51.   But foreign-born parents pose a tougher challenge because they can plead ignorance or cultural differences, a highly charged term in these politically correct times.

52.   But he has had to endure the cultural differences that make ordering a keg of Guinness maddening.

53.   But he will have to press further to reduce operating costs, analysts say, and tackle the cultural differences that trouble Americans.

54.   But her performance this week is an indication that she is becoming more comfortable with the competition and cultural differences.

55.   But in other areas, cultural differences played a clear role in student achievement.

56.   But it also reflects a cultural difference.

57.   But John Pembroke, brand manager for Blackfamilies.com, says there are significant cultural differences that will make sites like his or BET.com attractive to its target audience.

58.   But more important, they must focus on cultural differences.

59.   But other presumed cultural differences are more subtle.

60.   But the authorities in New York were not convinced by the argument of cultural differences.