機經在備考雅思中的重要性（自序） Version 21 Version 22 Version 23 Version 24 Version 25 Version 26 Version 27 Version 29 Version 30 Version 3l Version 32 Version 33 Version 34 Version 35 Version 37 Version 38 Version 39 Version 40 Version 41 Version 66 Version 67 Version 68 Version 69 Version 70 Version 71 Version 20023 Version 30014 Version 30015 Version 30018 Version 30019 Version 30020 Version 30079 Version 30036 Version 30037 Version 30038 Version 30039 Version 30040 Version 30041 Version 30042 Version 30043 Version 30045 Version 30049 Version 30052 Version 30058 Version 30059 Version 30060 Version 30061 Version 30062 Version 40101 Version 40102 Version 40103 Version 40104 Version 40106 Version 40108 Version 40109 Version 40110 Version 40112 Version 40202 Version 40203 Version 40213 Version 50101 Version 50105 Version 50121 Version 50127 Version 06134 Version 06138 Version 06316 Version 30032 Version 30033 Version 30034 Version 30044 Version 30072 Version 30074 Version 30076 Version 30078 Version 30080 Version 30081 Version 30083 Version 30085 Version 30086 Version 30090 Version 50109 Version 50110 Version 50121 Version 50130 Version 50133 Version 50134 Version 50147 Version 50233 Version 50301 Version 60101 Version 60102 Version 60108 Version 60110 Version 60111 Version 60113 Version 60114 Version 60119 Version 60121 Version 60125 Version 60130 Version 60141 Version 60142 Version 60144 Version 60146 Version 60148 Version 07118 Version 07134 Version 07135 Version 07137 Version 07138 Version 07141 Version 07142 Version 07234 Version 07102 Version 07147 Version 07148