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.
-
Adoubling those reported in the 1977 survey
分析该选项
-
Bto double the number the 1977 survey reported
分析该选项
-
Ctwice those the 1977 survey reported
分析该选项
-
Dtwice as much as those reported in the 1977 survey
分析该选项
-
Etwice the number reported in the 1977 survey
分析该选项
显示答案
正确答案: E