[音频]Passage Two29.A. A home fire.B. An explosion.C. A murder.D. A car accident.30.A. He broke the lock to free the baby.B. He pulled the baby out of the window.C. He crawled close to the baby on the ground.D. He jumped onto the car to take the baby out.31.A. Giving necessity to the homeless with friends.B. Helping delivering packages in the post office.C. Taking goods to the local needy people.D. Sending gifts to the poor in his name.