他所从事的工作使得他频繁现身于各国首府的教育部、教师研讨会以及艾滋病传播严重社区的中小学校教室。
His job takes him from the ministries of educations in country capitals to teacher workshops and primary and secondary classrooms in AIDS-devastated communities.
方法采用随机抽样的方法，对房山区9所中小学校食堂及366名在校就餐的学生进行膳食及营养教育相关情况的问卷调查。
Methods By random sampling method, 9 refectories and 366 students usually having their lunch at schools were drawn from Fangshan District, an anonymous questionnaire survey was conducted among them.
此次调查历时半年多，以全国10岁至18岁的在校学生为主，在全国106所中小学校开展。
The survey, which was conducted over 6 months, included mainly students between 10 and 18 in 106 middle and elementary schools across the country.
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