Questions 14-17 are based on the following monologue. You now have 20 seconds to read Questions 14-17. When was the penicillin mass-produced

A．along
B．on
C．around
D．above

A．people in large cities tend to excuse criminals
B．people in small towns still stick to old discipline and standards
C．today’s society lacks sympathy for people in difficulty
D．people in disadvantaged circumstances are engaged in criminal activities