题目内容
（请给出正确答案）
[单选题]
下面哪几个词组表示的意思是“寄回一份供我方存档”？
A.post one copy to us for file
B.send one copy back to us for file
C.return one copy back to us for file
D.countersign one copy back to us for records
答案
send one copy back to us for file;return one copy back to us for file
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