It is a terrible illustration of man ' s weakness to nature .and the tsunami(^^) that struck the Japanese coast in March.2011 has illustrated the difficulty of fighting against natural disasters, even for a prosperous nation. 

Totally preventing tsunami-damage is impossible. But there is much that can be done to minimize damage and lossof life. Measures that can be taken include designing solid buildings, and developing early-warming systems,public education programs and evacuation( 拔散)strategics.Moreover, the approach of a tsunami is possiblypicked up by the sensors of complicated international warming systems. Countries can use radio and televisionbroadcasts as well as loudspeaker networks to warn the public. 

But an early warming system depends on how far the tsunami strikes, if it's close by, the warning system is notgoing to be very effective. When people are faced with an unstoppable force like a tsunami the massive wavescreated by events like underwater earthquakes, the best course of action for them is lo get inland and to the higherground as quickly as possible.66.The first paragraph tells us that _____ .