Mei Li:
Inspector Japp appears in novels featuring which detective??
Shuai Zheng:
hercule poirot
Mei Li:
The Salk vaccine is one of two vaccines used throughout the world to combat what disease??
Shuai Zheng:
poliomyelitis
Mei Li:
Tower Bridge was for many years the last of London's bridges before the sea what is now??
Shuai Zheng:
queen elizabeth ii