一队师生共328人，乘车外出旅行，已有校车可乘64人，如果租用客车，每辆可乘44人，那么还要租用多少辆客车？如果设还要租x辆客车，可列方程为（　　）

计算：（﹣x³）²•x²=____ 

（Ⅰ）求角A；

（Ⅱ）求函数y=2sin²B+cos $\frac{C-2B}{2}$ 的最大值．

    I'm Lucy. There are four people in my family. They are my grandfather, my parents and me. My grandfather likes to plant flowers. He works on his farm every morning. My father likes to watch TV. He likes to watch the news very much. My mother likes to go shopping. She often buys new clothes for us. I like to read books. I go to the library on Sundays.