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题型:单选题 题类:常考题 难易度:普通
一年级 比一比118
数一数,填一填.
{#blank#}1{#/blank#}.
{#blank#}2{#/blank#}.
{#blank#}3{#/blank#}.
{#blank#}4{#/blank#}.
5-2{#blank#}1{#/blank#}1+2 4-2{#blank#}2{#/blank#}1+4 3-2{#blank#}3{#/blank#}2+3
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