The whole book twelve units, two that are mainly for revision.
A. contains; including
B. includes; containing
C. contains; containing
D. includes; including
网友回答
(答案→)A. contains; including
B. includes; containing
C. contains; containing
D. includes; including
解析：contain一般“包含”得是一个整体，侧重“内有”的意思；include往往包含的是整体的一个部分或几个部分，including在这里是介词。依题意A为最佳选项。