The word “mania” （Line 4， Paragraph 2） most probably means
Directions：Write a letter to your university library, making suggestions for improving its service.
You should write about 100 words on ANSWER SHEET 2.
Do not sign your own name at the end of the letter. Use “Li Ming” instead.
Do not write the address. （10 points）
The birthday phenomenon found among soccer players is mentioned to
A．stress the importance of professional training.
B．spotlight the soccer superstars in the World Cup.
C．introduce the topic of what males expert performance.
D．explain why some soccer teams play better than others.