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题库 / OG2017V-SC-282
According to United States census data, while there was about one-third of mothers with young children working outside the home in 1975, in 2000, almost two-thirds of those mothers were employed outside the home.
while there was about one-third of mothers with young children working outside the home in 1975, in 2000, almost two-thirds of those mothers were employed outside the home
there were about one-third of mothers with young children who worked outside the home in 1975; in 2000, almost two-thirds of those mothers were employed outside the home
in 1975 about one-third of mothers with young children worked outside the home; in 2000, almost two-thirds of such mothers were employed outside the home
even though in 1975 there were about one-third of mothers with young children who worked outside the home, almost two-thirds of such mothers were employed outside the home in 2000
with about one-third of mothers with young children working outside the home in 1975, almost two-thirds of such mothers were employed outside the home in 2000
1. 本句意在对比1975年的数据和2000年的数据，并没有要在它们之间建立逻辑关系。
原句中，while 有点儿类似汉语的“而”。“而”可以用来表达两者之间的对比，不带转折语气。
D, even though 表达了强烈的转折关系，但是这两者之间其实并不存在这种关系。
E, with 结构做状语，表示“同时”，显然这两个数据之间并不具备这样的逻辑联系。
2. There be 句型的使用要谨慎，
A 选项中，there be 的出现完全多余，因为 there was one-third of mothers working outside the home, 和 one-third o mother working outside the home 表达的意思完全是一样的。
而B，D选项中，there be 句型的出现不仅使句子变得冗长，而且导致将后面的 mother work 变成了 mother who worked 定语从句，但是因为定语从句和 mother 之间有了with young children 做修饰语，导致定语从句修饰歧义。
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