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E.fact that the number of people who purchase plane tickets onlinearegrowing, airline executives are convinced that, just as one-third of bank customers still prefer human tellers compared with automatic teller machines, many travelers would

D.fact that the number of people purchasing plane tickets online is growing, airline executives are convinced, just as one-third of bank customers still prefer human tellers as compared to automatic teller machines, that many travelers would   感觉意思变成ceo are conviced 就像3分之1的customers still prefer.... 所以排除    that is placed incorrectly