根据材料内容，选择最佳答案。

     China's Winter Olympians have been welcomed home as national heroes from Vancouver, Canada. The country enjoyed its best Winter Games results, collecting 11 medals in Vancouver—including(包括) 5 gold medals.
     With flowers and national flags in hands, many people waited at Beijing Airport for hours. Every member was received by a crowd of family members and friends. Hundreds of workers and fans welcomed the athletes and coaches back with color balloons and ribbons.
     Wang Meng who won three gold medals in Vancouver Winter Olympics said, “We have shown the Olympic spirit and our Chinese sports spirit at the Vancouver Olympics. We Chinese athletes didn't fear to meet the strong opponents (对手) and had good team work.”

2014年2月十二届全国人大常委会第七次会议通过决定，将每年12月13日设立为南京大屠杀死难者国家公祭日。日本法西斯在中国制造骇人听闻的南京大屠杀发生于(     )

下面是某校八年级探究性学习小组同学在一次野外活动中，观察某农田生态系统后绘制的食物网示意图，请认真分析下图并回答下列有关问题：

休谟说：“除了对知觉之外，我们对任何事物都没有一个完善的观念。”此观点认为（   ）

①存在决定思维            ②思维与存在没有同一性 

③思维与存在具有同一性    ④思维决定存在