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2006年重庆高考理科数学真题及答案一、选择题:本大题共10小题,每小题5分。在每小题给出的四个备选项中,只有一项是符合题目要求的。(1)已知集合U1,2,3,4,5,6,7,A2,4,5,7,B3,4,5,则ðUA(ðUB)=()(B)4,5(C)2,3,4,5,7(D){1,2,3,6,7}(A)1,6(2)在等差数列an中,若a4a612,Sn是数列的an的前n项和,则S9的值为()(A)48(B)54(C)60(D)66(3)过坐标原点且与圆x2... 2024-01-29186389.67 KB11页35
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