48
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.
B. to reduce 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
答案是E.如果E改为doubling the numebr reported in the 1977 survey是否也对?
不对吧jj . 主语是好多好多人 doubling?? 要是the number of 人 doubling还差不多
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