問題詳情

B. For each sentence, please choose the underlined part that contains ungrammatical use of English.

26. Recent technological breakthroughs have exponentially reduced the cost of data storage, making that easier and less expensiveto store more data than ever before.
(A)have exponentially reduced
(B)that
(C)less expensive  
(D)to store 
(E)than ever before

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