cd 0.Listen/C3
Chapter 1: https://www.bilibili.com/video/BV1QG411a7fy
vim 1/xxx # format like test_sample
./check.py 1/1 1/xxx
./practice.py # load incorrect_words.json
https://github.com/RealKai42/qwerty-learner/blob/master/public/dicts/IELTS_WANG_3.json
jq '.[0:112] |' IELTS_WANG_3.json > C3_1
jq '.[112:255]' IELTS_WANG_3.json > C3_2