Questões Militares Sobre inglês

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The Radar

The word RADAR stands for Radio Detection and Ranging. It is a technology which was properly used for the first time during the Second World War by the allied troops against the Germans. Basically, a radar is an anti-collision tool and can measure the bearing and the distance of a selected target. It is therefore a vital aid on ships and airplanes, especially in case of low or blind-visibility navigation. To detect a target’s position, the radar dish or antenna sends out pulses of electromagnetic waves. When these waves hit the target their echo is returned to the aerial and transformed into visual signals shown on a screen called PPI (Plan Position Indicator) or display. The capacity of the antenna to concentrate the irradiation energy in the dish is called gain. The whole process is based on the principle that radio waves bounce off solid surfaces. It is therefore possible to determine the bearings and distances of far away targets and deduce infonnation about potential hazards. The Radar can also be used to find out the position of a ship at sea, but only in the case in which a fix (a fixed point of reference on the land) is available. For this, other more precise, handy and faster tools, like the GPS, are used.

(Adapted from: Flash on English for Transport and Logistics)

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Language, brain and disability
It has often been remarked that we come to appreciate_____unique complexity and function of language only when it starts to go wrong. This happens daily in many small ways - when we detect ambiguity, express ourselves incoherently, or speak at cross-purposes. Less commonly, it happens in _____ dramatic and devastating manner, in _____ form of language disability. Those who find it difficult or impossible to communicate, on account of some physical, psychological, or other disability, face _____ frustrating, isolated, and uncertain future, in which their disability is often not recognized, and community support services may be inaccessible or absent. Drawing attention to ______ existence and extent of language disability is thus _____important role for any encyclopedia of language.
(Adapted from: The Cambridge Encyclopedia of language)

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I - There are a lot fewer opportunities in this country. II- He is the nicest when he’s with children. III- He’s more lazy than stupid. IV- He explained it all carefully, but I was still none the wiser. V- Is this the first time for you to stay here ?

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