试题 试卷
题型:单选题 题类:常考题 难易度:普通
1 × = 52
6×7=42
6.6×6.7=44.22
6.66×66.7={#blank#}1{#/blank#}
6.666×666.7={#blank#}2{#/blank#}
{#blank#}1{#/blank#}2{#blank#}2{#/blank#}0.2{#blank#}3{#/blank#}
1=12
1+3=22
1+3+5=32
1+3+5+7=42
21+23+25+…+45+47+49={#blank#}1{#/blank#}2﹣{#blank#}2{#/blank#}2={#blank#}3{#/blank#}.
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