氢气燃烧生成液态水的热化学方程式是：2H₂（g）+O₂（g）═2H₂O（l）△H=﹣572kJ/mol请回答下列问题：

（1）生成物能量总和____ （填“大于”、“小于”或“等于”）反应物能量总和．

（2）若2mol氢气完全燃烧生成水蒸气，则放出的热量____ （填“＞”、“＜”或“=”）572kJ．

阅读理解

　　William Jefferson Clinton(威廉·杰斐逊·克林顿)was born in a small town of America. He was born on 19th August, 1946. He was president of the USA from 1993 to 2001.

　　Wang Fei is a teacher. He was born in Shanghai and he teaches in a middle school. He is very friendly to his students. He lives in a big room with a TV, a kitchen, a bedroom and a bathroom. He is very young but very nice.

伯利克里说：“不关心城邦事务的人，有人称其为心情平和的人，我们雅典人称其为废物。它毋需公民多少政治才能，关键是每个公民都应本着一切从城邦出发……。”反映了(  )

我国四大地理区域的划分依据主要是（    ）