This year is difficult for airlines. People cannot travel. Planes do not fly.
Airlines park planes. Sometimes, more than two thirds of planes are on the ground. It is a very big number. It never happens in the past. Planes are starting to fly again. Some people still worry. They are not sure that planes are safe.
Planes need to fly. If they do not fly, they can have many problems. It is possible that their batteries do not work well. Birds and bugs can make nests inside.
Another problem is that pilots stay out of work. They can make mistakes. Many small accidents happen this year. Experts say that pilots need to train. They can fly again after they train.
Quais problemas não foram citados no texto caso os aviões não voem?
A) As baterias podem não funcionar bem.
B) Insetos pode pôr ninhos dentro deles.
C) Pássaros podem colocar ninhos dentro deles.
D) Pessoas podem ser infectadas entro deles.
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Resposta:
D) Pessoas podem ser infectadas entro deles.
Explicação:
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