【正确答案】 B

【答案解析】 Idiom; Grammatical Construction
   This sentence is about the past accomplishments and the future ambitions of a musician who recently won awards on a world tour. In some of the versions of the sentence, the phrase as well as is redundant with the word both before London and Tokyo. Idiomatically, the simple conjunction and completes the phrase beginning with both.
   A   The phrase as well as between London and Tokyo is not idiomatic (the idiomatic formula is both X and Y). The present progressive verb is hoping is unnecessarily wordy.
   B   Because hoping is parallel with winning, it suggests that the hoping and winning are contemporaneous, whereas in fact the musician won his awards last year but is now, in the present, upon his return, hoping to continue composing.
   C   The present-perfect participial phrase having won suggests that his winning took place before his performance tour. Furthermore, the use of hoping in this version of the sentence suggests that hoping is something the pianist did while on his performance tour last year, but the final phrase, now that he has returned to Chicago, indicates this is not so.
   D   Correct. This version of the sentence uses the correct idiomatic formula (both X and Y).
   E   The participial phrase having won... inaccurately states that the musician won his awards prior to his performance tour. Furthermore, both in London as well as Tokyo is unidiomatic, as indicated in the discussion of (A) above, and unparallel (in should either precede both, or else in should be added before Tokyo).
   The correct answer is D.