课时跟踪检测(三十三) 数 列 求 和1.已知{an}是首项为1的等比数列Sn是{an}的前n项和且9S3S6则数列eq blc{rc}(avs4alco1(f(1an)))的前5项和为( )A.eq f(158)或5 B.eq f(3116)或5C.eq f(3116) D.eq f(158)2.已知数列{an}的前n项和Snan2bn(ab∈R)且S2510
课时跟踪检测(三十二) 数 列 求 和1.已知Sn是等差数列{an}的前n项和若S77S1575则数列{eq f(Snn)}的前20项和为________.2.数列{an}满足anan1eq f(12)(n∈N)a1-eq f(12)Sn是{an}的前n项和则S2 014________.3.已知函数f(n)n2cos nπ且anf(n)f(n1)则a1a2a3…a100_______
课时跟踪检测(十三) EuropeⅠ.单项填空1.Tianjin ________120km southeast of Beijing is the largest coastal city in Northern .laid B.layingC.situated D.locating2.Most museums are just for today some of them
课时跟踪检测(三十五) Travelling abroadⅠ.多项选择1.In that school English ispulsory for all students but French and Russian are ________.A.special B.regionalC.optional D.original2.The report says t
课时跟踪检测(三十) 等差数列及其前n项和1.(2014·泰州模拟)在等差数列{an}中若a3a9a2712则a13________.2.已知等差数列{an}满足a23Sn-Sn-351(n>3)Sn100则n的值为________.3.(2014·镇江月考)已知等差数列{an}中a4a610前5项和S55则其公差为________.4.已知Sn是等差数列{an}的前n项和S10>0并且S110若
课时跟踪检测(三十二) Fantasy LiteratureⅠ.单项填空1.(2014·吉林高三质监)—Did you forget that our foreign teacher will return this weekend—________ Weve prepared a surprise party for .No doubt. B.How could IC.Im afr
课时跟踪检测(四十三) Deep SouthⅠ.单项填空 1.(2014·黑龙江省四校联考)—Shall we ask Diana if shed like to join in the party tonight—________. Id like her to join us. A.As you wish B.Youre wee C.Hurry up D.Not like
课时跟踪检测(三十一) Small TalkⅠ.单项填空1.(2014·江苏四市质检)—Jane got the first prize in the nationalpetition.—________ Ive never seen her writing .I hope not. B.It all .You cant be serious. D.No doubt2.Th
课时跟踪检测(四十三) Deep SouthⅠ.单项填空 1.(2014·黑龙江省四校联考)—Shall we ask Diana if shed like to join in the party tonight—________. Id like her to join us. A.As you wish B.Youre wee C.Hurry up D.Not like
课时跟踪检测(三十一) 等比数列及其前n项和1.(2013·镇江期末)在等比数列{an}中Sn为其前n项和已知a52S43a62S53则此数列的公比q为________.2.已知等比数列{an}的各项均为正数若a13前三项的和为21则a4a5a6________.3.在数列{an}中an1can(c为非零常数)前n项和为Sn3nk则实数k的值为________.4.设各项都是正数的等比数列{an}
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