General Knowledge Quiz for Friday, 8 August 2014
A new general knowledge quiz is available every day. Try today's quiz or work through our archive of daily and themed quizzes.
Question 1: It is considered to have been conceived in the West as an idea in 1508 and in its current highly-oxygen-permeable form 490 years later, and is..?
A
B
Contact lens
Artificial heart valve
C
Oesophagal stent
D
Transdermal patch