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题型:填空题 题类:常考题 难易度:普通
1,4,7,7{#blank#}1{#/blank#} =24 1,2,7,7{#blank#}2{#/blank#} =24.
还有{#blank#}1{#/blank#}只。
{#blank#}2{#/blank#} {#blank#}3{#/blank#} {#blank#}4{#/blank#} = {#blank#}5{#/blank#} (只)
{#blank#}1{#/blank#} {#blank#}2{#/blank#} {#blank#}3{#/blank#}= {#blank#}4{#/blank#}
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