志愿服务四大特征：有志愿性、无偿性、公益性、（）。
A.公平性
B.团结性
C.组织性
D.随意性
参考答案：C
If I knew his telephone number,I _____him.[ ]
A. has telephoned
B.was telephoning
C. would telephone
D.telephone
数据3G技能专席为客户补发手机报是否有条数限制？
