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.
GWD-12-Q30: 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.
A. than B. than born C. than they were D. than there had been E. than had been born ANS: A 看过讨论 明白了 可是这道题为什么不能选C呢?