题目内容
178. There are four basic _____ of blood in the human body. What do you belong to, A, B, AB or O?
A. kinds B. sorts C. types D. Classes
C
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题目内容
178. There are four basic _____ of blood in the human body. What do you belong to, A, B, AB or O?
A. kinds B. sorts C. types D. Classes
C