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Explore Wonders | Find: 英语四级成绩单没发怎么办{官网:ｚｊｗ２１１.ｃｏｍ}淮安学历认证报告是什么样子的图片-一年拿本科学历（证件网:ｚｊｗ２１１.ｃｏｍ)一比一仿亚美尼亚驾驶证UM | Wonderopolis

Wonderopolis

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Who Was Duke Ellington?

Learn about a jazz legend in today’s Wonder of the Day!

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Who Was Duke Ellington?
What Are Filler Words?

So…um…we think…uh…that…you know…you’ll like today’s Wonder of the Day…um…yeah!

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What Are Filler Words?
What Is Psithurism?

Today’s Wonder of the Day is filled with a familiar, soothing sound!

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What Is Psithurism?
What Is Mustard Made Of?

Hot dog! Join us today for a bright-yellow Wonder of the Day that goes great with ketchup and is a perennial picnic favorite.

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What Is Mustard Made Of?
Do Animals Dream?

Is today’s Wonder of the Day real? Or is it just a dream?

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Do Animals Dream?
Why Are Brick Houses So Strong?

You can huff and puff, but you won’t blow down today’s Wonder of the Day!

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Why Are Brick Houses So Strong?
How Can You Tell How Old Animals Are?

Today’s Wonder of the Day might have you saying “Happy Birthday!” to everything from aardvarks to zebras!

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How Can You Tell How Old Animals Are?