The skin is {#blank#}1{#/blank#} essential part of your body and its {#blank#}2{#/blank#} organ. You have three {#blank#}3{#/blank#} of skin which act as a barrier {#blank#}4{#/blank#} disease, poisons and the sun's harmful rays. The {#blank#}5{#/blank#} of your skin are also very {#blank#}6{#/blank#}: it keeps you warm or cool; it prevents your body from {#blank#}7{#/blank#} too much water; it is where you feel cold, heat or pain it gives you your sense of {#blank#}8{#/blank#}. So you can imagine, if your skin gets {#blank#}9{#/blank#} it can be very serious. First aid is a very important first step in the {#blank#}10{#/blank#} of burns.

    Virginia Key is a barrier island {#blank#}1{#/blank#}(contain) a variety of upland and wetland plant communities. It {#blank#}2{#/blank#}(locate) in Biscayne Bay, south of Fisher Island and bordering {#blank#}3{#/blank#} Atlantic Ocean. The city of Miami is the present landowner of the north point of Virginia Key.

    Since the 1970s, the island {#blank#}4{#/blank#}(be) the site of the deposition(淤积) of sand from the Port of Miami, which destroyed its beaches as a turtle habitat. Due to historical clearing of native vegetation(植被) followed by carelessness, non-native plants {#blank#}5{#/blank#} threatened the ecology of Virginia Key grew rapidly.

    {#blank#}6{#/blank#}(fortunate), 11,000 young mangrove(红树) representing over eight acres of habitat have been replanted in Virginia Key {#blank#}7{#/blank#} volunteers over the past five years. Volunteers are now working hard {#blank#}8{#/blank#} (monitor) the habitat. Each month, they survey birds, check the {#blank#}9{#/blank#} (grow) of new vegetation, collect water quality data, and observe changes in the landscape. Please sign up {#blank#}10{#/blank#} you'd also like to participate.

    Every individual is a member of a group called the community, and it is the duty of every citizen {#blank#}1{#/blank#} ask what he can do for his community. A good citizen {#blank#}2{#/blank#}(相信) that he should serve the community and not the community serve h{#blank#}3{#/blank#}. As students, there are many ways in {#blank#}4{#/blank#} you can serve the community. Above all, however, you have to acquire a certain amount of skill and experience b{#blank#}5{#/blank#} you can be of service to others. Your school has lots of{#blank#}6{#/blank#}(活动) which prepare you {#blank#}7{#/blank#} good citizenship. Many school societies train students to become good citizens who later p{#blank#}8{#/blank#} in volunteer work and serve the public in t{#blank#}9{#/blank#} of need. If you serve your community, you will grow {#blank#}10{#/blank#} to be a good citizen with a strong sense of responsibility.