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By Katya Foreman
8 July 2015
Sometimes a name becomes so well-known we forget its original meaning. A case in point is Ray-Ban, which was behind the world's first aviator sunglasses, conceived in the 1930s to ban rays from the eyes of US Air Force pilots. Though marketed under the Ray-Ban banner, it was the parent company brand, Bausch & Lomb - a US firm specialising in eye health products that came up with the invention. Developed as an alternative to the fur-lined goggles worn by pilots in the early 20th-Century - which definitely didn't perform technically - aviator sunglasses became the perfect solution to protect a pilot's eyes against the elements, help to avoid headaches and to combat decreased visibility caused by the blinding glare of the sun at high altitude.
The aviator was not to remain confined to the cockpit, however. Fitted with green lenses that could cut out the glare without obscuring vision, the first examples, which went on sale to the public in 1937, featured a plastic frame in the now-classic teardrop shape (echoing the form of pilot's goggles), but was remodelled with a metal frame the following year and rebranded as the Ray-Ban Aviator.
Adapted from <http://www.bbc.com/culture/story/20150708-the-enduring-appeal-of-aviator-sunglasses>
Based on the text, mark the option that completes the following sentence: If it had not been on sale to the public in 1937,
Resolução comentada
Sem a venda ao público em 1937, o aviator teria continuado restrito a um público específico (os pilotos).
O 2º parágrafo diz que o aviator 'was not to remain confined to the cockpit': a venda ao público em 1937 o tirou do uso exclusivo dos pilotos. No 3º tipo de condicional (If + past perfect, would have + particípio), a ideia é que, sem essa venda, ele teria permanecido restrito a um público particular.
Análise das alternativas
A e B: o status de alternativa aos goggles e de solução para os olhos dos pilotos vem do desenvolvimento original, não da venda pública. D: a mudança de armação ocorreu em 1938, não depende da venda de 1937. E: o produto é do século XX (anos 1930), não do século XIX.
Referência: Third conditional; texto da BBC Culture sobre o aviator.
Resolução comentada do VaiConcursos.