平凡的世界bt下载:why does it get colder as you clomb a mountain?

why does it get colder as you clomb a mountain? why does you get up? why does it always rain on me why does it always rain on me She does not get up until it is nine o’clock in the evening.（中翻英） Why does time fiy? why to say America is a "melting pot"? waht does it imply? It is cold.Put___your sweater. Where does it hurt? how does it feel?