61.   Today policymakers have a better understanding of how economies work and how monetary and fiscal policy can be used to prevent depression.

62.   What is at issue is the standards to be used to prevent violation of church-state boundaries.

63.   When drugs are used to prevent other infections like influenza after exposure, the more promptly treatment is started, the more effective it is likely to be.

64.   When Gates used that veto to prevent Maffei from leaving, analysts say, it was probably only a matter of time before his top financial strategist left.

65.   When blood is drawn up into a test tube, a substance called EDTA is often used to prevent the blood from clotting.

66.   Wyld said the studies purposely ignore the times a gun may be used to prevent violence.

67.   A congressional committee has ordered SmithKline Beecham to turn over documents detailing how it determines the prices of Kytril, a drug used to prevent nausea in cancer patients.

68.   A spokesman for Powys County Council confirmed that all the fences and pens that were used to prevent sheep roaming the Beacons had been removed.

69.   Among others are digoxin and beta blockers used for heart disease, seizure medicines and drugs used to prevent organ rejection after transplants.

70.   At a polling place in Villahermosa, the capital, reporters saw a man lick away the supposedly indelible ink used to prevent people from voting more than once.