— How do you find ____ dress in the shop window? 　 

— Oh, it's beautiful. She will be pleased if she can have it as ____ birthday present. [ ]

A. a; a 　　　　

B. a; the 　　　

C. the; a 　　　

D. the; the

要坚持社会主义制度，最根本的是要（）。