THE ADVENT OF COMPUTERS WAS ONE OF THE _________ MILESTONES IN THE...

15. - 170 CAU BAI TAP DIEN TU TRONG TIENG ANH CO DAP AN
170 CAU BAI TAP DIEN TU TRONG TIENG ANH CO DAP AN

15. The advent of computers was one of the _________ milestones in the mankind's

history. (NOTE)