31.   The franc was also hurt by political uncertainty as the French presidential election neared.

32.   The patterns rise uniformly, and the principal tension is uncertainty as to when the ascent will stop.

33.   The populist Republican has forced fellow presidential candidates and the nation to confront increasing job uncertainties as big corporations shrink their work forces.

34.   The profession is marked with low pay, stressful working conditions and uncertainty as airline managers continue to find ways to cut costs and increase profit margins.

35.   There is some uncertainty as to whether palladium will remain a key ingredient in the catalytic converters that are used to control automotive emissions.

36.   There is still uncertainty as to whether continued use of estrogen causes an increased risk of breast cancer, the leading cause of cancer among women.

37.   There remains uncertainty as to whether White will need surgery.

38.   There is uncertainty as to what will happen to the defensive lineup if Glenn cannot play.

39.   There may be uncertainty as to guilt.

40.   There seems to be a genuine uncertainty as each school jockeys to assert itself prior to the game.