[求助](29156-!-item-!-188;#058&003891) (GWD-12-Q30)

240.
            (29156-!-item-!-188;#058&003891)     (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

D E明显错误，但不是很清楚B C

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