______________Officials in the eastern Indian state of Assam say as many as 50 people may have drowned after an overcrowded riverboat hit a bridge and capsized. Survivors said more than 20 people were trapped below deck. _____________印度东部阿萨姆官员表示,一艘超载的轮船撞向大桥后倾覆,造成约50人溺亡.幸存者称,超过20人被困在甲板下.