51.   At any given time, Hornstein said, about one in five Americans have such a boss.

52.   At any given time, some part of the nation may be in a drought.

53.   At any given time, there is a wide disparity of views among economic analysts and forecasters.

54.   At any given time, two or three babies are awake and sucking on bottles, being bathed or cuddled, or getting a diaper changed.

55.   A unique visit represents one individual who visits a site in a given time period.

56.   A. While ice skating and the Netherlands seem synonymous, there is no guarantee that the canals of Holland will freeze at any given time in winter.

57.   According to studies conducted by Atchley, the average person is only capable of dividing his attention among four objects at any given time.

58.   But consider the role of the routers, which decide which network to forward your request to at any given time.

59.   But he said he assumed that topical estrogen would increase the thickness of vaginal cells at any given time in the menstrual cycle.

60.   But only a few hundred to a few thousand genes are active in any given cell at any given time.