I use the software introduced by the teacher, which contains the vocabulary of this textbook, both in computer version and mobile phone version. Tell me to memorize the word 9, and pronounce it clearly. You can decide how many words to recite every day. The software can automatically remind you of the words you want to review, so that you can remember them after repeated review, and you can also make words into mp3 files to listen to. This is a series of gladiators, which was made by a teacher from Peking University. You can have a look on Taobao.