战国时期使秦国逐渐强大起来的社会改革是（    ）

19世纪六七十年代，领导德国完成统一大业的是（    ）

    Hello! I'm Linda. I have a good e-friend. Her name is Zhang Yun. Her English name is Betty. She is a Chinese girl, but she lives in the UK with her parents. Her father is a doctor and her mother is a teacher. She is ten years old. She call me big sister. She is good at English. She likes Chinese and I also like Chinese. She likes singing and playing basketball. This is my good e-friend. Do you want to know more?

从小肠吸收了营养物质的血液，经过（　　）次心脏才能被运动全身各处．