This history book is that one but than that one.A. as difficult as; interestingB. as mo

问题补充：

This history book is that one, but than that one.

A. as difficult as; interesting

B. as more difficult as; more interesting

C. as difficult as; more interesting

D. more difficult as; as interesting

答案：

A. as difficult as; interesting

B. as more difficult as; more interesting

(答案→)C. as difficult as; more interesting

D. more difficult as; as interesting

解析：

试题分析: 句意：这本历史书和那本书一样难，但比那本书更有趣。as...as和……一样，形容词用原级；than比，形容词用比较级，故选C.