Passage Three
Questions 32 to 35 are based on the passage you have just heard.

A．Because the adventure is full of dangers and risks.
B．Because the author has tried a new kind of transportation.
C．Because the author has finally realized the dream of going to the island.
D．Because the author has been proved to be very intelligent during their adventure.

A．how scientists are trying to find an effective treatment for drug users
B．how doctors and hospitals should help drug users to quit drugs
C．how a new kind of therapy is developed by scientists
D．how a new kind of therapy works