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题型:单选题 题类:常考题 难易度:普通
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#}
23÷{#blank#}1{#/blank#}23 1.5×{#blank#}2{#/blank#}1.5 ÷{#blank#}3{#/blank#}×
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