B. "Cong Ju" versus "Lonely Boat", one crowd and one widow; "One system" and "two open" are numerals plus verbs; "Hometown Heart" is neat to "Tears in the Future";
C. Jian Jiang and Lonely Boat are not antagonistic; "Tide" and "one system" are not antagonistic; "Tian Jianyong" is an adverbial plus a verb, which is not opposed to a noun with a "hometown heart".
D. "Wan Li" and "One" are not antagonistic, and the whole poem does not conform to the artistic conception of the original sentence;
Therefore, choose: B.