The passage depicts the difficulty of stem cell research in South Korea.

A．swallow the tablets directly
B．chew the tablets before swallowing down with orange juice
C．crush the tablets in milk and drink it
D．chew the tablets and swallow them down

A．It slows down human reactions to fever.
B．It prevents the formation of the fever-related chemical reactions.
C．It interferes with the formation of some acids.
D．It makes human body unconscious of pains.