One day Eddie and Hobo looked at the ____. Eddie thought he saw a____but Hobo thought it was a ____. Because Hobo saw one ____. Eddie thought there were many bright ____and it was too____, so it couldn't be a plane.
若3amb2与-a4bn-1是同类项,求(n-m)2010的值
在人类历史上,尤其是正在到来的知识经济时代,财富有多种形态,创造财富的要素、条件也有多种形态,有的是有形的,有的是无形的,有的容易被认知、运用,有的不容易被认知、运用。在我国现阶段,创造社会财富的重要源泉有( )①劳动 ②智慧与开拓精神 ③科学技术 ④资本和管理