2020-2021学年华东师大版八年级下册数学期中复习试卷

2222学年华东师大新八年级下册学期中复试卷一选题共12小题，分分每题4分

+

A2

B3

C4

DAB

CD

x10A

B

C

DA

B

C

D+A2

2B3

xaC4D6A1

B1C1D1abc+bA

B

C

DFDFBAD70

222222A50

B60

C70

D80ABCDOABD4BCA2B2C

D10ABCBCAGEAAG1/sF3cm/EFsCFA1B2D11ABCDACBDOE15BOEA85

B80

C75

D7012abCEFGCDGBEDGDE

BG2

b

A①

B②

C①②

D①③二填题共8小，满32分，小分130m1415

x116

+

17x

2a18ABCDACEC19ACBD2BD20AB4BC5ABDBCFAEFD

三解题共7小，满70分）213

|+2cos45x

x3221236ACFBDFDF24717600218429257ABCDPPCADEPCFBF12BCP3cmAE

26OACOMNMNBCAEBCAF1OEOF23ABC27MFCM1ABM232

MENF

参考答案试题解析一选题共12小题，分分每题4分

c

ABCDBC

D

B+xyxyC+1xyD

22222222+13+12+13xx1a2a33xx+20x1112x1a0aDABCD70DCFDC70110ABFCBFABC3575BCFDCFBCFDCFSASCBFCDFDCF35C

ABCABCDABDCBDABABD30ABC2

AD

10Ftcm3CFBF83AGAECFttFCAE3CFBFBCtcmAGAECFt3tt2sACF

D11ABCD是BADABCOAACOBBDACOABADABEBEEAOBAO+15ABOABOBE30OBBOE180C12EGBEDGCEFGCGECGBCEDCGBCDCCGCEBCEDCGDGBEDBE+EBC++DBE+EBC+90DBE+CDEBDC180

22222222222222222222222222222277DMBDG①DGDM

BMME

MG

EGDMBMMEMG+EG+DE+AD++CG+2a2+2bBG+DE2③D二填题共8小，满32分，小分130.000000﹣10m14

15

16

17

2ax22xaa12a0a

222212a0a0.50.5

318ABCD是ACBADECEACB+CAEEADBCDAE22.519ACB2ABCDBDAC420345BCAB+ACBACABDDABEACDAE150FBCDBF++60ABCDBF

AEFDAEFDABCSASDFAEEF4DAEF30FMADMDF3FDADFADFM46AEFD三解题共7小，满70分）2113+|22

|+2

2x

2222xx1x+2x2x2xxx2x23ABCDABCDBDBD90ABECDFAASDF24184x2x10x1010/

2

+

13+2000.98000+17600251PQPEFEEPFAB

EFBFBFEP2ECP

PECD+90AEP+APE3126OFGCFCEBCOCFGCFOECOFCEOCOEOFO2OACOCOEOFOFOAOCOEOFOAO++FO

ACEF3ACACBAECF2O的AECFACB90AOEACB90EF271