SóProvas


ID
338713
Banca
COSEAC
Órgão
DATAPREV
Ano
2009
Provas
Disciplina
Inglês
Assuntos

GadgetDesigners Push the Limits of Size, Safety
By Brian X. Chen, August 28, 2008

Just as small, fast-moving mammals replaced lumbering
dinosaurs, pocketable gadgets are evolving to fill niches that
larger, deskbound computers can't reach. But as they shrink,
these gadgets are faced with problems mammals face, too,
such as efficiently dissipating heat.

The recent example of Apple's first-generation iPod nanos
causing fires in Japan raises the question of whether
increasingly innovative product designs are impinging on
safety. The nano incident illustrates how risk can increase as
devices decrease in size, says Roger Kay, an analyst at
EndpointTechnologies.

"As [gadgets] get smaller, the tradeoffs become more difficult,
the balance becomes more critical and there's less room for
error," Kay said. "I'm not surprised it's happening to the nano
because that's the small one. You're asking it to do a lot in a
very, very small package and that's pushing the envelope.”

There's no question that industrial designers' jobs have
become much more difficult as the industry demands ever
more powerful and smaller gadgets. With paper-thin
subnotebooks, ultrasmall MP3 players, and pinkie finger-
sized Bluetooth headsets becoming increasingly popular, it's
questionable where exactly designers draw the line between
innovation and safety.

Boeing ____ this week that it ____ successfully ____ a manned airplane powered _____ hydrogen fuel cells.

Alternativas
Comentários
  • Alguém para explicar?

  • A preposição correta seria "by"(por, pelo, pela). Alternativa A está incorreta devido à preposição "on".

    "Boeing anunciou nesta semana que voou com sucesso um avião tripulado movido por células de combustível de hidrogênio."


    Alternativa B está incorreta devido ao uso do verbo no presente perfeito (has announced).

    "Has announced" poderia ter sido usado, se na frase não fosse mencionado o tempo (this week). Quando o tempo é mencionado, o correto é colocar o verbo no passado simples (announced) .

    Ex: Boeing has announced that it has successfully flown a manned airplane powered by hydrogen fuel cells.

    Boeing announced this week that it has successfully flown a manned airplane powered by hydrogen fuel cells.


    Ainda na alternativa B foi empregado o verbo no passado perfeito "had flown",(tinha voado), o que também caracterizou um erro.


    Alternativa C está correta. Os verbos e a preposição foram usados nas formas corretas.



  • Ocorre que:

    Boeing announced (Aqui não poderia ser has announced porque é uma ação que terminou) Para: he/she/IT - HAS  
    -by: (por, pelo, pela). Ou seja, um avião tripulado foi abastecido POR  hydrogen fuel cells.

    Sucesso!!!
  • c)announced / has / flown / by;

    Announced vs has announced.

    O 1° é simple past e o 2° present perfect. Ambos se referem a uma ação passada. Simple present é usado quando há informação de quando uma coisa aconteceu. Present perfect nao tem espeficação de quando a ação ocorreu. compare:

    I have lost my wallet. 

    I lost my wallet yesterday. 

    A regência nominal de powered (collocation) é by. 

  • Dicas Presnt Perfect

     

    Não use com datas dizendo quando aconteceu. Veja a diferença: Present Perfect: My family has been to London.
    Simple Past: My family traveled to London in 2005. 

     

    Não use com ações deinitivas e pontuais, como nascer ou morrer.
    Present perfect pode ser usado com viver: They have lived a long, happy life. Nascer, que é algo pontual, tem um momento exato, cca com o simple past: Her child was born yesterday.