1、2021 年上海崇明區(qū)中考學(xué)二模試一選題共 6 ?。?A2 B2 4 D A+1 B20 C yx 0 D 0ABCD 3 ABCD ABCDO A 3cm OA5cm OB 3cm ABCD二填題共 12 小題）a3a 10 x 11 12 13 50 14 15 12 16 BC 17 ABCD 34 CD 5 CQ 18 x OA y+ 4 OB + 三解題（大共 ，分 78 分）19 20 21O AB58sin 1 AC 2O 22 500 2 12 500 3 23 ABCD ADAB BC B 1AD22 24 y AB yx2+bx B D12 3 E 3 P 3 AED 25

2、 1 ABCD E CD F AD EFBD G1 ABCD 2 AFxAB y 3 AB4 A B F B 參考答案一選題共 6 ?。?A2 B2 4 D 8 A+1 B20 C0 D 0 x+10 x x0 x +10 1 0 x1 C yx ABCD yxk2b0 y2x1 3 ABCD 3D ABCDA B B C C D D O A 3cm OA5cm OB 3cm ABCD OA5 OBcm O O O O AB D二填題共 12 小題）a3a 24a222 23 xx xx x x310 x1 1+1 k0k x 111 y 03k36 y 12 1001010010% 10%1

3、0%13 50 1 14 7215 12 50 12 50122 261316 BC +D + + GD AD +17 ABCD 34 CD 5 CQ 54PQAPAPQABC+BAP90APB+ BPQABP 18 x OA y+bx+ 4 OAB + OAB OA OA4 40B22 y+ 4 ax2bx+4 a+ 三解題（大共 ，分 78 分）192+2212+21120 ，x+3 x+3y 0 21 ABC AB5sin 1 AC 2 1 AHBC HsinAHBH AB CHBHCH4 52 OCAOAO EOBAO BC BO22+2BO216+32BO 22 500 2 12 5

4、00 3 1 y 200 300 2 m m10 m m29 301077 80 29 77 30 80 23 ABCD ADAB BC B 1AD22 1 ABCD AD BCDCADEDECAEDCAEDADEDEC 22DEC 24 y AB yx2+bx B D12 3 E 3 P 3 AED 1 yx3 x0 yy0 x330B03 A30B0 yx2bx+ yx2232x22x124D4A3 AD1 21 2BD2AD 90 3OAOB390 145OB345AED135PAC x yx3 x1 2 yx2x3 y0 1x 3 12C01442 x 41 AP2 AP4AQ 5AQ 7P 52425 1 ABCD E CD F AD EFBD G1 ABCD 2 AFxAB y 3 AB4 A B F B 1 FE ABCD k ABADk DECE ABCD ADCBDC ADC 45BD4545DFDE ABCD ADADBC 2 FE DFa