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.
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.
B 错因为 than born under it 这样前又省略后又省略,中间却不省略 born,并不是地道的说法。要补回省略,可以这样:more babies were born to women over the age of thirty than were born to women under that age。要补就要说 were born,不能只说 born,而且要把 were born 以后的省略通通补回。