NOTTINGHAM, England (Reuters) -Joe Root scored his fastest test century while Ollie Pope struck a superb 145, as England launched a stirring fightback to reach 473-5 at the close of play on the third day of the second test against New Zealand on Sunday. Resuming on 90-1 in the morning after the touring side had posted a massive first-innings total of 553, England excelled on a good batting wicket at a sunny Trent Bridge to trail by 80 when stumps were drawn. Root was unbeaten on 163 with Ben Foakes not out on 24 after being handed a lifeline. Pope, dropped early in his innings on Saturday, loo…