Black boxes, _____ to record flightdata together with pilots" conversation and

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Black boxes, _____  to record flightdata together with pilots" conversation and noises from theaircraft,
are important for people to find out the cause of an aircrash.      [     ]
A. design
B. designing
C. designed
D. were designed

答案

举一反三

Here are some new computer programs  ___ for home buildings.   [     ]
A. designing
B. design
C. to design
D. designed

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The players   ____ from the whole country are expected to bring us honor in this summergame.     [     ]
A. selecting
B. to select
C. selected
D. having selected

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Michael put up a picture ofYao Ming beside the bed to keep himself  ___  of his owndreams.   [     ]
A. reminding
B. to remind
C. reminded
D. remind

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It is often ____   that human beings are naturally equipped to speak.    [     ]
A. said
B. to say
C. saying
D. being said

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_____  not to miss the flight at 15:20, the  manager set out for the airport in a hurry.   [     ]
A. Reminding
B. Reminded
C. To remind
D. Having reminded

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