Questions 23 to 25 are based on the following news. At the end of the news item, you will be given 15 seconds to answer the questions.
Now, listen to the news.
According to the news, ice from Greenland gives information about ______.

A．the new patient should not have known his phone number
B．he seldom called at night
C．the Nelsons had been very healthy
D．the Nelsons had not called him for a long time

A．Booking a hotel room.
B．Buying a house.
C．Renting a flat.
D．Advertising an apartment.