People who are hit by lightning and survive often have long-term effects. These may include memory loss, sleep disorders, muscle pain and depression. Experts tell people to【C1】______the safety of a building or a hard-top vehicle【C2】______they hear thunder,【C3】______it is not【C4】______. They say lightning can【C5】______as far as sixteen kilometers from any rainfall. Lightning can【C6】______sideways. And at least ten percent of lightning happens【C7】______any clouds overhead that you can see. People who are【C8】______should【C9】______there are not the【C10】______thing around. Bend【C11】______to the ground, but do not【C12】______. And do not stand【C13】______a tree or any tall object.【C14】______water and anything【C15】______metal. A car is safe, but do not touch any metal inside. Safety experts say people in buildings should stay away from【C16】______with wires or pipes that【C17】______the outside. The National Weather Service says if you plan to【C18】______any electronic equipment, do so before the storm arrives. Do not use a wired telephone. Do not use water. All these can【C19】______electricity. Some people think a person struck by lighting carries an electrical charge afterward. Experts say this is【C20】______. It is safe to begin emergency treatment. 【C1】