试题 试卷
题型:单选题 题类:常考题 难易度:容易
19+23= 3.5+4.7= 1.5×3= 3.6÷12=
18× = + = 1- = × = ÷ =
6- = 3÷ = × = × =
×28= ÷ = + = ÷ =
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