新题250=133

133. Most Corporations pay at least twice as much to full-time employees, if the value of benefits, sick days, and paid vacation days are included in earnings, than to part-time employees, whose hourly wages are often higher than those of their full-time colleagues. E

(A) are included in earnings, than

(B) are included in earnings, as

(C) is included in earnings, than they pay

(D) is included in earnings, as is paid（E）

(E) is included in earnings, as they pay

days是不可数吗？

if the value of (benefits, sick days, and paid vacation days) are included in earnings

本句的主语是the value不可数，所以谓语应用is。