An interesting new sport in the United States is sky diving(高空跳伞) . Some people like this {#blank#}1{#/blank#} very much. They often form(成立) a club. The members of the club get into airplanes and fly high above the {#blank#}2{#/blank#}. When it is time, each person jumps from the airplane and {#blank#}3{#/blank#} toward the earth at a very high speed. All of the members have parachutes(降落伞) but they do not open the parachutes {#blank#}4{#/blank#} a long time.

    From the ground they look like big birds. The sky divers(高空跳伞运动员) say that they {#blank#}5{#/blank#} 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.