4 ,\r ! "50# $?"%\r&'()*+,(./,0)23\r4#1.6 2.00 2. 20500 5.05 3. (1)44 (2)26 (3)36 (4)8 4. 0. 75\r75 5. < = 45 > = 70 6.4 3.2\r0#1.B 2. C 3. B 4. A\rB#1.0. 728 0.6 14 6.5 2 7 2.CDEP5. 15 14. 15 3.6. 35 62\r6#1. F < = 2 0 > = 70 G > H 2 0 = > H 1 5 =\r2. (1)I/EP21X2 + 14=3(M N ) (2) (14+4) 2 3 T 2=27(PMN)\r# 1. Q RS T U V W X x Z N P 79X3+3\357 ]40\r2.45X2X0. 35=31. 5(^ ) 45X2X0. 26=23. 4(^ ) 31. 5-23. 4=8. 1 (^).\r3.QRS`abcdex f,ghbcVe`11-4 fP 6x+ll-x X4=52\r\4 VeR11-4=7f\n4. 8X [120X 60+4X 3 ]=4800^\n4800<5000\r2:5000^jP\r 0@ Q RS ? x k ?`50-x P6l `50-x X 4= 50\25\r :50-25=25\n
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