第一级：(最重要)

　　V06110s1,s2; V06134s1,s3; V06141(V60141)s1,s2,s3; V06144s1,s2; V07138s2,s3; V07139s2; V07141s1,s2; V07142s1,s2; V07143s1,s4; V07147s1,s4; V07148s1,s3; V30032s1,s3; V30033s1,s4; V30034s1,s3,s4; V30036s1,s3,s4; V30037s1,s3,s4; V30038s1,s2,s3; V30039s1,s3; V30040s2,s4; V30041s2,s4; V30042s3,s4; V30043s3,s4; V30044s1,s3; V30049s1,s2,s3; V30059s2,s4; V30060s1,s3,s4; V30061s1,s2,s4; V30062s2,s3; V30064s1,s2,s3; V30072s3,s4; V30074s1,s4; V30076s1,s3,s4; V30078s1,s2; V30080s1,s2,s3; V30081s2,s3,s4; V30085s3; V30090s2,s4; V50126s2; V50127s3; V50130s2,s3;V50134s4; V50147s3; V50233s2,s4;

　　第二级：(次重要)

　　V21; V26; V37s2,s3,s4; V66; V06102s4; V06111s4; V06113s2,s4; V06114s2; V06119s4; V06121s1; V06130s3; V06138s1; V06142s2; V06146s1; V06148s4; V06316s3; V07102s3; V07134s2,s3,s4; V07109s1,s3; V07112s4; V07135s1,s2; V30018s1,s3,s4; V30019; V30020; V30045s1,s3,s4; V30058s1,s3; V30079s1,s3; V30083s1,s3,s4; V40110s2,s3; V50101s1,s3; V50112s4;

(作者：环球雅思 曾丽娟)