根据短文内容及首字母提示，填写所缺单词，使短文意思完整。每空一词。
     The environment is becoming worse and worse . There are many kinds of pollution that I worry a{#blank#}1{#/blank#} . The most serious two are n{#blank#}2{#/blank#} pollution and air pollution , because people can't live h{#blank#}3{#/blank#} with polluted air. Animals can't live in the world , e{#blank#}4{#/blank#} . More and more people are becoming i{#blank#}5{#/blank#} because of  polluted air .
     I think factories should not p{#blank#}6{#/blank#}  dirty water into rivers directly. We'd better go on foot or by bike i{#blank#}7{#/blank#} of by car . Finally , everyone must pay a{#blank#}8{#/blank#} to rubbish pollution . If everyone makes so much rubbish , one day we may live in a world f{#blank#}9{#/blank#}  of rubbish . How terrible it will be ! We should take a{#blank#}10{#/blank#} to make our world cleaner and more beautiful

根据短文内容及首字母提示，填写所缺单词，使短文意思完整。每空一词。
     The environment is becoming worse and worse . There are many kinds of pollution that I worry a{#blank#}1{#/blank#} . The most serious two are n{#blank#}2{#/blank#} pollution and air pollution , because people can't live h{#blank#}3{#/blank#} with polluted air. Animals can't live in the world , e{#blank#}4{#/blank#} . More and more people are becoming i{#blank#}5{#/blank#} because of  polluted air .
     I think factories should not p{#blank#}6{#/blank#}  dirty water into rivers directly. We'd better go on foot or by bike i{#blank#}7{#/blank#} of by car . Finally , everyone must pay a{#blank#}8{#/blank#} to rubbish pollution . If everyone makes so much rubbish , one day we may live in a world f{#blank#}9{#/blank#}  of rubbish . How terrible it will be ! We should take a{#blank#}10{#/blank#} to make our world cleaner and more beautiful

如图甲所示，一块质量为0.2kg的铁块被吸附在竖直放置且足够长的磁性平板上，在竖直方向上拉力F=3N的作用下向上运动，铁块运动速度v与时间t的关系图象如图乙所示。则铁块受到的摩擦力为{#blank#}1{#/blank#} N，0～6s内拉力F做的功是{#blank#}2{#/blank#} J（取g=10N/kg）。