单项选择题


Questions 4 to 7 are based on the following conversation. At the end of the conversation, you will be given 20 seconds to answer the questions.
Now listen to the conversation.
On what aspect of weather forecasting does the conversation focus

A.How much it has improved in recent years.
B.How reliable long-range forecasts are.
C.How long it takes to become a meteorologist.
D.How the current forecast will affect the speakers.