20. Mark the title that best expresses the main idea of the text.
A) Fuel cell research and the latest automobile developments.
B) How to reduce en...
20. Mark the title that best expresses the main idea of the text. A) Fuel cell research and the latest automobile developments. B) How to reduce energy consumption in the U.S. C) The role of technology in generating environmental benefits. D) The impact of advanced technology on the oil and natural gas industry. E) Automating oil refineries to improve operational and environmental performance.
A alternativa que melhor expressa a ideia principal do texto é a letra A) Fuel cell research and the latest automobile developments. O texto trata do desenvolvimento de células de combustível e suas aplicações nos automóveis mais recentes.
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