申请绿卡时，护照页可以double-sided print 吗？

来源: 于 2011-01-14 12:59:27 [旧帖] [给我悄悄话] 本文已被阅读：次

申请绿卡时，护照页可以double-sided print 吗？It can save some paper because I have two expired and one unexpired passport need photocopy.
Thanks.