题目

根据短文内容，从下框A-F选项中选出能概括每一段主题的最佳选项，选项中有一项为多余项。 A. Look up things in the dictionary. B. Figure out things on your own. C. Exercise your mind in different ways. D. Study more effectively. E. Be more curious. F. Do some research. How to become more intelligent Are you embarrassed when you don’t know the answer to a teacher’s question? Everybody has those times when they just feel like they don’t know anything. Of course, you can’t know everything, but no matter how smart you are, you can start becoming mo计算：（x2y-12xy2-2xy）÷12．