41.   Those shadowy marks on the ceilings are mildew or dirt, and they are appearing where the beams actually are, or where the strapping is.

42.   Most of the houses made of mud and wooden beams were in ruins.

43.   So what if a beam of light is just sunlight gleaming off discarded aluminum foil, or the loud noises are only sonic booms from nearby military exercises.

44.   Steel beams are cheaper than those made of wood, he said.

45.   The beam was the only apparatus final all-around champion Khorkina did not qualify for.

46.   The beam was the only apparatus final all-around champion Svetlana Khorkina did not qualify for.

47.   The beams are to shoot energy onto a single target, recreating in a laboratory the thermonuclear conditions caused by a nuclear detonation.

48.   The beam once was just a bar of wood that had to be checked for splinters before competition.

49.   The beams are meant to evoke the destroyed towers.

50.   The downside was that the light beams were not too powerful and were difficult to control.