科学家在天津市东部平原上发现了四道贝壳堤（海生动物贝壳及碎屑堆积的高地）且与现今海岸线基本平行。该现象说明了天津的（　　）

①以爱国主义为核心的中华民族精神

②以儒家思想为核心的中国优秀传统文化

③富有生命力、创造力和凝聚力的中华文化

④***在实践中形成的优良传统

A

    Hi! I'm Alan Miller．I'm an English boy．I'm 12．I'm in Grade Seven．My parents work in Tianjin now．My father is a teacher and my mother is a doctor．I have a brother, John．We are students in a middle school in Tianjin．He is 14 and he is in Grade Nine．We are in the same (相同的) bedroom．He puts his things in their right places，but my things are everywhere．

    Hello! My name is Zhou Wen．I am a Chinese girl．I'm 13．I'm a student of Grade Seven．Now I live in Beijing with my parents．My father is a doctor．My mother is a teacher．She teaches English in a school．My sister Zhou Xue is 3．She is with my grandparents．They are in Tianjin．My grandparents look after my sister．

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