I'm Alan. The weekend just ended. Yesterday I went to visit the museum. It is about 3 kilometers away from my home. So I decided to go there by bike, I set off at half past eight. At the museum I saw many photos and other things. I learned a lot. There were also a lot of children with their parents，students with their teachers and soldiers. At eleven o'clock, I left the museum for home. I had a wonderful time yesterday.

阅读短文，回答下列问题。

（Ⅰ）判断f（x）的奇偶性；

（Ⅱ）用函数单调性的定义证明：f（x）在（0，+∞）上是增函数．

请将相对应的选项填在括号里。

A甲骨文     B司母戊鼎

C四羊方尊    D青铜立人像

____ 是商代重要的青铜器之一。

____ 与今天的汉字有着渊源关系。

____ 是商代蜀文化的杰出作品。

____ 是目前已发现的最大的青铜器。

—For ten minutes.