题目内容
【题目】—________ ( )
—They are balls.
A. What is this?
B. What are these?
C. What is that?
【答案】B
【解析】
略
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题目内容
【题目】—________ ( )
—They are balls.
A. What is this?
B. What are these?
C. What is that?
【答案】B
【解析】
略