问题描述：
判断每组单词画线部分发音是否相同.
（）a.watch b.lunch c.march ()a.ask b.skill c.desk ()a.sport b.spring c.speed ()a.train b.favourite c.desk.()a.shoppong b.ship c.shoulder
（）a.watch b.lunch c.march ()a.ask b.skill c.desk ()a.sport b.spring c.speed ()a.train b.favourite c.desk.()a.shoppong b.ship c.shoulder
问题解答：
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