This book 12 units the unit of Music.A. contains. IncludingB. includes; containingC. co

问题补充：

This book 12 units, the unit of Music.

A. contains. Including

B. includes; containing

C. contains, includes

D. including; contains

答案：

(答案→)A. contains. Including

B. includes; containing

C. contains, includes

D. including; contains

解析：

试题分析:考查动词辨析。contain “含有，容纳，包括，抑制”；include“包括”，固定短语“包括某人在内”：including sb或者sb included。Contain常指不同类的包括，而include往往指同类的包括。由此可知A选项正确。句意：这本书包括12个单元，其中包括Music单元。