Have you ever heard of Jinjiang Hotel? It is on our busiest street. It's the best place to live in if you travel here. The hotel is only 0.5 kilometer from the biggest supermarket and the subway.

    It has three kinds of rooms for different people to use. The first kind is standard room, that is two beds with a bathroom. It offers you the air conditioner, the television and the telephone. Second is the single room, that has only one bed. Though it has only one bed, you can enjoy yourself, for the bed is really comfortable and the environment is really good. The last one we call commercial room. That is served for businessmen. The commercial room has the best quality. It also provides 24-hour hot water. You can have free tea in the afternoon. Imagine how nice as you drink tea as talking about your business with your partners. If you want to eat something, please just call 123, the food will arrive in ten minutes.

    One great thing is that it is very safe here because we have a few strong guards working day and night, so I'm sure you will have a great time living here.

阅读材料，回答问题材料一：秦始皇的生命是多姿多彩的，他建立了皇帝制度、建立了我国历史上第一个统一的多民族国家他为中国历代王朝奠定了权威性的规范，使得以后几百个皇帝只能在他所想的圈子里作小小的修正，而无力作巨大的改变，这充分显示了他强烈的独立人格和独立思考。……汉武帝在文治武功上都展现出了个人的雄才大略。他用巧妙的方式实现了权力集中，使统一的多民族国家得以巩固和发展，为中国古代社会的发展创造出了并不多见的晴空。

----徐卫民《秦汉历史文化研究》

材料二：实现国家统一是人民的共同愿望，北伐战争很快得到了广大工人农民和其它革命群众的热烈支持，这就形成了中国历史上空前未有的革命武力和民众结合的巨大力量……人民的力量有力的推动了形势的发展，革命势力迅速发展到长江黄河流域，使北洋军阀的统治趋于崩溃，有力地维护了国家统一。同时，***人：…开始认识到了开展武装斗争的极端重要性，中国革命进入了创建工农红军、进行土地革命的新时期。

---黄修荣、黄黎《国共关系纪实》

请回答：

某小组研究干旱对玉米叶片内生长素和脱落酸浓度的影响，数据见图8，据图分析可以得出的初步结论是（    ）