问题
选择题
Can a cow fly?[ ]
A. Yes, it can.
B. No, it can't.
C. Yes, I can.
D. No, I can't.
答案
答案：B
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Can a cow fly?[ ]
A. Yes, it can.
B. No, it can't.
C. Yes, I can.
D. No, I can't.
答案：B
sin
V