14:28,May128.0SichuanguessWarming upUnit 4As we know, earthquake causes much damage. It is a disaster to everyone. Do you know the signs before an earthquake? Pre-readingIt is always calm before a storm.Discussion:What do you think will happen before an earthquake?Bright light _ in the sky.flashThe well has deep _in it.cracksChickens are flying and dogs are _, and pigs and cows are too _to eat.barkingnervousFish jump out of the_, and mice run out of the fields.pondLook at the pictures on Pre-rea
