听力原文：Consider three major recent California earthquakes: Loma Prieta in 1989, with a 6.9 magnitude, Northridge in 1994, with a 6.7 magnitude, and San Simeon/Paso Robles on December 22, 2003, with a 6.5 magnitude. These relatively strong earthquakes in California resulted in a total of 125 deaths, while this week's Iranian quake, with a somewhat lesser magnitude, claimed 40,000 lives. Such awful losses of human life in the Iranian quake should not have occurred.