ʱ : 黑龙江省绥化?019-2020学年中考数学一模考试卷含解析 - 百度文库ϿʼĶ
ʡ绯2019-2020ѧпѧһģԾ
һѡ⣨12С⣬ÿС4֣48֣ÿСĸѡУֻһǷĿҪģ 1˵Уǣ
Aȫһ Bһ Cȱһ Dֱһ 2иУСǣ A4 B3 C0 D2
3ͼֱ֪ABCDֱACأABCDEƽһ㣨EֱABCDACϣBAE=DCE=£иʽ٦+£ڦ£ۦ©360㩁£AECĶǣ
A٢ڢ B٢ڢ C٢ۢ D٢ڢۢ
?x??2?45x2y9з̹ɵķĽΪ?1( )
y??2?Ax2y1 C5x4y3
B3x2y8 D3x4y8
5ͼֱabֱcأab1=50㣬3=120㣬2ĶΪ
A80 B70 C60 D50
6(a?2)2?2?aô Ax?2
Bx?2
Cx?2
Dx?2
7yx2x+1ƽ2λȣƽ3λȣߵıʽΪ Ayx2+3x+6
Byx2+3x
Cyx25x+10
Dyx25x+4
8ABCֱ߳51312Բ뾶Բ뾶ֱǣ A135
B6.53
C52
D6.52
90.3303ĸУǣ A0.3 10A?2
B3
C0
D3
2x?1?3Ľǣ x?1B?1
C2
D4
1x2?2x?111(1)µĽ( )
xxAx1
B
1 x?1C
x x?1D
x?1 x12ABڵGD֪ͼڡABCУABĴֱƽ߷ֱBCAGCܳΪ31cmAB=20cmABCܳΪ
A31cm B41cm C51cm D61cm
⣺6С⣬ÿС4֣24֣
13˺šҹȫ֪ʶȨﵽȽˮƽĶг˺šٶȱԭгٶÿСʱ50ǧףٺӱϺʱ30ӣ֪ӱϺȫԼ1320ǧף˺šٶȣ衰˺šٶΪxǧ/ʱ⣬зΪ__ 14֪εĻΪ?ԲĽΪ45㣬ΰ뾶Ϊ_____ 15ֽʽab29a=_____
16ͼYABCDУAB=8PQΪԽACȷֵ㣬ӳDPABڵMӳMQCDڵNCN=__________
17йŴѧרз⡰ֻȸֻ࣬1(16)ȸᣮһֻǡһأÿֻȸΪxy⣬ɵ÷Ϊ___ 18ͼƬOABCƽֱϵУAΪ30P12ƬϣƬ½ǵĶ㰴˳ʱ뷽ת90㣬һתͼλãڶתͼλáƬת2017κPΪ____________________
⣺9С⣬78֣Ӧд˵֤̻㲽裮
196֣ͼ֪RtABCУACB=90㣬ACBCCDRtABCĸߣEACе㣬EDӳCBӳཻڵF֤DFBFCFıABȡһGAE?AC=AG?AD֤EG?CF=ED?DF
?е㣬CֱCDAED206֣ͼABΪOֱEڡOϣCΪBEACBC
1жֱCDOλùϵ˵ɣ 2AD=2AC=6ABij
216֣ijУΪڡУбֻͬѧʼDZֱΪƷ֪5ʼDZ2ֱ֧ʹҪ100Ԫ4ʼDZ7ֱ֧ʹҪ161Ԫ 1ʼDZֱʵĵ۸Ԫ
2ǡáһ̵СŻݴ취£ʼDZ9Żݣֱ10֧ϳ8ŻxʼDZҪy1Ԫxֱ֧Ҫy2Ԫy1y2xĺʽ 3ͬһֽƷҸýƷ10ֽƷʡǮ 228֣֪ͼABCDУEFֱBCCDϣAE = AF
֤BE = DFACEFڵOӳOCMʹOM = OA
EMFMжıAEMFʲôıΣ֤Ľۣ
238֣ijβͳ˽ꡰ?һżڼABCDĸξƳͼʾͳͼͳͼͼеϢ⣺
1ꡰ?һżڼĸ㹲Ӵο͵
2ͳͼоAӦԲĽǵĶǶ٣ֱӲȫͳͼ
3Ԥ⣬ꡰ?һżڼ佫90οѡеĸΣж˻ѡȥDΣ
2410֣УСдÿλѧд39鲿ѧдǸݳƵͳͼһ֣ A B C D E ȷx 0x8 8x16 16x24 24x32 32x40 10 15 25 m n Ϣ⣺
1ͳƱУm= n= ȫͳͼ 2ͳͼСC顱ӦԲĽǵĶ