test ⅰ (lesson 1-lesson 8) test ⅱ (lesson 9-lesson 16) test ⅲ (lesson 17-lesson 24) test ⅳ (lesson 25-lesson 32) stage test ⅰ (lesson 1-lesson 32) test ⅴ (lesson 33-lesson 40) test ⅵ (lesson 41-lesson 48) test ⅶ (lesson 49-lesson 56) test ⅷ (lesson 57-lesson 64) test ⅸ (lesson 65-lesson 72) stage test ⅱ (lesson 33-lesson 72) test ⅹ (lesson 73-lesson 80) test (lesson 81-lesson 88) test (lesson 89-lesson 96) test ii (lesson 97-lesson 104) stage test ⅲ (lesson 73-lesson 104) test v(lesson 105-lesson 112) test xv (lesson 113-lesson 120) test xvi(lesson 121-lesson 128) test xvii(lesson 129-lesson 136) test xviii(lesson 137-lesson 144) stage test iv (lesson 105-lesson 144)
以下为对购买帮助不大的评价