Questions 14 to 17 are based on the following passage.
At the end of the passage, you will be given 20 seconds to answer the
questions. Now listen to the passage. What do most desert animals do at night
A．They are active in their search for food and water. B．They go underground to find food. C．They build new shady place to avoid the coming day’s sun rays. D．They take a rest in the cool and safer darkness.