51.   Bradley seems to have the upper hand when the exchanges are thematic, Gore when they are about the history and funding of specific programs.

52.   A lively exchange of views was the result.

53.   A nuclear exchange would be far less personal, far more deadly.

54.   A single exchange is just the next step, some would argue.

55.   Academic exchanges are not free and open, she maintains, when Castro prevents dissenters from participating.

56.   According to her account, which was confirmed by the Israeli army, there were no exchanges of gunfire at the time.

57.   Adams said the exchange will be in operation in the second quarter this year.

58.   Again, the exchanges were matter-of-fact and pleasant.

59.   Along the way there are smoggy exchanges about global warming, developing countries, cost-benefit analysis and political pressures.

60.   All the national exchanges are moving toward increments of sixteenths.