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The airplane ________off in half an hour.It's time to check out tickets.(  )A.took B.takes C.has ta...

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Finch's airplane is a jet plane while Earhart's was not.  Finch's airplane is equipped with the modern navigation and weather-tracking systems.  No differences have been found. Finch's airplane is an exact copy of Earhart's in every aspect.  Finch's airplane is an improved version of Earhart's in flying speed and altitude.  
turning it off   turn it off   to turn it off    having turned it off  
will function    functioned    is functioning    has functioned  
will take off    has taken off    takes off    is taking off  
Because it remains a mystery what wavelengths are liable to be interfered with.  Because it is extremely dangerous to conduct such research on an airplane.  Because research scientists have not been able to produce the same effects in labs.  Because experts lack adequate equipment to do such research.  
APU电门放到OFF位,并到M280上按压超速复位电门  APU电门放到OFF位  检查APU滑油量  APU电门放到OFF位,并到ETC上按压超速复位电门  
exceptional    strange    unique    rare  
exceptional    strange    unique    rare  
She was successful in her world flight.  Her airplane was blown away by the strong winds over the equator.  She lost her way after failing in.communicating with the Naval station around the equator.  D) Her airplane disappeared while flying over the Pacific Ocean.  
Aeronautical Fixed Telecommunication Network  Airplane Fixed Telecommunication Network  Aeronautical Fixed Telephone Network  Airplane Fixed Telephone Network  
车速在0㎞/h,变速杆在“P”位置  车速在0㎞/h,变速杆在“N”位置  车速在5㎞/h,变速杆在“P”位置  车速在5㎞/h,变速杆在“N”位置  
exceptional  strange  unique  rare  
timetable  plan  date  schedule  
it has no wings  it uses solar power  it takes off and lands vertically  it can land on water  
shipment  ship  car  airplane