(单选题) A number is an abstraction__________no physical existence.(本题1.0分) A.has B.to have C.that has D.who has

(单选题) A number is an abstraction__________no physical existence.(本题1.0分)
A.has
B.to have
C.that has
D.who has

出自：桂林理工大学大学英语4

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