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
12:33
Educational
Genes, DNA & chromosomes | Heredity & Evolution | Biology | Khan Academy
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
Lead Actress in a Drama Series: 74th Emmy Awards
B1
3:07
Who am I? A philosophical inquiry - Amy Adkins
B1
4:59
Top 10 Famous Speeches
B1
16:11
TIKTOK DANCE MASHUP FEBRUARY 2026 || TIKTOK DANCE TREND 2026
B1
12:13
Matt Rife on How TikTok Stopped Him from Quitting Comedy | The Tonight Show Starring Jimmy Fallon
B1
8:00
Khan Academy India - English
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
