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Unit 10
Air
It has no colour or shape.
It has no smell or taste.
We cannot see it, but we can feel it.
It is everywhere.
It is important to all people.
It is also important to animals and plants.
We all need it to keep us alive.
Look at the kite and the balloon.
Look at the plane and the bird.
They all need it too.
It keeps them high in the sky.
What is it?
According to these pictures and other information, you need to complete this passage (根据这些照片和其他的信息，你需要补全这篇文章）
It has no colour or shape.
It has no smell or taste.
We cannot see it, but we can ______ (feel touch) it.
It is everywhere.
feel
It is _____________ to all people.
It is ______(also too)important to animals and
plants.
We all need it to keep us alive.
important
also
Look at the kite and the balloon.
Look at the plane and the bird.