开学以来，刘婷婷就跟换了一个人似的，爱说爱笑的她突然变得沉默寡言了；每天下午放学后，她总是以最快的速度匆匆离校，急急忙忙的也不知干啥。同学们都纳闷，15岁的刘婷婷什么时候学会玩深沉了。这天下午，刘婷婷照常骑着自行车飞快地奔出校门，穿过几条大街，来到一个报刊 Since the beginning of the school year, Liu Tingting has changed to a person. She suddenly became silent when she loved to laugh; after school every afternoon, she always hurriedly left school with the fastest speed. . The students were puzzled when Liu Tingting, aged 15, learned to play deep. In the afternoon of the same day, Liu Tingting quickly leaped out of the school on a bicycle and walked through several streets to a newspaper.