阅读理解There was a photo touching the hearts of thousands of people online. In the photo a baby is staying with David, also known as "ICU(重症监护室) Grandpa".
Logan, the baby, had to stay in an ICU. His father was too busy with work. And Mary, Logan's mother, had an 8-year-old daughter to look after too. So Logan had to stay alone in hospital for some time every day.
One day, when Mary got to the hospital, she found an old man was looking after her son. " He said he heard Logan crying and asked the nurse if he could sing him to sleep. Oh, this man is like an angel(天使)!" said Mary.
David volunteered at the ICUs for years. On Tuesdays, he always spent time with older children. And on Thursdays, he stayed with little babies.
But why ICUs?"In ICUs, there are always some serious things going on. I'm happy to have a chance to help those kids, " said David. "When I stay with them, I feel warm. It's so great. I really enjoy it. " What David did really meant a lot to parents like Mary.
Sadly, David died at the age of 86. Slade, a nurse at Children's Healthcare of Atlanta, said she hoped that David's spirit would continue to provide some comfort for families in the future.