According to surveys by the National Institute on Drug Abuse, about 20 percent of young adults used cocaine in 1979, (( doubling those reported in the 1977 survey)).
(A) doubling those reported in the 1977 survey
(B) to double the number the 1977 survey reported
(C) twice those the 1977 survey reported
(D) twice as much as those reported in the 1977 survey
(E) twice the number reported in the 1977 survey
這題的答案是e 但我想請問一下 twice是副詞 the number是名詞
副詞可以修飾名詞嗎??? 這選項會不會怪怪的