单项选择题

Questions 18 to 20 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.
According to the speaker, what problem do libraries face


A. Many of their books are in poor condition.
B. They have too many books from the early 1800’s.
C. They don’t have enough space to store government documents.
D. They have to import roost of the paper they’ use.