关于带电粒子在匀强磁场中所受的洛伦兹力，下列说法不正确的是（   ）

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    Once upon a time，King Swan(天鹅国王)had a beautiful daughter．On her 15th birthday,she wished that when she was old enough,she could choose her own husband．King Swan agreed with her．

    When the princess(公主)was old enough，King Swan called all me birds to his home．Birds came from everywhere，even from far away．King Swan told his lovely daughter to choose one she liked．She looked over the many birds．Finally,she chose a green long-narked peacock尼(孔雀)．She told her father，"This bird，the peacock，will be my husband．"

    Hearing that me peacock was the lucky one，all me other birds crowded around to congratulate(祝贺)him．The excited peacock said nothing but held his head high．Later he began to shout and show his beauty in a strange dance．The other birds strange to laugh．

    King Swan was angry．Standing in the middle of the birds，he said，"Sir Peacock，your voice is sweet,and you're really very pretty.But you are not modest at all．I will not allow my daughter to marry you!"

    The princess also learned she was wrong．Then King Swan married his daughter to a modest bird．The peacock flew away，having lost a beautiful wife．

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