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一,1,(九亿五千零九十九万四千六百五十),(95099),(10)2,(80500006),3,(黄球)4,(锐),(钝)5,(350+400)÷5=1506,钝105锐75平1807,(CE或C)8,(a×b)×c=a×(b×c)9,(1度),(1°)10,(3)?二,1,B2,C3,B4,C5,A?三,√×√√×?四,1,略2,10070034……152003,27009129300五,略?六,1,略2,313(棵)3,32(根)4,12(小时)5,22(岁)6,略一,1,4,亿;2,136000003,二十三亿零七百二十六万... |
