1、 2015 05 10 1. 2015 4 A 0 B C D 1 2 (2015 4 ) A 55 a a a B 7 5 3 a a a C 33 (2 ) 6 aa D32 10 ( 5 ) 2 ab ab b 3.(2015 4 ) 1 l 2 l 1= 62 2 ( ). A 152 B 118 C 28 D 62 5 (2015 5 ) 50 30 x x A 1 B 2 C 3 D 4 6.(2015 10 ) 1 x 2 x n x 4 3 1 x 3 2 x 3 n x ( ). A 4 B 7 C 8 D 19 7 (2015 5 ) ABCD B D A ABCD B B
2、D C ABCD D ABCD 8 (2015 15 ) ABCD E AD AE=2ED EC BD F EF FC A 1 3B 1 2C 2 3D 3 29 (2015 6 ) A 24 B 12 C 6 D 3 10 (2015 10 ) y=k1x+2 x A y C y= B B0 S OBC=1 tan BOC= k2 A 3 B 1 C 2 D 3 5 11 (2015 9 )2015 272000 272000 n n= 12 (2015 10 ) b a / 55 1 65 2 3 13.(2015 11 ) ABC AB=8 D E BC CA DE DE= 14.(2015 15 ) A B AB D OC AB C CD=10cm AB=60cm 15 (2015 16 ) P A CD C AB BD CD BD AB=1.2 BP=1.8 PD=12
