“甲午大败，成中国之巨祸”。下列集中体现了这一“巨祸”的史实是（   ）

联合国决定2011年为“国际化学年”（International Year of Chemistry），以纪念化学所取得的成就和增加公众对化学的欣赏和了解．下列观点或做法不符合这一宗旨的是（　　）

物联网、大数据、网购、电商与人们的生活联系越来越密切。“互联网+小龙虾”会带来怎样的惊喜？微信下单、第三方物流跑腿送虾、某电商平台上线加热即食的小龙虾产品……新的销售模式吸引了不少年轻吃货的关注。传统餐饮业遇到“互联网+”迸发出了巨大的潜力。这给我们的哲学启示是（    ）

①敢于改变联系的客观性，勇于创新

②学会运用综合思维方式，促进系统优化

③学会创造事物的本质联系，与时俱进

④善于根据事物间的固有联系，建立新的联系

D

    Jack is a 13-year-old boy.

    One day, his father asks him, "How many letters are there in the alphabet(字母表)?"

    "24." He says.

    "24?" His father asks loudly, "Are you sure?"

    "Sorry, I don't know." Answers the son.

    "You don't know? You are in school for 7 years and you don't know how many letters there are in the alphabet?" The father is very angry(生气的).

    His son says, "No. But let me ask you a question, dad. You often go to the post office(邮局). Please tell me how many letters there are in the post office."