学生最喜欢的活动项目的人数统计表

根据图表中提供的信息，解答下列问题：

带电小球以速度v₀沿竖直方向从A点垂直进入匀强电场E中，如图所示，经过一段时间后到达B点，其速度变为水平方向，大小仍为v₀，则在上述过程中一定有（   ）

（Ⅰ）求函数f（x）的解析式；

（Ⅱ）若函数F（x）=3f（x﹣ $\frac{\pi }{12}$ ）²+mf（x﹣ $\frac{\pi }{12}$ ）+2在区间0， $\frac{\pi }{2}$ 上有四个不同零点，求实数m的取值范围．

    Yesterday it was Sharon's birthday, but she had no special plans, so she decided to go home after work.She left the office arid while she was walking down the street，she was1her friends.They usually remembered her birthday but they had forgotten it for the first time this year.“I think that's2because all of them are busy at work.I guess they will call me tomorrow as it is Saturday, ”she said to herself.Then she3that she was hungry, so she bought some food in a supermarket.And when she came out of the supermarket，she saw an old woman selling4.She bought some roses(玫瑰)from her and left.

    After she got home，she took a shower.And then she had some food.“Now I feel much happier,”she said.“If5remembers my birthday, I will celebrate it by myself.”Suddenly the doorbell (门铃)rang.It was 11：00 p.m.She was surprised 6her husband was on a business trip.“7could it be?”She thought and went to open the door.

    “Happy birthday! ”A group of her friends and her husband were there! Also their hands were full of colorful packages(包裹).She couldn't8her eyes. She had everybody9her and many nice gifts.It was the most10moment (时刻)of her life.“I'm really happy to have such thoughtful friends like you.Thank you all!”Sharon said excitedly.