单项选择题

Questions 17—20 are based on the passage you have just heard. You now have 20 seconds to read Questions 17—20. What Henry Dunant do during the battle between the French and Austrian armies

A.He sent surgeons to serve in the army.
B.He provided soldiers with medical supplies.
C.lie recruited volunteers to care for the wounded.
D.He helped to flee the prisoners of war.