20. The argument that the dominant form of family structure today is not the nuclear family, but rather it is a family which is modified and extended, is based on a number of facts: the existence of three-generational families, the amount of vertical and horizontal communication between family subunits, and the extent to which family members offer assistance to one another.
(A) family, but rather it is a family which is modified and extended, is based on a number of facts: the existence of three-generational families
(B) family, but is instead a family that is modified and extended, is based on a number of facts: three-generational families exist
(C) family, which has been modified and extended, is based on a number of facts: the existence of three-generational families
(D) family but a modified extended family is based on a number of facts: the existence of three-generational families
(E) family, but also a modified and extended family, is based on a number of facts: three-generational families exist
D中is是否多余?modified是否修饰extended family ,那么是否应用副词形式?
谢谢!
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