The video owner has disabled playback on external websites.
This video is no longer available on YouTube.
This video cannot be played right now.
Watch on YouTube
B1 中级
英语
6:19
Educational
Introduction to Perfect Competition | Economics Explained
学习统计
B1
CEFR 等级
5/10
难度
评论 (0)
登录后评论
还没有评论。成为第一个分享想法的人！
互动模式
测验
正确！
不太对。
正确答案：
相关视频
Simple Daily Routine English | Easy English Listening Practice (A2 Level)
B1
12:49
Quidditch World Cup | Harry Potter and the Goblet of Fire
B1
2:01
Harry Potter and the Philosopher's Stone - Harry, Hermione and Ron meet for the first time
B1
3:35
Productive full Day School Routine | Study, selfcare and fun!! 💗
B1
8:05
Toy Story 4: Adventure of Bo Peep - Lamp Life | Full Ending Scene 1080p
B1
3:30
Federal Reserve Bank of St. Louis
测验
正确！
不太对。
正确答案：
观看视频时会出现测验
记忆技巧
来自此视频
免费开始学语言
