用户加入虚拟网的途径（）
A.客户经理
B.基层团长
C.电子渠道
D.社会渠道
参考答案：A, B, C, D
—There is a girl in front of our classroom. Do you know ?
—She is an English teacher.
A．who is she
B．who she is
C．what is she
D．what she is
风险规避的方式主要有完全拒绝承担风险和（）。
A.承担部分风险
B.放弃原先承担的风险
C.风险预防
D.抑制损失
