Correct answer
They can contribute to noise and chemical pollution.
They can contribute to both noise and chemical pollution. Noise can come from the engine, rolling tyres and horn; pollutants can arise from exhaust and wear of components such as tyres or brakes. A catalytic converter reduces certain emissions but does not make all pollution harmless or eliminate noise. The question does not claim these are a car’s only environmental impacts.
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They can generate only noise, never chemical pollution.
They can generate only chemical pollution, never noise.
They can contribute to noise and chemical pollution.
The real exam in English is a translation of the Spanish original; compare both here.
Show the Spanish original
¿Qué afirmación sobre la contaminación causada por los automóviles es correcta?
- Pueden contribuir a la contaminación acústica y a la química.(Correct answer)
- Solo pueden generar ruido; nunca contaminación química.
- Solo pueden generar contaminación química; nunca ruido.
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