150 1-75 2B 1 100 ! 5 05 1 1 2 2 4 ( ) 32 A 4 B 6 C 8 D 16 2=2 2 2=4 2 4= 8 4 8 =32 C 2l 8 9 4 () 1 6 A3 B2 C1 D 1 3 14 23 32 41 50 6 1 C 3 2 7 28 63 ( ) 215 A 125 B 126 C 127 D 128 D 5 05 16 A B C D 16. C C A 17 A B C D 17 A B C D 3 A B ABD A 18 A B C 80 D 25 18 C A B D C C 19 A B C 19 B 20 A B C D 101 20 D A B D 5 C D 1 21 D C ( ) A B C D 20 C 22 ABD 4 C C A C 22 B B D B 23 ! A B C D 23 D D 24 A D D A B C D 24 A D 25 B A 71 A B C D 71 C A C 72 A B 72 C 73 A B 73 B 74 A C 74 A 3-5cm B ? C D C D C D B D 75 A B 75 D - C D 14 15 16 C A A B C D 25 D AB C 5 D D D 6 7 8 5 1 2007 1 5 4l 45 41 1 A B C D 42 2006 1 A 36885 0 B 35297 C 25437 D 8196 2007 1 1 1+ 43 A B C D 9 ÷ 0.172÷ 0.1 1+ 4.5%= 0.045 1.045 0.05 44 A 646772 C 808465 0 8 646772 45 A 11 5 08 B 64 6772 2 D 80 84652 2007 1 =64.6772 C B64 C4 2007 1 2007 1 7 D 2.3 = 2818.6 2.28% D 30 1 46 10 2 2007 A 46 47 A 47 “ B C D B 2007 10 2 B 2007 10 24 B C D B “ 13 23 33 43 53 63 4 1 32 1 21 23 A 1 B 52 C3 5 52 D 1 65 1 = 2 +1 3 2 1 = 4+ 3 21 23 1 = 5+ 4= 1 A 52 51 A6 2 2 3 ( ) 16 B7 C8 D9 (2 1)2 +1=2 (2 2)2 +3=3 (3 2)2 +5= 6 (6 3)2 +7=16 A B C D 56 D 57 A B C D 57 C 58 ( ) A B 58 B A C C D D 59 A B 59 B 60 A B 60 D C D C D 61 A B C D 61 B 62 A B C D 12 62 A 63 A B C D 63 A 64 A B C D 64 D 1 2 3 4 65 A B C D 65 B 66 A B 66 D 2 67 A B 68 A 68 A B 69 B 69 C D 1 C D C D 13 A B C D 69 D 70 A B C D 70 ” 2007 10 24 ” 200 48 11 6 A C 48 C () B D 2007 6 3 2007 49 2007 11 20 (10+1) A B C D 49 C 2007 11 20 10 50 A B C D 10 50 B , 51 A B C D 51 C 52 A B C D 52 D 1 2 3 4 D 53 A C 53 D B D 54 A B C D 54 C 55 A B C D 55 C 11 56 6 5 1 6 60000 A 45000 B 15000 4200 C 6000 D 4800 6 ? 6%+ 60000-a 10% 10%=4200 a=45000 A 7 3 3 4 1 ? A 12 B 24 C 36 D 48 1 3 L 3= 1 4 L 1 L=24 B 8 6cm 2cm ? A 3 B 9 C 27 D 6 63 23 63 23 =27 C 9 12 A 57 85 68 62 ? B 73 C 130 D 69 x 10 3 0 5 19 ? A3 B4 C5 D6 C 0 5 0 x 3x+ 9-x 1=19 x=5 C 5 05 1 14 14-5=9 11 13 60 65 A B C D 11 A 2 12 90 A B C D 12 B BD 13 A. B. 13. B C. D. Bwenku.baidu.com 14 A B C D 14 B 15 A 15 B B C