测验
测验：数字看世界
哪个国家人口最多、预期寿命最长、人均 GDP 最高？10 道题均来自真实数据：在地图上选出国家，或猜数值更高还是更低。
题目从哪里来
每道题都使用地图所示年份的单项指标数值（缺失数据不会用更早年份补齐），且仅包括人口至少一百万的国家。各数值差距明显，不会出现平局。
- 人口 – World Population Prospects, United Nations (UN) · CC BY 4.0
- 人口密度 – FAO population estimates, Food and Agriculture Organization of the United Nations (FAO) · CC BY 4.0
- 预期寿命 – World Population Prospects, United Nations (UN) · CC BY 4.0
- 年龄中位数 – UN, World Population Prospects (2024) · CC BY 3.0 IGO
- 总和生育率 – World Population Prospects, United Nations (UN) · CC BY 4.0
- 城镇人口 – World Urbanization Prospects, United Nations (UN) · CC BY 4.0
- 65 岁及以上人口 – World Population Prospects, United Nations (UN) · CC BY 4.0
- 人均 GDP – Country official statistics, National Statistical Organizations and/or Central Banks · CC BY 4.0
- GDP – Country official statistics, National Statistical Organizations and/or Central Banks · CC BY 4.0
- 互联网使用率 – World Telecommunication/ICT Indicators Database, International Telecommunication Union… · CC BY 4.0
- 人均 CO₂ 排放量 – EDGAR (Emissions Database for Global Atmospheric Research) Community GHG Database, Joint… · CC BY 4.0
- 森林覆盖率 – FAOSTAT, Food and Agriculture Organization of the United Nations (FAO) · CC BY 4.0
- 可再生能源发电 – Ember · CC BY 4.0
- 人类发展指数（HDI） – UNDP, Human Development Report (2025) · CC BY 3.0 IGO
- 通电率 – SDG 7.1.1 Electrification Dataset, World Bank (WB) · CC BY 4.0