问题
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:15,3,1,3/8,3/25,()。A.0 B.2 C.3/16 D.3/4
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15,3,1,3/8,3/25,()。A.0 B.2 C.3/16 D.3/4
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4,3,2,0,-3,-8,()A.-15 B.-16 C.-17 D.-18
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2,0,3,5,8,()。A. 13B. 15C. 16D. 20
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下面各题怎样简便就怎样算.(1)2.7×99+2.7 (2)34+16-38(3)3.93+1.64+6.07+8.36(4)(7.9-3.06÷0.51)×5(5)15
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牛乳中脂肪含量约为()A.2.8%~4.0%B.2.8%~3.8%C.1.8%~4.0%D.1.8%~3.5%