1、 2016-2017 5 3 30 1 2 2 = 2 2 3 a a = 3 2 2 ) 3 ( a = 4 2 , 3 n n y x n xy) ( 5 2 ) 3 2 ( x = 6 =53 7 1 AB/ / CD 1=50 2= 8 3, x, y x 9 5 1 1 2 2 3 10 2 ABC ABC l B= 3 30 11 2 3 ) (x A. 5 x B. 6 x C. 2 3x D. 3 2x 12 0.000 00214 A. 5 10 214 . 0 B. 6 10 14 . 2 C. 6 10 14 . 2 D. 5 10 14 . 2 13 A. B. C.
2、D. 14 2 2 ) 1 ( ) 1 ( a a A.2 B.4 C. a 4 D. 2 2 2 a 15 4cm 9cm 1 2 lA.17cm B.13cm C.22cm D.17cm 22cm 16 A B C D 17 30 A.60 B.120 C.150 D.90 18 3 1= 2 ABD ACD A. BD=CD B. AB=AC C. B= C D. BDA= CDA 19 . 4 24 A 5 B 5 C T( ) D 5 24 20 A. B. C. D. 4 22 21 5 2 3 2a a 22 5 102 98 3 4 23 6 2014 2 ) 1 ( 2 1 24 6 : ) 2 )( 2 ( 2 x x x 4 28 25 7 , : ) 3 )( 3 ( ) 1 ( 2 a a a 3 a . 26 7 AC=BD, 1= 2 ABC DCB. 7 ADE=70 , 2=35 , DF ADE, DF BE. _ 1= 2 1 _ = _ = _ 2=35 _ DF BE 28 7 AOB, OP, AOP= BOP. 2 10 29 5 / 0 4 8 12 16 20 24 / 1.2 1.5 1.8 2 2.3 2.7 3 1 2 2 12 1 3 2 30 5 A B A B
