A．The anger of a relative, friend or enemy.
B．The stone hidden inside the patient's throat, arm, leg, stomach, etc.
C．The attack from neighboring enemies.
D．The diseases that enter the body of a person.
A．They are scientific.
B．They are too complicated.
C．They should be banned.
D．They are not truthful, but effective.
A．Because he can't accept the surgery performed without anesthesia.
B．Because he was repelled by the sight the anesthesia.
C．Because he was operated a surgery without anesthesia.
D．Because he preferred to become a clergyman.
A．His famous book was named On the Origin of Species by Means of NaturalSelection.
B．His famous book was published in 1859.
C．His famous book didn't arouse a storm of controversy at that time.
D．His famous book was on basis of the research resulting from his voyage.