ground shaking - earthquake, too much water - flood, shortage of food - famine, a mass of earth and rock going down from a mountain - landslide, a long, high sea wave caused by an earthquake - tsunami, a widely spread infectious disease - epidemic, a period with no rain and a shortage of water - drought, a conflict between two countries - war, a sudden heavy fall of hail - hailstorm, a violent wind that has a circular movement - hurricane,

Ex.1a

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恢复自动保存：？