An interesting new sport in the United States is sky diving(高空跳伞) . Some people like this very much. They often form(成立) a club. The members of the club get into airplanes and fly high above the . When it is time, each person jumps from the airplane and toward the earth at a very high speed. All of the members have parachutes(降落伞) but they do not open the parachutes a long time.

    From the ground they look like big birds. The sky divers(高空跳伞运动员) say that they also feel like(感到好似) birds. Some people like to swim in the ocean or to play in the snow, but the favorite place for sky divers is the sky.