Questions 11 to 14 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.
John William’s house is made of ______.

A．A discussion about Newton’s theory.
B．A conference held in the honor of Newton.
C．A display of Newton’s works in the library.
D．An exhibition of documents and other items about Newton.

A．More expensive than the usual price.
B．Only one stopover allowed.
C．Having only one Australian stop.
D．Many restrictions on it.