3.The idea of smart cards a.is new b.is put forward in the 1980s c.occurred in 1980 卷oecurred in the1980s
3. The idea of smart cards__________. a. is new b. is put forward in the 1980s c. occurred in 1980 d. occurred in the 1980s
4.It can be inferred that smart cards are already being used more widely in than in any other country. a.Manchester b.Britain American France 自iie
4. It can be inferred that smart cards are already being used more widely in _______than in any other country. a. Manchester b. Britain c. American d. France