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1问题背景高一的同学正处于长身体的时期,其中有不少女生都已有了月经周期。有的女生很担心月经周期对身体是不是有害,尤其会不会造成身体的重要元素如铁
1 background high school students are in a long period of physical, many of whom have had the girls menstrual cycle. Some girls are very worried about the menstrual cycle is not harmful to the body, in particular, will not cause the body’s important elements such as iron