In this section, you will hear several passages.
Listen to the passages carefully and then answer the questions that
follow.
Questions 11 to 13 are based on the
following passage. At the end of the passage, you will be given 15 seconds to
answer the questions. Now, listen to the
passage.
What measure was taken against floods in London in the 1960s
A．50 underground stations were made waterproof. B．A flood wall was built. C．An alarm system was set up. D．Rescue teams were formed.