2020-2021学年湖北省咸宁市咸安区七年级(下)期末数学试卷

学年湖省咸宁市安区七年（下）期数学试卷二选题共8小，每题分满24分）A2B1C

D9A

B

C

DAC

BDBCA32C4

B+ADC180DA5A2B1D

+4

1C+21A

B

C

DAABAA34C92

B84D4462A

B114

C

D三细填填本题小，小3分，分分请答填在题相题的置0.31.202002000220

10PP3P1180175412a1a13x

m14840

15BC12

CP16

四专解解本题小，分分请真题冷思，答应出字明证过或算骤请合写答卷应号位置171

++|2

2x21819DFABEFAEDCEFCBEFCDEBCAED20y

x+1k214A1.51

1111111111111.5C1D0.51

2D3300

B2211BC12eq\o\ac(△,A)eq\o\ac(△,)CAAeq\o\ac(△,A)eq\o\ac(△,)CBC3PBCABCAP

23AA32115B12418241CDAEC+22CDABCDEADCDEE50ABCDCBFADmABCn3BED

参考答案二精选选本题小，小3分，分分在小给的4个项只一符题，在题上正答的号上A2B1C

D9ABCD

13A

B

C

DCA

B

C

Dx2xxx2xBCA32C4

B+ADC180DA5A3ABBCADABAADCCDBCADBC4BCADCD5BCADDCA2B1D

+4

1C+2

a

b

+1

+

11AC

BDAABAA34C92

B84D44345353+58D62

A

B114

C

D43313+552+1221162360222D三细填填本题小，小3分，分分请答填在题相题的置

0.31.20200200022

0210Py32Pxxy0x2233118017544175358412a1a

01+3aa21+32aa13x

m

mx11m11

1484016xcmycmx+3y++y6+21615BC12CPABCP

eq\o\ac(△,Rt)ABC12AB13CPCPBCCP

16

50501

1234n

1+231+2+36101+2+3...+1+2+3+...+100四专解解本题小，分分请真题冷思，答应出字明证过或算骤请合写答卷应号位置171

++|2

2x229x2

4x2

xx

1

2

+

+|22

22x12

x1x1x18①+②xx2①②4y119

DFABEFAEDCEFCBEFCDEBCAED

EFCDEBCABBBEFCDEBCAED20y

x+1kxyk3x+kx+3ykxx1k1k2214A1.511.5C1D0.51

2D

B33000.5

1A2D3160302D36018200183300

111111111111111115152211BC12eq\o\ac(△,A)eq\o\ac(△,)CAAeq\o\ac(△,A)eq\o\ac(△,)CBC3PBCABCAP

A2ABC341ABC2eq\o\ac(△,A)eq\o\ac(△,)3A17

1723AA32115B12418AB563800A3B18002B+4A600mmmm1By

A4002m2m+4

14

mm1517184002+44002+44002+44002+41620017200241CDAEC+22CDABCDEADCDEE50ABCDCBFADmABCn3BED2EHAB3AB1