____ the new law is used one day, I hope it will not punish people using 3D printers for personal purposes. 单选题 (10 分) 10分 A. when B. why C. If

____ the new law is used one day, I hope it will not punish people using 3D printers for personal purposes.
单选题 (10 分) 10分
A.
when

B.
why

C.
If

出自：国家开放大学理工英语4

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