读东、西半球图，回答下列问题：
“上问魏征曰：‘人主何为而明，何为而暗？’对曰：‘谦听则明，偏信则暗。’上曰：‘善！’”材料中“上”指的是（ ）
—Would you like to go fishing with me?
—I don't feel like it. I would rather _______ at home and have a sleep.
质点做匀加速直线运动，初速度v0=5m/s，加速度a=2m/s2，求
