问题
单项选择题
Yon should provide us a set of origin in( ), that is, one original and two copies.
A．duplicate
B．quadruplicate
C．triplicate
D．double
答案
参考答案：C
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Yon should provide us a set of origin in( ), that is, one original and two copies.
A．duplicate
B．quadruplicate
C．triplicate
D．double
参考答案：C