问题
选择题
Have you ever read the book_________ The Old Man and the Sea? [ ]
A. call
B. to call
C. be called
D. called
答案
答案：D
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Have you ever read the book_________ The Old Man and the Sea? [ ]
A. call
B. to call
C. be called
D. called
答案：D
，则a与b比值是（）。