1. Several recent studies suggest that a child born into a family

whose members have allergies will probably themselves develop

allergies following the onset of a minor viral infection.

(A) a child born into a family whose members have allergies will

probably themselves develop allergies

(B) children born into families whose members have allergies will

probably themselves develop allergies

(C) a child born into a family the members of which have allergies

will probably develop an allergy

(D) in those families where members have allergies, children will

probably develop allergies themselves（B）

(E) children born into a family in which there are allergies will

themselves probably develop an allergy

我选c ,请问，为什么family用whose指代对，而用of which指代不对？ 有规

定吗？

effecitiveness上面没有问题，但是明显B的whose更简洁，答案永远是比较出来的。