设a="Yang□"，"b=zhou"，□表示一个空格，则a-b的值为（）.A、"Yangzhou"B、"□Yangzhou"C、"Yangzhou□"D、"Yang□zhou"
设a="Yang□"，"b=zhou"，□表示一个空格，则a-b的值为（）.
- A、"Yangzhou"
- B、"□Yangzhou"
- C、"Yangzhou□"
- D、"Yang□zhou"
相关考题：
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