With the development of science, more new technology to the field of IT. 　　 A: has introduced B: is being introduced C: is introduced D: was introduced E: is introduced F: was being introduced

With the development of science, more new technology ______ to the fields of IT. A: has introduced B: is being introduced C: is introduced D: was introduced

Do you remember _____ to Professor Smith during your last visit to the university? A: to be introduced B: having introduced C: being introduced D: to have introduced

Do you remember _______ Professor Fan during your last visit? A: having been introduced B: being introduced to C: to have Introduced D: to be introduced

I know Mr. Brown; we ______ to each other at an international<br/>conference. A: are introduced B: are been introduced C: were introduced D: had been introduced

Do you still remember ______ to Professor Lee during last visit A: to have introduced B: having introduced C: to introduce D: being introduced

When first _____ to the market, these products enjoyed great success. A: introducing B: Introduced C: introduce D: eing introduced

The writer concludes that school rules to forbid smoking ______. A: should be introduced, for it really works at the school where he once studied B: should not be introduced, for it may cause disturbance C: should be introduced though it may not work effectively D: needn't be introduced as long as teachers don't smoke in front of children

Who introduced Christianity into Britain?

A bill dealing with finance is introduced _.