某位同学想写一篇关于黄帝的文章，在他组织的以下材料中，不应该包括的内容是[ ]
A．发明舟车
B．教人挖井
C．建造宫殿
D．教人农耕
答案：D
The survey results concerning family and social environments were announced in November, 2010 and last month ______.
A．accidentally
B．unconsciously
C．cautiously
D．respectively
