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题型:单选题 题类:常考题 难易度:普通
分数和百分数及运算8346 10
×4{#blank#}1{#/blank#} 9× {#blank#}2{#/blank#} ×9 × {#blank#}3{#/blank#}
×0.5{#blank#}4{#/blank#} 0.9× {#blank#}5{#/blank#} ×9 0.8× {#blank#}6{#/blank#}0.5
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