北京英语口语证书考试
北京英语口语证书考试 Beijing Oral English Certificate,简称BOEC 是北京市教育委员会、北京教育考试院、北京英语口语证书培训考试领导小组在北京市率先推出的一项测评英语口语水平的考试。
- 2014-06-04 - 收藏Khan Academy
Learn for free about math, art, computer programming, economics, physics, chemistry, biology, medicine, finance, history, and more. Khan Academy is a nonprofit with the mission of providing a free, world-class education for anyone, anywhere.
- 2014-05-22 - 收藏