题目

Last night, when I went to see my grandmother, she was sitting alone at the nurse station with her word search book. My grandmother was sitting at the desk with her book but no pencil just staring at the letters as if she was trying to find the word. I came to her and said hello.Usually, she at least knows I am connected to her somehow but this time, she looked at me with doubt. I introduced myself and told her that I was her granddaughter. “I don’t know who you are,” she said.” Do you want to go outside?” I asked. “okay,” she said.We got her things and I wrapped it all in a blan如图，AC平分∠BAD，AB∥CD，能推出∠CAD=∠DCA吗？试说明理由．