商品条码一般印在（）上。
A.商品；
B.商品包装；
C.商品标签
参考答案：B, C
_______ surprised me most was that she had become a famous singer.
A．That
B．It
C．What
D．This
炉膛工业电视冷却风机电源有几路，取自哪里？
