We had an awful school trip last week. Some students were late. Then we waited half an hour for the school bus, but it didn't arrive. Finally, our teacher took us to take the subway. It took over an hour. Then we walked a long way. When we arrived at the zoo, it was already 12:00. We were all tired and hungry. We wanted to see pandas, but there weren't any. There were some really smart dolphin（海豚）,but we didn't see the show because we arrived too late. We forgot our cameras, so we couldn't take any photos. Then it started to rain, and no one had an umbrella. We didn't see many animals because of the rain. So we went for lunch. We ate hamburgers. My friends also had some ice-cream. But I didn't have any, because I don't like it. I wanted French fries, but there weren't any in the shop. They were sold out! Finally we went back to school. We were wet, tired and stressed out. I didn't enjoy my school trip at all.

①给个位是3的数涂上红色，给十位是3的数涂上黄色，给个位和十位数学相同的数涂上蓝色。

②你从表格里发现了哪些有趣的排列？在小组内说一说。

羊年的新春灯会上，人们将街道两旁挂满了灯笼，并在街道一侧从1开始按顺序编号，直到街尾，然后从对面的灯笼开始往回编号，到编号为1的灯笼对面结束．每个灯笼与对面灯笼恰好相对．若编号36的灯笼与编号65的灯笼相对，那么所有灯笼的号码和为多少？

统一是人心所向，大势所趋。维护统一，巩固统一，始终是历史发展的主题。那些有利于国家统一的人或事在历史的长河中依然被后人传诵与铭记。阅读下列材料：

……

江山如此多娇，

引无数英雄竞折腰。

惜秦皇汉武，略输文采；唐宗宋祖，稍逊风骚。

一代天骄，成吉思汗，只识弯弓射大雕。

俱往矣，数风流人物，还看今朝。

──毛主席诗词《沁园春•雪》

请回答：

科技创新与经济、社会发展密切相关。下列表述符合这一观点的是（  ）