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题库 / Prep2008E1-SC-240
According to public health officials, in 1998 Massachusetts became the first state in which more babies were born to women over the age of thirty than under it.
than
than born
than they were
than there had been
than had been born
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1.比较，中间省略了重复的主语和谓语
more babies were born to women over the age of thirty
than (babies were born to women) under it（指代the age of thirty）
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