Mr. and Mrs. Gordon were sitting on the sand, reading their magazines. Mr. Gordon was too stingy (吝啬) to rent (租) a chair. Their twelve-year-old daughter. Sandra, was playing at the water's edge. Suddenly a huge wave（波浪） lifted Sandra up and carried her out to sea. Luckily, a lifeguard(救生员) was on duty and he saw the wave carry Sandra away. He ran along the beach and dived into the sea. He swam quickly to where the girl, with her head only just above the water, was shouting for help. She was very frightened. When the lifeguard reached her, she struggled (斗争) wi