The largest trade-book publisher in the United States has announced the creation of a new digital imprint division, under which it will publish about 20 purely digital works to be sold online as either electronic books or downloadable copies that can be printed upon purchase.
works to be sold online as either electronic books or
works to sell them online, either as electronic books or
works and it will sell them online as either electronic books or as
works, and selling them online as either electronic books or as
works, and it will sell them online either as electronic books or
B,C,D通过parallelism排除,E选项连词会导致句子割裂
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