阅读下列材料，回答问题。
材料一   三次灾难性的战争打破了中国人的闭关自守、骄傲自满：第一次是……同英
国的战争，第二次是……同英、法的战争，第三次是(1894—1895年)同日本的战争。在这些战争中所遭到的耻辱性失败，迫使中国人打开大门，结束他们对西方的屈尊态度，重新评价自己的传统文明。 
——斯塔夫里阿诺斯《全球通史》
（1）材料一中的“三次灾难性战争”使中国社会性质发生了怎样的变化?
（2）“往往巨大的历史灾难是以历史的进步为补偿的。”结合中国近代化起步的一个史实，对这一观点加以简要论述。
材料二 有人说在中华民族伟大复兴的征途上，……建立起新中国的***，让中国人民从此站了起来，而挽救了社会主义的邓小平为中国找到了一条使国家强盛、人民富裕的道路。     
——《复兴之路》解说词
（3）材料二所述的使“国家强盛、人民富裕”的过程中，探索出一条怎样的适合中国发展的道路？展望未来，在中华民族伟大复兴的征途上，你认为还将开创怎样的历史新篇章？

In many classrooms, it's not1to find students spinning (旋转) their pens2they listen to their teachers.
Pen-spinning is also popular3 Japanese students. It is a form of entertainment. Recently, a pen-spinning competition was held in Tokyo, Japan. Ryuki Omura, a 16-year-old high school student, became the first pen-spinning4.
   276 people took part in the competition. The came from different age groups. Some were students5 some were office workers. First, they 6 the videos of their pen-spinning skills to the organizer's website. Then some of them came to the last round in Tokyo. 7 of them had 30 seconds to show their skills in front of 400 people,8reporters and fans. Omura took a pen from his little finger to the rest fingers, then to his palm(手掌) and the back of his hand. His wonderful show made him 9 the champion.
   Omura said he began learning pen-spinning only about 14 months ago. He did 10 in the competition. If you like to spin your pen, you can practice it in your spare time. But when you are in the class, please don’t do that.

公园里有一个长方形花圃，长120米，宽50米，这个花圃的面积是____。