Variant-1 share your ideas about the text from the history of aviation

environment
the last step before heading into the aircraft
engine	a person or company who makes goods for sale
speed	a machine capable of flight
height	the process of accurately ascertaining one’s position and planning and following a route
manufacturer	a tool, especially one for precision work
designer	the surroundings in which a person, plant or animal lives
boarding	the rate at which someone or something moves
instrument	a person who plans the look of something by preparing drawings or plans
navigation	a measurement of someone or something from base to top

IV Continue the sentences correctly with the below given words:
1. Aircraft instruments are basically devices for _______________________.
2. Their purpose is to ____________________________________________.
3. Modern aircraft have ___________________________________________.
4. Instruments concerned with the whereabouts of an aircraft are _________.
5. An aircraft usually takes the name of ______________________________.
6. The name of the designer or manufacturer is followed ________________.

1. 
   navigation instruments
   
2. 
   detect, measure, record, process and analise the variables encountered in flying an aircraft
   
3. 
   a computer on board
   
4. 
   the designer or manufacturer
   
5. 
   by a type code.
   
6. 
   obtaining information about the aircraft and its environment