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2007年福建高考文科数学真题及答案第I卷(选择题共60分)一、选择题:本大题共12小题,每小题5分,共60分。在每小题给出的四个选项中,只有一项是符合题目要求的。(CUB)等于(1)已知全集U=1,2,3,4,5,且A={2,3,4},B={1,2},则A.{2}B.{5}C.{3,4}D.{2,3,4,5}(CUB)={3,4},选C解析:(CUB)={3,4,5},(2)等比数列{an}中,a4=4,则a2a6等于A.4B.8C.16D.32解析:a2a6=a42=16,选C(3)sin15°cos75°+cos15°sin105°等于A.0B.C.... 2024-01-24199374.37 KB9页54
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