A MELEE that broke out after a movie theater sold too many tickets has left 18 people trampled to death and 34 injured in a southern Chinese village, a local newspaper reported in an edition that arrived in Beijing on Wednesday . . . AN ILLEGAL CACHE of fireworks and gunpowder exploded in a Plymouth, Mass., trailer and a shed New Year's Day, critically injuring a man believed to own the collection and knocking neighbors off their feet . . . A BLAZE that began in a motorcycle in a Queens, N.Y., living room spread throughout the apartment, injuring six people, four of them teenagers, who were rescued by firefighters.