比较

jefferycai

Accordingto surveys by the National Institute on Drug Abuse, about 20 percent of young adults used cocaine in 1979, doublingthose 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 1977survey
(E) twice the number reported in the 1977 survey

请解释一下c选项。我的理解：those指代前面的adults

咖啡印象

个人觉得前面percent of young adults表示的是一个数字the number，不能用 those指代

ai559031

those是代替前面複數名詞，前面只有adults是複數，所以those是指代adults沒錯
但是因為句意不合理
所以twice those/ doubling those都是錯誤選項

jefferycai

咖啡印象 发表于 2016-8-2 10:29
个人觉得前面percent of young adults表示的是一个数字the number，不能用 those指代

those 指代adults时不把前面的20%也一同指代吗