E 
For any two numbers $$x$$ and $$y$$, the special operation $$^{}\otimes$$ is defined as follow $$x^{}\otimes y=x+y-\frac {2012}{335}$$.  Calculate $$\frac {2^{}\otimes 4^{}\otimes 6^{}\otimes \cdots ^{}\otimes 2010^{}\otimes 2012}{2012}$$. 
$$1006$$ 
$$1005$$ 
$$503$$ 
$$502$$ 
None of the above 