It was difficult to believe that the sophisticated piece of technology had ------- through the centuries from such ------- and rudimentary apparatus.
Adeveloped . . an intricate
Bresulted . . a complicated
Cevolved . . a quaint
Ddegenerated . . an obsolescent
Ediffered . . an exotic
Adeveloped . . an intricate
Bresulted . . a complicated
Cevolved . . a quaint
Ddegenerated . . an obsolescent
Ediffered . . an exotic