàolái, tiānqì nuǎnhuo qǐlái le.",
          "translation": "As spring arrives, the weather is getting warmer."
        },
        {
          "chinese": "随着年龄的增长，人的身体会发生很多变化。",
          "pronunciation": "Suízhe niánlíng de zēngzhǎng, rén de shēntǐ huì fāshēng hěnduō biànhuà.",
          "translation": "As age increases, people's bodies undergo many changes."
        },
        {
          "chinese": "随着城市的发展，环境污染问题也在加重。",
          "pronunciation": "Suízhe chéngshì de fāzhǎn, huánjìng wūrǎn wèntí yě zài jiāzhòng.",
          "translation": "As cities develop, environmental pollution problems are also worsening."
        }
      ]
    },
    "已-written": {
      "title": "已 (yǐ) - already (written language)",
      "explanation": "Written Chinese adverb meaning '已经' (already). More formal.",
      "examples": [
        {
          "chinese": "比赛已结束。",
          "pronunciation": "Bǐsài yǐ jiéshù.",
          "translation": "The competition has already ended."
        },
        {
          "chinese": "这项工作已完成。",
          "pronunciation": "Zhè xiàng gōngzuò yǐ wánchéng.",
          "translation": "This work has already been completed."
        }
      ]
    },
    "单-written": {
      "title": "单 (dān) - only, merely (written language)",
      "explanation": "Written Chinese adverb meaning '只' (only). More formal.",
      "examples": [
        {
          "chinese": "这部动画片不单孩子喜欢，大人也爱看。",
          "pronunciation": "Zhè bù dònghuàpiàn bù dān háizi xǐhuan, dàrén yě ài kàn.",
          "translation": "Not only do children like this cartoon, adults love watching it too."
        },
        {
          "chinese": "我每个月的花费很多，单交通费就要几百元。",
          "pronunciation": "Wǒ měi gè yuè de huāfèi hěnduō, dān jiāotōngfèi jiù yào jǐ bǎi yuán.",
          "translation": "My monthly expenses are high; transportation alone costs several hundred yuan."
        }
      ]
    }
  },
  "texts": [
    {
      "id": "main-text",
      "title": "世界无车日 (World Car Free Day)",
      "type": "main",
      "content": "有这样一个笑话："早上上班时间，你在北京朝阳区；坐一小时的车，你在朝阳区；再坐一小时，你还是在朝阳区。"\n\n交通拥堵是很多大城市的通病。为解决交通拥堵问题、便利人们出行，交通管理部门想了很多办法，比如：修建地铁、发展自行车租车服务、控制汽车数量等。每年9月22日"世界无车日"前后，北京市交管部门都会鼓励市民不开车，用步行、自行车、公共交通等绿色方式出行。\n\n"无车日"最早诞生于1998年的法国。那时候欧洲的很多城市里，汽车带来的空气污染、噪声污染越来越严重。1998年9月22日，法国一些年轻人最先提出"In Town, Without My Car!"，这个说法得到了人们的支持。后来世界上的很多城市都开展了"无车日"活动，"无车日"慢慢成了世界性的活动。"世界无车日"活动鼓励绿色出行，建议市民们更多地选择公交出行，一是为了更好地利用道路资源，减少交通拥堵，二是让人们了解汽车过多对城市环境的危害，提高人们的环保意识。",
      "wordCount": 376,
      "questions": [
        {
          "question": "第1段的笑话说的是什么情况？",
          "type": "open",
          "answer": "交通拥堵，坐车很久还在同一个地方"
        },
        {
          "question": "根据第2段，为解决交通拥堵问题，交通管理部门想了哪些办法？",
          "type": "open",
          "answer": "修建地铁、发展自行车租车服务、控制汽车数量"
        },
        {
          "question": "根据第3段，"世界无车日"是怎样诞生的？",
          "type": "open",
          "answer": "1998年法国，因为汽车带来的污染严重，年轻人提出无车日，得到支持"
        },
        {
          "question": "根据课文，说说"绿色出行"是什么意思。",
          "type": "open",
          "answer": "用步行、自行车、公共交通等环保方式出行"
        }
      ]
    },
    {
      "id": "environmental-tips",
      "title": "环保小贴士 (Environmental Tips)",
      "type": "extensive",
      "content": "随着城市的发展，环境污染问题也在加重。人们在抱怨城市空气越来越糟糕的同时，也应意识到环境的保护和每个人的生活方式息息相关。\n\n下面是生活中可以随手做到的几件环保小事。\n\n一、随手关水龙头，不要一直开着水龙头洗手、洗澡、洗衣服。\n\n二、随手关灯，这不只是为了节约电费，每节约一度电，空气中就会减少很多有害的气体。\n\n三、洗衣服后的水可以擦地或冲厕所等。\n\n四、买东西时不用塑料袋，出门购物带上自备的袋子。\n\n五、不食用野生动物，不穿野生动物毛皮做的衣服。\n\n六、选购不用农药的新鲜果蔬，买包装上有"绿色食品"标识的食品。\n\n七、多用公共交通工具，这样既可以节约汽油，又可以减少汽车尾气带来的空气污染。\n\n八、公共场所、室内工作场所、公共交通工具内不吸烟。\n\n九、做好垃圾分类，不同种类的垃圾分开放。分装垃圾是把垃圾当作有用的资源，混装的垃圾会污染土地和空气。\n\n十、照顾附近的一棵树，定期给它浇水，把它当作家庭里的一员。",
      "wordCount": 404,
      "questions": [
        {
          "question": "从衣、食、住、行这四个方面说说身边的环保小事",
          "type": "open",
          "answer": "衣：不穿野生动物毛皮；食：买绿色食品；住：节约水电，垃圾分类；行：多用公共交通"
        },
        {
          "question": "关于身边的环保小事，文中没有提到的是：",
          "type": "multiple_choice",
          "options": ["A用温水煮饭", "B节约用水用电", "C生活垃圾分类", "D不在公共场所吸烟"],
          "correctAnswer": "A用温水煮饭"
        }
      ]
    }
  ],
  "exercises": [
    {
      "type": "abbreviations",
      "title": "缩略语练习 (Abbreviations)",
      "description": "Practice recognizing and forming Chinese abbreviations",
      "questions": [
        {
          "question": "北京大学",
          "answer": "北大"
        },
        {
          "question": "电子邮件",
          "answer": "电邮"
        },
        {
          "question": "空中小姐",
          "answer": "空姐"
        },
        {
          "question": "奥林匹克运动会",
          "answer": "奥运会"
        },
        {
          "question": "交通管理部门",
          "answer": "交管部门"
        },
        {
          "question": "城市居民",
          "answer": "市民"
        },
        {
          "question": "公共交通",
          "answer": "公交"
        },
        {
          "question": "环境保护",
          "answer": "环保"
        }
      ]
    }
  ]
}