本網站為【成考幫】旗下網站,主要為廣大考生提供報考指導服務,網站信息僅供學習交流使用,非政府官方網站,官方信息以福建教育考試院www.eeafj.cn為準。

            全國|北京|上海|天津|重慶|河北|河南|山西|山東|江蘇|浙江|湖北|湖南|陜西|安徽|福建|江西|廣東|廣西|四川|云南|海南|遼寧|吉林|黑龍江|貴州|甘肅|青海|內蒙古|寧夏|新疆|西藏

            【福建成人高考】高起點數學文科難點三

            福建成人高考信息網www.laiwobuy.com 發布時間: 2018年11月10日

            難點3運用向量法解題


            平面向量是新教材改革增加的內容之一,近幾年的全國使用新教材的高考試題逐漸加大了對這部分內容的考查力度,本節內容主要是幫助考生運用向量法來分析,解決一些相關問題.


            ●難點磁場


            (★★★★★)三角形ABC中,A(5,-1)、B(-1,7)、C(1,2),求:(1)BC邊上的中線


            AM的長;(2)∠CAB的平分線AD的長;(3)cosABC的值.


            ●案例探究


            [例1]如圖,已知平行六面體ABCD—A1B1C1D1的底面ABCD是菱形,且∠C1CB=∠C1CD=∠BCD.


            2017年成人高考高起點文數考試章節難點解析(3)chengkao1.png


            (1)求證:C1C⊥BD.


            (2)當的值為多少時,能使A1C⊥平面C1BD?請給出證明.


            命題意圖:本題主要考查考生應用向量法解決向量垂直,夾角等問題以及對立體幾何圖形的解讀能力.


            知識依托:解答本題的閃光點是以向量來論證立體幾何中的垂直問題,這就使幾何問題代數化,使繁瑣的論證變得簡單.


            錯解分析:本題難點是考生理不清題目中的線面位置關系和數量關系的相互轉化,再就是要清楚已知條件中提供的角與向量夾角的區別與聯系.


            技巧與方法:利用a⊥ba·b=0來證明兩直線垂直,只要證明兩直線對應的向量的數量積為零即可.


            (1)證明:設=a,=b,=c,依題意,|a|=|b|,、、中兩兩所成夾角為θ,于是=a-b,=c(a-b)=c·a-c·b=|c|·|a|cosθ-|c|·|b|cosθ=0,∴C1C⊥BD.


            (2)解:若使A1C⊥平面C1BD,只須證A1C⊥BD,A1C⊥DC1,


            由=(a+b+c)·(a-c)=|a|2+a·b-b·c-|c|2=|a|2-|c|2+|b|·|a|cosθ-|b|·|c|·cosθ=0,得


            當|a|=|c|時,A1C⊥DC1,同理可證當|a|=|c|時,A1C⊥BD,


            ∴=1時,A1C⊥平面C1BD.


            [例2]如圖,直三棱柱ABC—A1B1C1,底面△ABC中,CA=CB=1,∠BCA=90°,AA1=2,M、N分別是A1B1、A1A的中點.


            (1)求的長;


            (2)求cos<>的值;


            (3)求證:A1B⊥C1M.


            2017年成人高考高起點文數考試章節難點解析(3)chengkao2.png


            命題意圖:本題主要考查考生運用向量法中的坐標運算的方法來解決立體幾何問題.屬


            ★★★★級題目.


            知識依托:解答本題的閃光點是建立恰當的空間直角坐標系O-xyz,進而找到點的坐標和求出向量的坐標.


            錯解分析:本題的難點是建系后,考生不能正確找到點的坐標.


            技巧與方法:可以先找到底面坐標面xOy內的A、B、C點坐標,然后利用向量的模及方向來找出其他的點的坐標.


            (1)解:如圖,以C為原點建立空間直角坐標系O-xyz.


            依題意得:B(0,1,0),N(1,0,1)


            ∴||=.


            (2)解:依題意得:A1(1,0,2),C(0,0,0),B1(0,1,2).


            ∴==(0,1,2)


            =1×0+(-1)×1+2×2=3


            ||=(3)證明:依題意得:C1(0,0,2),M()


            ∴∴A1B⊥C1M.


            ●錦囊妙計


            1.解決關于向量問題時,一要善于運用向量的平移、伸縮、合成、分解等變換,正確地進行向量的各種運算,加深對向量的本質的認識.二是向量的坐標運算體現了數與形互相轉化和密切結合的思想.


            2.向量的數量積常用于有關向量相等,兩向量垂直、射影、夾角等問題中.常用向量的直角坐標運算來證明向量的垂直和平行問題;利用向量的夾角公式和距離公式求解空間兩條直線的夾角和兩點間距離的問題.


            3.用空間向量解決立體幾何問題一般可按以下過程進行思考:


            (1)要解決的問題可用什么向量知識來解決?需要用到哪些向量?


            (2)所需要的向量是否已知?若未知,是否可用已知條件轉化成的向量直接表示?


            (3)所需要的向量若不能直接用已知條件轉化成的向量表示,則它們分別最易用哪個未知向量表示?這些未知向量與由已知條件轉化的向量有何關系?


            (4)怎樣對已經表示出來的所需向量進行運算,才能得到需要的結論?


            彩票33彩票33官网彩票33平台彩票33app彩票33邀请码彩票33娱乐彩票33快3彩票33时时彩彩票33走势图彩票33ios www.76543u.com | www.s30226.com | 98955c.com | www.cs.bet | 7134455.com | www.ya2019k.com | zhcp57.com | www.0586777.com | www.382888.com | hjj11.com | www.pj9050.com | 2805o.com | www.584911.com | www.078999.com | 9068e.com | www.41518n.com | www.4938f.com | 6220uu.com | www.869934.com | 334611.com | www.178937.com | www.1168y.com | mg887788.com | www.550346.com | www.35252w.com | yun888.com | www.369888aa.com | www.7415h.com | p8381.com | www.811203.com | www.tw8888.net | 99662007.com | www.c144.vip | www.518737.com | hwcp4444.com | www.286967.com | www.0057a.com | xxx01234.com | www.582914.com | www.50999.com | 131eee.net | www.177109.com | www.9170187.com | feicai0534.com | bwinooo.com | www.9895l.com | 4466.so | 76543k.com | www.4625.com | www.88837f.com | 7240w.com | www.00840w.com | www.kk8996.com | 729972.com | www.c299.com | www.22666.com | 99567s.com | www.66376e.com | www.3032ii.com | www.716988.com | 97000.org | www.73166l.com | www.xh0066.com | 32555r.com | www.548116.com | www.a30666.com | 87680c.com | 9068tt.com | www.162323.com | www.138ppp.com | 3534a.com | www.61655u.com | www.1434d.com | www.88837e.com | 8344aa.com | www.106596.com | www.3350.vip | www.feilipu4.com | 8547e.com | wns2.net | www.51331.com | www.286600.com | t2306.com | 31325y.com | www.99jth.com | www.xpj778899.com | www.vns7898.com | sbd5551.com | www.370933.com | www.yh888b.com | www.362858.com | h4042.com | www.175568.com | www.99094y.com | www.c6444.com | l277.com | www.vns6607.com | ude184.com | www.6832m.com | www.255030.com | www.vns9.com | 4152q.com | yk801.com | www.6832r.com | www.qm999.com | www.719365.com | 3473g.com | 0687222.com | www.07163s.com | www.sb5509.com | www.76543d.com | ppjj01.com | y2516.com | www.867455.com | www.48330q.com | www.772345.com | 50023399.com | 4466buyu.com | www.679061.com | v01234.com | 6137q.com | www.338032.com | www.8d111.com | www.68277777.com | www.mgm3838.com | 5443uu.com | 3404e.cc | www.51331e.com | www.9149g.com | www.bwinyz22.com | www.vnsr33888.com | 2613u.com | 797720.com | 5360ee.com | www.c6883.com | www.4245.com | www.5888868.com | 2019lcc | sbd023.net | www.okw5.com | www.55717o.com | www.930608.com | www.yh8217.com | g77304.com | 22207z.com | 50000997.com | www.452806.com | www.50064p.com | www.62979g.com | www.133004.com | www.yinhecc44.com | 2142288.com | 09090524.com | bfvip88.com | www.373970.com | www.53536.cc | www.7714o.com | www.0622sss.com | www.13555a.com | www.365815z.com | 2247z.com | ks600.net | 566670099.com | 9958900.com | www.967699.com | www.50051d.com | www.js28666.com | www.07bet8.com | www.3171112.com | www.v15543.com | www.hg00555.com | 6245q.com | 28839z.com | 2566h7.com | 1227011.com | 0080s.com | www.235399.com | www.912063.com | www.3933u.cc | www.7782l.com | www.983258.com | www.63606u.com | www.4078o.com | www.226600r.com | www.lxyl196.com | www.8494e.com | 44pp8331.com | 88740b.com | 2649z.com | 00774bb.com | 4025d.com | 4066bb.com | www.2934w.com | www.28891e.com | www.xpj3123.com | www.s063801.com | www.71071c.com | www.85857x.com | www.0201gg.com | www.111356.com | 40033k.com | www.hj7987.com | www.50064p.com | www.88065c.com | www.hd8673.com | www.586806.com | www.52062u.com | www.383335.com | www.556939.com | 7003aa.com | www.52072p.com | www.bet365193.com | www.261610.com | www.68993261.com | www.js02345.com | www.552168.com | www.66655.com | www.302551.com | www.bj699.com | www.am0676.com | www.63877l.com | www.8694m.com | www.hgcn888.com | www.hgbet33.com | www.hg56777.com | www.4625j.com | www.sb84.com | www.js737737.com | www.bst62.com | www.998855x.com | www.85857.com | www.19019v.com | www.10999o.com | www.704901.com | www.103565.com | www.wns33.me | www.xb8822.com | www.52072d.com | www.akw0.com | www.314005.com | 299770.com | xici.net | 3679cc.com | 078mmm.com | wuxixhh.com | 6601.cc | www.zr1166.com | www.55268uu.com | www.41685.com | www.444540.com | www.063259.com | www.5099uu.com | www.1183066.com | www.3328229.com | www.50054f.com | www.hc2388.com | www.371679.com | 3151.com | g67890.com | 4018v.com | j1486.com | jsjlb99.com | www.hg009999.com | www.343888.com | www.4963vv.com | www.js89k.vip | www.50732n.com | www.979233.com | www.68689i.com | bcylc999.com | x388388.com | zhcp91.com | www.55268ll.com | www.854569.com | www.e063801.com | www.7239l.com | www.941194.com | 08119.net | 3467z.cc | 8988o.com | www.7t789.com | www.77099.com | www.6880oo.com | www.6482n.com | www.rcw8800.com | vns1.vip | 3535.cc | 61652k.com | www.me6622.com | www.1064d.com | www.764169.com | www.916025.com | 659pj.com | 5906nn.com | 7744hhh.com | www.hg353.net | www.5099uu.com | www.744678.com | 51529.com | b82365.com | yin3535.com | www.pj2299.com | www.651928.com | www.3657h.com | www.16181y.com | www.0270m.com | www.452804.com | t1429.com | 55545k.com | www.hg3968.com | www.a81b.cc | www.yh07.com | www.175901.com | 30019ee.com | zhcp36.com | www.yh18826.com | www.89677i.com | www.27775.cc | 1429x.com | mmm67890.com | www.58777i.com | www.89677g.com | www.8618aa.com | 2546u.com | 205500853.com | www.88837z.com | www.45598v.com | www.3991.cc | 5856d.com | 28288ll.com | www.2200365.com | www.828177.com | www.621351.com | y77304.com | www.8181sun.com | www.cp0058.com | www.8039l.com | 2418c.com | bet28w.com | www.57775777.com | www.88266x.com | 9964h.com | 82509as3.com | www.hg6912.com | www.4323w.com | xpj377c.com | df8r.com | www.233449.com | www.9679900.com | www.6880ff.com | www.560161.com | 33395757.com | www.p222222.com | www.97828c.vip | www.50054e.com | 634006.com | www.37533.com | www.687hg.com | 83086.com | 500000572.com | c5429.com | www.ys0033.com | www.43818m.com | fff01234.com | www.629554.com | www.47506g.com | www.378015.com | 36403377.com | www.339788.com | www.5091o.com | 51133i.com | www.5777933.com | www.jsdc9666.com | 2096t.com | 3434mmm.com | www.98698d.com | www.627212.com | xxx5657.com | www.xz1088.com | www.39546.com | pj00aa.com | www.4938k.com | www.js02347.com | 2776r.com | www.hg2207.com | www.7737ff.com | bet444000.com | 2373l.com | www.l063801.com | www.71399i.com | 66876e.com | www.x80288.com | c388.com | 71088.com | www.32031o.com | 3049q.com | www.22264400.com | www.l63568.com | 0080a.com | www.26777.cc | www.50732h.com | 623670.com | www.446677.com | www.73gcw.com | 4167z.com | www.tyc328.com | www.602917.com | 55331oo.com | www.a1432.com | 85882.com | www.892558.com | www.sdsy.com | 88772105.com | www.11132.com | www.544242.com | 6868bb.cc | www.88325y.com | 3122vip7.com | www.56520k.com | www.26878w.com | 7555v.com | www.wct555.com | www.33997u.com | www.mgm8699.com | www.0088wd.com | 5651i.com | www.bc858.cc | www.214656.com | jjfysc.com | www.88888.mx | 3559e.com | www.50999m.com | 8333.org | www.008msc.com | www.rrle2.com | cc00558.com | www.596345.com | 933620.com | www.hg7321.com | www.589411.com | 2649zz.com | www.13434f.com | 463.cc | www.9737rr.com | 3726a.com | www.yh00bet.com | www.596608.com | 14340008.com | www.41518m.com | 3868oo.cc | www.0600w.cc | 06386969.com | www.3157t.com | 6245c.com | www.hg6913.com | www.202405.com | www.7720a.com | www.73gcw.com | 9995t.cc | www.7239x.com | 3938vv.com | www.280772.com | 38238v.com | www.4136.com | 1775p.com | www.cp67775.com | 3024h.com | www.745968.com | pjhunan.com | www.66166i.com | www.5966ccc.com | www.35155q.com | 8988s.com | www.550022.com | 93922e.com | www.hg6833.com | 9339999.com | www.hg33396.com | 6261zz.com | www.5189111.com | 3726o.com | www.1bet005.com | 3559ii.com | www.0033xpj.net | 1bet2.com | www.00773e.com | dd3336.com | www.bwinyz01.com | 78666a.com | www.73990c.com | 3807x.com | www.1434r.com | jz575.com | www.4331n.com | 77002007.com | www.36166n.com | 97799x.com | www.r99999.com | 3807ff.com | www.3211msc.com | 51133c.com | www.356061.com | 2019.cc | www.06386688.com | 3566.com | www.89894l.com | 2844x.com | www.hf0168.com | www.h990.com | cdwb.com | www.sbtyc.com | 12742d.com | www.e3410.com | 5080.cc | www.61233r.com | blg008.com | www.652162.com | www.320288.com | 074f7.com | www.4136i.com | 9339999.com | www.886484.com | 55818k.com | www.811030.com | www.xpj5005.com | 29918a.com | www.4694s.com | 38365b.com | www.7239x.com | www.8520n.com | www.332052.com | www.789238.com | 30019b.com | www.1466p.com | feicai0795.com | www.579699.com | www.3814222.com | 52688q.com | www.6547.com | 3131a.cc | www.106096.com | www.68277999.com | mry04.com | www.68682g.com | www.tushan98.com | love102.com | www.sha2211.com | 61322299.com | www.918375.com | www.330007.com | yun889.com | www.4331e.com | www.0203123.com | 73055f.com | www.316088.com | aobo26.com | www.808399.com | ylzz2225.com | www.949430.com | www.6032888.com | yy4255.com | www.hg513.com | www.pjshanxi.com | 5003ll.com | www.99552ww.com | 2613z.com | www.061966.com | www.16181a.com | 0015hh.com | www.586960.com | www.50000991.com | tm700.com | www.810872.com | www.kj88a.com | hj1234.com | www.875957.com | www.706222.com | js8501.com | www.917699.com | www.602465.com | www.fh990.com | 8522rrrr.com | www.301345.com | www.4136g.com | 3096.com | 2132.com | www.3775d.com | www.32126v.net | w8685.com | www.96386s.com | www.330099y.com | 33318m.com | www.2408c.cc | www.05899.com | 11xx8332.com | www.307683.com | www.xpj2060.com | 4488c.com | www.953500.com | www.948.com | 62222u.com | 89892pp.com | www.4102i.com | www.hg10567.com | 6175h.com | www.09991.cc | www.pj2348.com | 皇冠总公司.com | www.50024i.com | www.511106.com | www.4x0048.com | 66009193.com | www.901527.com | www.00618e.com | jinlong03.com | qijidianyou.com | www.52303s.com | www.911955.com | 51599.com | dzyy634.com | www.048181.com | www.bmw8555.com | 3656jj.com | www.025728.com | www.7240p.com | www.16076.com | 4022cc.com | www.089859.com | www.80030066.com | www.jing6665.com | 6261k.com | 7935v.com | www.61233d.com | www.890555.com | 0033r.cc | 866666b.com | www.932135.com | www.4996gy.com | www.hgcn88.com | 4255ii.com | www.77803v.com | www.954321a.com | www.889tyc.com | 15920000.com | 9645hh.com | www.839991.com | www.18131.com | www.js9969.com | hjdc43.com | 33382ee.com | www.022am.cc | www.00778y.com | www.900651.com | 44222007.com | 2222138.com | www.66ffn.com | www.80188x.com | www.2846b.com | 3522cc.com | 80567d.com | www.917737.com | www.86339k.com | www.hg287.com | 3187.com | 69111w.com | 4379t.com | www.33598s.com | www.9737ww.com | www.g1018.com | 0015uu.com | qy8.com | www.290038.com | www.95666w.com | www.3333yh.vip | www.3643k.com | 85698x.com | dz75166.com | www.361477.com | www.7239y.com | www.dzj0660.com | www.44744.com | 577605.com | 22775156.com | 4182w.com | www.022x.cc | www.4102q.com | www.343478.com | www.a78bet.com | dz576.com | 11005x.com | 44446.com | www.927586.com | www.js02346.com | www.8967z.com | www.9x0048.com | 28758q.com | 66287m.com | 88851q.com | www.040417.com | www.008hy.cc | www.h6630.com | www.19019b.com | www.3569c.com | www.vns2533.com | 6150z.com | yhsichun.vip | 97297t.com | www.51365.com | www.1382002.com | www.p34888.com | gg5144.com | 5622w.com | 99909p.com | www.090392.com | www.hw8222.com | www.tyc88666.com | www.1754.com | www.998855d.com | www.4912f.com | www.hg9951.com | 8xh.vip | am559.cc | hg168f.com | dfs12345.com | tyc5504.com | www.33598d.com | www.56011y.com | www.79500b.com | www.8797aavv.com | www.yh201444.vip | feicai08059.com | 2490g.com | 9856ll.com | 6175a.com | 80060202.com | www.33598i.com | www.630137.com | www.1368u.cc | www.87668s.com | www.7920a.com | www.r80288.com | www.l5503.com | www.hg7841.com | www.27111x.com | www.yh8333.com | 50002.com | 9995c.cc | yf2111.com | 0011.se | 36406655.com | 30173311.com | 63777.com | 78666u.com | 9995z.cc | 6363w.com | 531288.com | 38648nn.cc | www.177804.com | www.389744.com | www.700590.com | www.923599.com | www.dan03.com | www.5522e.cc | www.9155a.cc | www.81520.com | www.50788n.com | www.81520g.com | www.aobo194.com | www.93919f.com | www.d88md01.com | www.xpj2886.com | www.21365vv.com | www.hg97hg.com | www.hg0656.com | www.2222wnsr.com | www.298345.com | www.hg022.com | www.15144.com | www.wn2018.com | www.1118xj.com | www.js31567.com | www.68666k.com | www.dz578.com | www.cp2y.com | www.0853g.com | www.i32126.cc | www.yh8216.com | www.www7893.cc | www.777444a.com | www.55002055.com | www.3844a.com | www.78k78.com | www.kj88822.com | www.32253.com | www.ylg07.com | www.wwwbscp8.com | www.365077.bet | www.99mgm777.com | www.4521h.com | www.jsggb02.com | www.42456688.com | www.xj112233.com | www.68568j.com | www.5091l.com | www.ch8456.com | www.672566.com | www.340477.com | 288339.com | 77778940.com | 9645uu.com | 66066p.com | 4340w.com | 73055y.com | vip4114.com | www.35530.com | www.333133j.com | www.x111888.com | www.890555.com | www.4444yh.vip | www.40288g.com | www.5500ra8.com | www.49956w.com | www.976516.com | www.342877.com | jnbzsj.com | 444000rrr.com | i1458.com | 8569811q.com | 5005b.com | www.6662558.com | www.10870.com | www.271998.com | www.262018.com | www.hg3222.com | www.hj7776.com | www.281566.com | 88894h.com | 08159t.com | pj08080.com | 87680q.com | www.900652.com | www.00013.net | www.005469.com | www.tyc44222.com | www.gocp4.com | www.101062.com | j15.com | 507767.com | feicai027.com | www.558809.com | www.833622.com | www.k69096.com | www.0601i.com | www.934277.com | P35kk.com | 1654dd.com | 22204066.com | www.ylg4499.com | www.s33558.com | www.8313i.com | www.55238c.com | www.989841.com | 0004661.com | 263377.com | ued888.com | www.39695e.com | www.5966ppp.com | www.52062q.com | www.2109b.com | www.81520u.com | afcp04.com | 6766kk.com | www.00829g.com | www.27363y.com | www.567733.com | www.926730.com | 33567e.com | 4995w.com | 87578.com | www.030033.com | www.43389.com | www.2350f.com | 30006k.com | 4508kk.com | 8290j.com | www.899238.com | www.v32031.com | www.781566.com | 8015p.com | 67890h.com | www.237015.com | www.62best.com | www.444999qipai.com | www.855762.com | 88851b.com | 67877c.com | www.77537q.com | www.06617a.com | www.25688m.com | hhh5144.com | d4212.com | www.76060i.com | www.dcw88.com | www.80075t.com | www.068630.com | 20188t.com | www.hg2083.com | www.232060.com | www.60123t.com | bogou800.vip | 8344555.com | www.v3304.com | www.55060o.com | www.530 | 9398800.com | wns4.net | www.980js.com | www.12136r.com | www.638809.com | viv.qipai78.net | 1590.co | www.618961.com | www.32123m.com | 315965.com | yf2222.com | www.778l.com | www.646869.com | www.040416.com | 36406655.com | www.9679i.com | www.621233.com | www.533721.com | 5360z.com | www.cr666.com | www.40598.com | www.763236.com | 1331ee.com | www.7669d.net | www.xj7006.com | www.672866.com | 09266333.com | www.333133n.com | www.8905.com | www.230961.com | 40033.com | www.3170005.com | www.66136.com | 6220ll.com | hh3189.com | www.b456x.com | www.ycp4.com | x333.com | www.67797a.com | www.56011j.com | www.73166a.com | wlb222.com | www.32253.com | www.71789.cc | wxc0122.com | www.7435c.com | www.j2894.com | www.177074.com | 8381v.com | www.79900.com | www.2934r.com | 6363b.com | www.56520g.com | www.7140988.com | 06382828.com | 009900t.com | www.xpj778899.com | www.596960.com | 78808t.com | www.vip6233.com | www.055p.cc | 228888u.com | www.9679t.com | www.7714n.com | p666.com | www.y00000.com | www.t09738.com | 818.cc | www.xpj7777.cc | www.483903.com | 0600c.cc | 1691899.com | www.js89q.vip | 2546w.com | 5060988.com | www.xpj3133.net | 883399r.com | www.1869l.com | www.266820.com | 249163.com | www.bjd333.com | www.jsc0044.com | 6220jj.com | www.pjbet333.com | www.86008.com | 2698a.com | www.pj3364.com | www.35918l.com | 4647099.com | www.3691d.com | www.cszb9.com | 3559eee.com | www.751cp22.com | www.454589.com | 8890852.com | www.930210.com | 64111q.com | www.g4383.com | www.660066.vip | 00778o.com | www.xb0022.com | www.ldfc8.com | 3559tt.com | www.c72.com | www.39500o.com | www.81866n.com | www.5953588.com | 1592i.com | www.hg6266.com | www.839991.com | 76700.com | www.30350g.com | c1429.com | www.88807b.com | www.5091p.com | 3788d.com | www.4727.com | 37688i.com | www.hg3733.com | www.61233pp.com | 51133ss.com | www.5099kk.com | 4023w.com | www.866918.com | www.7793k.com | wx2211.com | www.7366004.com | 2864p.com | www.yh22338.com | www.905866.com | 6220j.com | www.4833046.com | youleseo.com | www.jsc33.com | www.26878e.com | www.7669g.net | www.3933k.cc | 008.so | www.9187c.com | qy688.vip | www.soxi588.com | www.097037.com | www.hg10567.com | www.3126d.com | amjs68332.com | www.flb905.com | 28758s.com | www.170507.com | lj551.com | www.765543.com | www.372411.com | www.am9977.com | www.2632p.com | 7720r.net | www.bet365gf.co | 2214o.com | www.06386655.com | yidali.com | www.27363h.com | 6040044.com | www.v6060.com | www.luck878.com | www.hg083.com | www.726703.com | www.yl12007.com | www.fh3993.com |