How to improve my American English pronunciation?

When I started to learn English in middle school in the 1980's, we only paid attention to spelling and grammar. Now I am working in America and find I am really weak on pronunciation. Please advise how to efficiently improve. Thank you!

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• 回复： -Lucidus- ♂ (18064 bytes) () 05/18/2013 postreply 17:36:14

• Funny that you asked -非文学青年- ♀ (4501 bytes) () 05/18/2013 postreply 17:49:04

• Good points! -Lucidus- ♂ (0 bytes) () 05/18/2013 postreply 17:57:32

• Interest contrast: necessity, luxury or obsession. -冲浪潜水员- ♂ (29 bytes) () 05/19/2013 postreply 00:05:39

• thanks for your comment, Diver! -非文学青年- ♀ (155 bytes) () 05/19/2013 postreply 17:58:35

• Very well said 文青! It is really your goal and how much time -2msmom- ♀ (251 bytes) () 05/18/2013 postreply 22:40:55