Queens, New York, is one of the most ethnically diverse corners of the world, with nearly 50 percent of its residents foreign born. It is a land of opportunity - for all of us, seeking a better dinner. Beginning at Manhattan's Times Square, the number 7 subway line heads crosstown on 42nd Street to Fifth Avenue and Grand Central Station, then zips under the East River to Queens. From Long Island City to Flushing Main Street you can eat your way around the world at least once. Languages are abundant and the foods are, too. The borough is large and the options are many, so let these selections, each a short walk from a station, be your guide on a culinary trip around the world on the 7 train.