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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
关于 N percent of + 可数名词这种形式,怎么判断后面的句子是和N percent这个数字平行还是和可数名词代表的那些人或者事物平行呢?求指点 |
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