请教 OG 72 题

linxch2003

☆☆☆72. The number of undergraduate degrees in engineering awarded by colleges and universities in the United States increased by more than twice from 1978 to 1985.fficeffice" />

(A)                                                     increased by more than twice

(B)                                                     increased more than two times

(C)                                                     more than doubled

(D)                                                     was more than doubled

(E) had more than doubled

    

    

     请问(D)错在哪里?

谢谢!!!!!!

smm969672

. D's passive verb was ... doubled suggests without warrant that some unnamed agentfficeffice" />


increased the number of engineering degrees.


被动语态用错，假设了某个机构增加了the number of engineering degrees.与全句意思不合