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Level 7

Unit 3. Part 3.

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green light
Official approval for something to be done.
false alarm
When you think something bad is going to happen, but it does not.
under control
A problem that you are dealing with successfully.
to confirm
To prove that something is true; to tell someone that something will definitley happen.
The substance used to make tires.
Small; not much.
The highest point; the top.
rotation speed
The speed at which the aircraft's nose wheel just lifts off.