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.

Which of the following didn’t help make jeans popular in the 1950s and 1960s

A．Modem birds are the closest living relatives of the two-legged dinosaurs.
B．Dinosaurs have medullary bone.
C．Medullary bone is only known in ovulating birds.
D．Medullary bone is a source of calcium for birds to make shells for their eggs.

A．Go to see the landlord.
B．Go to the court.
C．Move out.
D．Lose part of their deposit but get the other amount.