26:06Learning
From the PhD Lab: How do biofilms help keep bacteria alive? - with Josh Horton
The Royal Institution
A “standardized test” is any kind of test that requires all test takers to answer the same questions in the same way, like the TOEFL or IELTS. What do you think about standardized tests? Originally published at - http://learningenglish.voanews.com/media/video/2547401.html
Published 2014-12-05 · Watch on YouTube ↗
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