21.   As a backdrop, one federal official said that NTSB and FBI investigators were clashing, in marked contrast to their public posture of full cooperation.

22.   B The instant case stands in marked contrast.

23.   But in another marked contrast to the Republican program, congressional Democrats will have prominent roles in their convention.

24.   But Merrill said its fixed-income trading results were virtually unchanged from a year ago, a marked contrast with other Wall Street firms.

25.   Hayes, a war veteran whose rectitude stood in marked contrast to the moral squalor of the Grant administration, was not exactly Mr. Excitement on the campaign stump.

26.   His nonchalance is in marked contrast to the reaction of nonscientists who panic at the thought of anything nuclear.

27.   His outgoing way was in marked contrast to that of his predecessor, the quiet and circumspect Lawrence Rhodes.

28.   In a marked contrast to previous elections, television cameras from New York and beyond trailed the candidates.

29.   In marked contrast to their previous appearance here, the Hawks dug in.

30.   In marked contrast to us, however, citizens of the land of Marie Curie, who isolated the first radioactive element, have embraced the atom.