已知A（﹣1，y₁）、B（3，y₂）为一次函数y=﹣2x+3图象上的两点，则y₁与y₂的大小关系是____．

（Ⅰ）求数列{a_n}的通项公式；

（Ⅱ）设数列b_n= $\frac{1}{{\left(2{\log }_2{a}_{n+1}+3\right)}^2-1}$ ，且数列b_n的前n项的和T_n，试比较T_n与 $\frac{1}{4}$ 的大小．

    My class is like (像) a big1. I like all my2. I have3friends in my class. One of them is Suzy, a girl from Nanjing. But now she lives4Yangzhou.

    Suzy is a good student. She learns (学) all her5well. Her favourite thing is6. She thinks books are like food and help her7lot.

    8Wednesday afternoons, she always9to a nursing house (敬老院). Sometimes she10with the old people there. Sometimes she plays some music for them. They enjoy11o Beijing Opera (京剧) very much.

    Suzy is also a good12. She thinks Yang Liping is one of the best dancers in the world. So she often13Yang's shows on TV. Her great dream14 to see Yang Liping, though（尽管）she knows it is15 .