Each year in the United States, many black teenagers _______ of school, either because they cannot keep up or they have to work to support their family.
B
暂无解析
健康教育目标属于组织目标中的()
简述常见的计划方法。
妊娠合并病毒性肝炎孕妇,临近预产期有出血倾向,治疗时应选用的药物是()
在小儿液体疗法静脉补液过程中需做到“两补”即_______、_______。
构成领导者非权力性影响力的因素是()