选择BBCDDBCCAA填空11,1.894-12,44度29分,13,4/5a,14,75,15,-8.5,16,2.4,17,14,18,G,1计算19,-11,20,4/3,21,-59/14,22,-9.23,5,24,4,25,DB,AD,点B为线段AC的中点,8,26,设甲为x,则乙为（x-4）人,方程x+17=3【（x-4）-...