广播电视馈送传输网主要由（）等多种方式组成。
A.微波中继传输
B.光缆和电缆传输
C.卫星传输
D.有线电视网
E.地面发射
参考答案：A, B, C
It was his studying in No.2 High School of Baoding for three years ____ laid the foundation of his
successful career.[ ]
A. that
B. when
C. since
D. until
严禁（）《中国建设银行个人资信证明书》，确保存款证明真实有效。
A.虚开
B.空开
C.超权限签发
D.开具多份
