年逾古稀的刘大爷,有个老习惯,就是吃过午饭后倒在床上便睡。今年夏季的一天,他听说孙子考上了名牌大学,心里高兴,中午饭量大增,饭后困乏,也就立即睡下。不料还不到半小时,他的喉咙里呼呼作响,接着 Old age more than Grandpa Liu, there is an old habit, that is, eaten lunch and fell asleep in bed. One day this summer, when he heard that his grandson was admitted to a prestigious university, he was very happy. His lunch capacity soared. After dinner, he was sleepy and he fell asleep immediately. Unexpectedly less than half an hour, his throat whirring, then