The fact that people in many countries sent money to help build the Pasteur Institute shows that（）

A．Louis was famous for his discovery.
B．Though his left arm and leg were disabled, he worked even harder than before.
C．In his childhood he made up his mind to become a doctor.
D．His disabled (残疾的)left arm and leg had nothing to do with the mad dogs.

A．how Louis Pasteur's friend died
B．Louis Pasteur's experience and achievements in curing rabies
C．how Louis Pastear's arm and leg were disabled
D．Louis Pastear cured a boy who had been badly bitten by a mad dog

A．became disappointed
B．got angry
C．lost interest
D．could not continue the conversation because he did not know what else he could say