初一年级学生感受到的社会支持显著高于初二学生，其学校适应状况也显著好于初二学生。
The perceived social support of the first grade of junior high school students is more frequent and the school adjustment quality is better than the second grade.
方法整群抽取武汉市某中学初一、初二学生212名，用自编初中生生殖健康问卷进行调查。
Methods Stratified cluster sampling was used, survey was carried out by self-made scale among 212 students in Wuhan.
方法：对随机抽取的城乡初一、初二学生进行营养状况的体质调查和有关影响因素的问卷调查。
Methods: Students with random sampling in Grade 1 and Grade 2 in both rural and urban junior middle schools were investigated on nutrition and body constitution by questionnaire.
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