【题目】I don't really like the author,_______ I have to admit his books are very exciting.
A.although
B.unless
C.until
D.once

【答案】A
【解析】句意：我真的不喜欢这个作家，尽管我不得不承认他的书很令人兴奋。根据句意可知，答案选择A。