Helicopters with no people - level 1, A12
When you see a helicopter, you think that there is a man in the helicopter. This man controls this helicopter. Usually, there is a man there, but some companies make helicopters and planes with no pilots. These machines usually help the army or farmers.
People make more and more of these machines in the US and China. One Chinese company sells three times more than 2 years ago. They have a big plan. They want to make more machines and sell them in many countries.
Written by Danny News in Levels
Interesting words: army, farmer.
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