31.   Her heart was beating very, very hard.

32.   Reluctantly she assented, but her heart was beating fast as he put his arm round her.

33.   Check to see if the heart is beating.

34.   Although one can tell how fast a heart is beating after the exercise, the reading is not a reliable indicator of overall heart rate.

35.   And does it really make our hearts beat faster and our pulses pound the way some people say, or is it just our imagination working overtime?

36.   And yet the heart of Jim Crow beats on.

37.   As the rider is whisked to the top of the Millennium Force, for instance, his heart beats noticeably faster and his system is flooded with adrenaline.

38.   Beneath it all are some hearts beating with a real passion for the lost.

39.   Beneath his tailored suit, he insists, there beats the heart of cybernaut.

40.   Beneath the revised sheet metal beat the heart of a truck, as the shortest drive made evident.