开发者社区能满足开发者哪些需求？（）
A.创业致富
B.获取信息
C.学习交流
参考答案：A, B, C
Mr. Smith doesn’t believe that his daughter can work out the problem that easily,_____?
A．does he
B．can she
C．doesn’t he
D．can’t she
防守队员可以坐在地上阻挡对方射门。
