下列函数为奇函数的是( )
A:y=x3+3x2
B:y=ex+e-x2
C:y=xsinx
D:y=log23-x3+x
某同学为了进校篮球队,除了必要的训练外,在饮食上也注意补钙,营养师建议还要服用少量鱼肝油,这是因为鱼肝油中含有丰富的( )
The idea of “sunshine sports”makes it possible for kids to choose and do _______ about sports as long as one hour every day.