2016年9月，******在中国杭州G20峰会上发言说：“中国对外开放，不是要一家唱独角戏，而是要欢迎各方共同参与；不是要谋求势力范围，而是要支持各国共同发展；不是要营造自己的后花园，而是要建设各国共享的百花园。”这告诉我们（    ）

①合作是事业成功的土壤，各国应相互依存、休戚与共

②合作可以消除国家之间的分歧与矛盾

③个体离不开集体，各国的发展都离不开世界

④应加强国际合作，同心打造人类命运共同体

阅读下列短文，从下面每小题的A、B、C、D四个选项中选择最佳选项。

Sweden, officially the Kingdom of Sweden, is a country in Northern Europe. Sweden borders (与......接壤) Norway and Finland, and is connected to Denmark by a bridge-tunnel. At 450,295 square kilometers, Sweden is the third-largest country in the European Union by area, with a total population of about 9.6 million. Sweden has a low population density (密度) of 21 persons per square kilometer with the population mostly living in the southern half of the country. Southern Sweden is mainly agricultural, while the north is heavily forested.

      Sweden was discovered as an independent country during the Middle Ages. In the 17th century, the country became bigger to form the Swedish Empire. The empire grew to be one of the great powers of Europe in the 17th and early 18th centuries. The eastern half of Sweden, present-day Finland, was lost to Russia in 1809. The last war in Sweden was in 1814. Since then, Sweden has been at peace, remaining a largely neutral (中立的) nation. The country played a good role during World Wars I and II, taking in refugees (难民) from German occupied Europe. With the ending of the Cold War, Sweden joined the European Union.

巴黎公社用革命方式打碎旧的国家机器，建立新的国家机器；由直接选举产生的代表一组成最高权力机关一公社委员会：所有公社人员的工资不得超过技术工人的工资等等。这些做法给我们留下的经验主要有           （   ）
①工农联盟原则                     ②人民民主原则
③人民公仆原则                     ④无产阶级专政原则

阅读下列材料，回答问题：

改革和统一是社会前进的动力。

材料一：及秦孝公用商君，坏井田，开阡陌，急耕战之赏，……倾邻国而雄诸侯。…至于始皇，遂并天下。

——《汉书·食货志上》

材料二：

材料三：秦灭六国，始皇采纳丞相李斯建议，废古封国制而以郡县制代替。

——《中国通史》

科学家在某种农杆菌中找到了抗枯萎病的基因，并以质粒为运载体，采用转基因方法培育出了抗枯萎病的金花茶新品种．下列有关说法正确的是（    ）