________ the whole society care for children as well as their parents, children can grow healthily and happily

A．As soon as

B．Once

C．The moment

D．So long as

根据《社会物流统计制度及核算表式》的规定，我国社会物流保管费用的计算方法为：保管费用=利息费用+仓储费用+保险费用+货物损耗费用+信息及相关费用+配送费用+流通加工费用+包装费用+其他保管费用。