被老外羡慕的我们本节课的重点词汇:

　　envy,envious:羡慕safe:安全、治安neighborhood: 街区suburb: 郊区drug addicts:吸毒的人mental illness:精神疾病患者gun ownership:枪支所有population density:人口密度bakery:面包店hairdresser:理发店anxious:不安grocery shopping: 买菜Armageddon:世界末日大战camping:露营tent:帐篷air drop:空投infrastructure:基础设施cost of living:生活成本nanny:保姆subway:地铁sense of optimism:乐观精神decline:衰落survey:调查cherish:珍惜skyscraper:摩天高楼diverse:多元化energetic:有活力的financial crisis: 金融危机unemployment rate: 失业率a very happening place:超有活力的地方