-Lily are you than Lucy? I guess so. But I’m smarter than Lucy and I’m of the two.A

问题补充：

-Lily, are you than Lucy?

-- I guess so. But I’m smarter than Lucy, and I’m of the two.

A. more serious; quieter

B. seriouser; quieter

C. more serious; the quieter

D. seriouser; the quieter

答案：

A. more serious; quieter

B. seriouser; quieter

C. more serious; the quieter

D. seriouser; the quieter

解析：考查形容词比较级。句意 莉莉，你比露西更认真吗？我猜是这样的，但我比她更聪明，并且我是两个当中最安静的那个。第一句话中因为有than故用比较级，the 比较级 of the two两个当中最。。的那个。故选C 项。