题目

阅读理解 Stop making excuses for him. Mom, I said. But maybe he is feeling unwell... Mom said. Maybe nothing. I interrupted. I had been tending Mom since her health began to decline and this would be the first time in a year that my husband and I had a night out together. Jerry had promised to stay with Mom. But again he let us down. And more often than not, his drinking had a lot to do with it. His irresponsibility upset me. I remembered our happy growing-up years in a small town in West Virginia. With good family education. Jerry had been a kind kid. He was only 15 when Dad died. Unlike 如图，请在括号内填上正确的理由：因为∠DAC=∠C（已知），所以AD∥BC（    ）。