17. In the 1980’s the rate of increase of the minority population of the United States was nearly twice as fast as the 1970’s. (A) twice as fast as (B) twice as fast as it was in (C) twice what it was in (D) two times faster than that of (E) two times greater than
17. In the 1980’s the rate of increase of the minority population of the United States was nearly twice as fast as the 1970’s. (A) twice as fast as (B) twice as fast as it was in (C) twice what it was in (D) two times faster than that of (E) two times greater than
两个不同时期的数据不能比较,那是因为比较的主体不同,比如说:1997 economic growth rate vs. 2002 economic growth rate,当然两者间不可以用同一个it来指代。
这里为什么可以呢?请看原题,它比较的是同一个事物,在不同的年代。比较中心词没有不同,都是the rate of increase of the minority population of the United States。不过一个是在in the 1980's, 另一个in the 1970's。所以是时间的比较,可以it来指代同一个比较中心词。