ＯＧ-137

137. In 1982 the median income for married-couple families with a wage-earning wife was $9,000 more than a family where the husband only was employed.

(A)    a family where the husband only

(B)     of a family where only the husband

(C)    that for families in which only the husband

(D)    a family in which only the husband

(E)     those of families in which the husband only

我想请问一下C里面的that可不可以去掉？因为有for在，than做关系代词应该比较清晰。

谢谢

谢谢楼上！可是我觉得把C去掉that代入就变成了

In 1982 the median income for married-couple families with a wage-earning wife was $9,000 more than （the median income) for families in which only the husband was employed.

than是否可以在这里做关系代词呢？？

可以