阅读短文，判断正误。正确的写“正确”，错误的写“错误”。

B

     It is Sunday morning.Mr. Brown and his son, Bill, are in a big shopping mall. Mr. Brown wants to buy a new dress for Mrs. Brown. Bill likes oranges. So his father buys two kilos of oranges for him, too. There are many things and many people in the mall. There are men and women, old and young. They all want to buy something there. The people in the mall are friendly. They are glad to help you find what you are looking for.

能源、信息和材料是现代社会发展的三大支柱，下列说法中正确的是（   ）

阅读下列材料，回答问题。

材料一：华夏民族，非一族所成。大古以来，诸侯（指远古时期的部落）错居，接触交通，各去小异而大同，渐化合以成一族之形，后世所谓诸夏是也。——梁启超《饮冰室合集》

材料二：中华开国五千年，神州轩辕自古传。创造指南针，平定蚩尤乱。世界文明，唯有我先。                           ——孙中山

材料三：如图（他）因抱改革天下之宏愿，故政治活动之外更注意于教育，开中国史上民间自由讲学之第一声。   ——钱穆《国史大纲》