This book 10 units , two revision units.A. includes; containingB. contains; includingC. c

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A. includes; containing
(答案→)B. contains; including
C. contains; included
D. includes; containing
解析：考查动词辨析。contain“包含；包括；含有”指包括所有部分；include“包括”指包括部分。句意：这本书有十个单元，包括两个复习单元。第二个空this book和include之间是主动关系，用including，所以答案选B。