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

A．All the passengers were killed.
B．The plane crashed in the night.
C．No more survivors have been found.
D．It’s too late to search for survivors.

A．A flood wall was built.
B．Rescue teams were formed.
C．An alarm system was set up.
D．50 underground stations were made waterproof.