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Rachel's English
Idioms - learn 9 idiomatic expressions from real spoken English
Idioms are very common in spoken English. In this video you will learn nine Idiomatic expressions that you can use in everyday conversation. As you know, spoken English is quite different than written English-and idioms are a big part of...
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Where Do Teeth Come From?
Surprisingly, dinosaur teeth and human teeth have a lot in common. Scholars discover how teeth form during embryonic development. They then compare fossil evidence of the similarities of teeth of ancient species.