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.
than
than born
than they were
than there had been
than had been born
这道题答案是A, 为什么不能是C呢?
我觉得划线部分应该是than babies were born to women,不知道对不对,请NN指点,万分感谢