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信息发布者:
So far, millions of books have been damaged in the flood.
People were running away from the beach because of the coming wave.
I wonder if you can see anything at all in the smoke.
spread
impossible
lead
easily
conditions
height
dangerous
leave
increasing
warn
So it's of great importance for us to know what to do 
when they happen. Here are some tips. 
       When a flood happens, we'd better get to a higher
place. We shouldn't walk or swim through the flood 
water. If an earthquake happens, we should hide under
a strong desk or table and run out of the building when the ground stops shaking. We shouldn't stand near a tall building. If we are outside when a thunderstorm begins, we should look for cover in a large building or lie down in a hole. We shouldn't stand under a tree, or we will be easily hit by lightning. Last but not least, we should be brave and stay calm.