标题: 请教大全41题 [打印本页] 作者: gemj 时间: 2003-11-16 21:22 标题: 请教大全41题 41. According to a study published by Dr. Myrna Weissman, only one percent of Americans born before 1905 had suffered major depression by the age of seventy-five; of those born since 1955, six percent had become depressed by age twenty-four. (A) only one percent of Americans born before 1905 had suffered major depression by the age of seventy-five; of those born since 1955, six percent had become depressed by age twenty-four (B) only one percent of Americans born before 1905 suffer major depression by the age of seventy-five; if they are born since 1955, six percent become depressed by age twenty-four (C) of Americans born before 1905, only one percent of them have suffered major depression by age seventy-five, but six percent of those born since 1955 do by the age of twenty-four (D) major depression is suffered by the age of seventy-five by only one percent of Americans born before 1905, and by age twenty-four by the six percent born since 1955 (E) Americans born before 1905 suffer major depression by the age of seventy-five only one percent of the time, but six percent of those born since 1955 did so by age twenty-four 正确选项A中怎么一会儿是 by the age of seventy-five 一会儿又是 by age twenty-four 这是为什么？ 作者: yzlinlin 时间: 2003-11-16 22:01
是否可理解成无歧义的省略？
唉，总是让我只有招架的份儿。作者: ivey 时间: 2003-11-17 03:49
因为指的是不同年代出生的人(1905及以前出生-1%-by75岁, 1955及以后出生-6%-by24岁),作者: fdkbaby 时间: 2003-11-17 05:10
gemj，说实话，这道题只能用排除法了。我只知道后四个肯定不对，但是第一个好像也不是很完美。作者: cthd007 时间: 2003-11-17 12:59
first, by the age of seventy-five, it refers to {before} 1905
Second, by age twenty-four, it refers to {since} 1955
It used to emphasize (or by contrast two periods of time) that how early the age of American depressed had been since 1955.
