Questão de Informática

Read the text below: Scanner 'ends checkout woes' An electronic scanner which can read the entire contents of a supermarket trolley at a glance has just been developed. The Supertag scanner could revolutionise the way people shop, virtually eradicating supermarket queues. The scanner would have a double benefit for supermarkets removing the bottleneck which causes most customer frustration and reducing the number of checkout staff. The face of retailing will change even more rapidly when fibre optic networks being built by cable TV companies begin to be more widely used. Customers will be able to place their orders from home, using a handset to flip through menus on their TV screens. The day cannot be too far off when the weekly shopping ordered from home will be collected later from the supermarket, already in a trolley. The customer will wheel it through a Supertag-type scanner, pay electronically using a plastic card, and be off home within minutes. ASPINALL, Tricia. CAPEL, Annette. Advanced Masterclass. Oxford University Press. Page 177. Glossary woes: suffering at a glance: quickly trolley: is used to carry things you buy in a supermarket retailing: selling 18. ‘The face of retailing will change even more rapidly when fibre optic networks being built by cable TV companies begin to be more widely used'. If we would write this sentence in the past time, we would change the verbs WILL CHANGE and BEGIN respectively for: A) changed / had begun; B) had changed / began; C) changed / had begin; D) was changed / began; E) have changed / had begun. 19. ‘An electronic scanner which can read the entire contents of a supermarket trolley at a glance has just been developed'. In this sentence the words AN, READ and AT are grammatically classified respectively as: A) article / preposition / noun; B) article / verb / preposition; C) article / verb / noun; D) noun / verb / conjunction; E) noun / adverb / preposition. 20. Sally said: 'It's fantastic to realize that XYW Computers created so many high-tech gadgets last year'. If we wish to tell someone what Sally said, we could say: A) Sally said that it is fantastic to realize that XYW Computers had created so many high-tech gadgets last year; B) Sally said that it is fantastic to realize that XYW Computers created so many high-tech gadgets the year before; C) Sally said that it was fantastic to realize that XYW Computers has been created so many high-tech gadgets the year before; D) Sally said that it was fantastic to realize that XYW Computers had created so many high-tech gadgets the year before; E) Sally said that it was fantastic to realize that XYW Computers created so many high-tech gadgets last year.