随行电缆一般用20号铅丝绑扎，绑扎要均匀、牢固、可靠，使用电缆与套筒无移动，其绑扎长度为（）mm。

A、5～30

B、30～70

C、70～90

D、90～120

_____ a US visitor visa twice, the young man finally gave up his hope of going to America. [ ]

A. Having been refused

B. Being refused

C. Having refused

D. To be refused