点击购买此书全本PDF电子书
Lesson One E H I M 1
Lesson Two A B K L 6
Lesson Three G N O S 11
Lesson Four U D Q T 16
Lesson Five Y C R 21
Lesson Six W F J V 26
Lesson Seven P X Z 31
Lesson Eight A B C Song＆The Number Song 36
单词表 38