在船上，打扫卫生是经常性工作。（）
- A、Cleaning is a frequent job at sea.
- B、Painting is a frequent job on board a ship.
- C、Cleaning is a frequent job on board a ship.
- D、Repairing is a frequent job on board a ship.
正确答案:C
答案解析:有
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在船上，打扫卫生是经常性工作。（）
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