题目内容：
How many pieces do they want to order?
A．5,000 B．500
C．50,000
参考答案：
答案解析：
单选题：How many pieces do they want to order?
- 题目分类：初级
- 题目类型：单选题
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B．500
C．50,000
B．500
C．50,000
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