题目

RESOURCES BELONG TO THE SOCIETY When I arrived in Hamburg Germany, my colleague who worked there arranged a welcome party for me in a    21   . We noticed a few customers including several old ladies, were having their meal. When a dish is    22   , the waiter would distribute the food for them, and they would   23  every bit of the food on their plates.     As I was hungry, my local colleague   24   much food for me. Since there were other things to do, we did not   25    much time dining. When we planned to leave, there was still about one third of    26� (1＋x＋x2)(x－)6的展开式中的常数项为________．