题目

We’ve got two dogs, Roxie and Cosita. My childhood memories are full of the cats we’ve loved, from my dad’s cat, Bandit, to our beloved white cat Cecelia, whose gray fur formed a perfect heart shape across her stomach. But since our last cat friend, Sunny the orange cat, died too young, we’ve been cat-less. The sudden loss of Sunny was hard to move on from, especially for my mom.This year, Mom finally thought she was ready for a new kitten. It was all she wanted for her birthday on June 16. “Roxie and Cosita need a new friend!” she said. In the week leading up to her birthday, some正比例函数y=x与反比例函数y=kx（k≠0）的图象在第一象限交于点A，且AO=2，则k的值为（　　）A．22B．1C．2D．2