New ideas sometimes have to wait for years before _______.

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• 1After he became conscious ,he remembered  ______ and  ______ on the head with a rod.     

  A.to attack：hit

  B.to be attacked; be hit

  C.attacking；behit

  D.having been attacked; hit

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• 2We're looking forward to _____a chance to watch the opening ceremony of the London 2012 Olympic Games.     

  A.give

  B.be given

  C.giving

  D.being given

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• 3The bird was lucky that it just missed______.   

  A.being caught

  B.to be caught

  C.catching

  D.caught

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• 4 ______  to nuclear radiation, even for a short time, may produce variants(变异)of genes in human bodies.   

  A.Having exposed

  B.Being exposed

  C.Exposed

  D.After being exposed

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• 5The young lady prefers dressing up for a party to _____ by others.     

  A.be noticed

  B.being noticed

  C.having been noticed

  D.have been noticed

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• 6He kept silent over the matter because he had no intention to risk ______ in it.

  A.to involve

  B.being involved

  C.to be involved

  D.involving

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• 7_____ twice a year, whether it is a car or a bus or a truck, is the rule that every driver must obey in this city.

  A.Examining

  B.Examined

  C.Being examined

  D.Having been examined

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• 8____ to sunlight for too much time will do harm to one s skin.

  A.Exposed

  B.Having exposed

  C.Being exposed

  D.After being exposed

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• 9Mr. Jenkin regretted _____ his secretary for the mistake, for he later discovered it was his own fault.

  A.to blame

  B.being blamed

  C.blamed

  D.having blamed

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• 10Sometimes customers can't help _____ the things they don't really need.    

  A.persuading to buy

  B.to be persuaded into buying

  C.being persuaded to buy

  D.to persuade into buying

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