A:130°
B:120°
C:150°
D:50°
函数fx=x+2x-1的值域为____
①己所不欲,勿施于人
②少壮不努力,老大徒伤悲
③勿以恶小而为之,勿以善小而不为
④天生我才必有用
We ____ ( go ) home by bus yesterday.