A. Where is it displayed?
B. It really matters.
C. That’s fine.
2. —?Do you?like that technology exhibition? — Yes, I?like it very much. _________?????????????????????.?
A. It finally comes true.
B. It shows me the impressive magic power of 3D printing.
C. It is a good chance.
3. — 3D printing?is one of the latest technological?innovations. —?____?Maybe its functions are questionable.
A. Really?
B. Exactly.
C. I think so.
4. 3D printing is just at the beginning stage. It is not ____.
A. mature
B. ripe
C. grown
5. ____?the new law is used one day, I hope it will not punish people using 3D printers for?personal purposes.?
A. when
B. why
C. If
