问题
选择题
Are they cows?[ ]
A. Yes, it is.
B. No, they are.
C. No, they aren't.
D. Yes, they aren't.
答案
答案：C
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Are they cows?[ ]
A. Yes, it is.
B. No, they are.
C. No, they aren't.
D. Yes, they aren't.
答案：C