A:3.081
B:3.04
C:2.896
D:2.905
在新学校,有那么多新面孔,可慢慢地就成了朋友,每个人都需要朋友,这是因为( )
Channel(频道)
Time
Name show
Kind of show
ATV
7:00
News
8:30
Good Friend Contest
Game Show
9:20
Chinese Mother
Documentary Special
12:00
Man From the Star
Soap Opera
BTV
7:40
China Sports
Sports Show
Happy Family
Sitcom
10:40
Face To Face
Talk Show
CTV
9:30
China Music
Music
13:40
Romantic Dream
Fashion Show
22:40
Football Magazine
函数f(x)=x|arcsinx+a|+barccosx是奇函数的充要条件是 ( )