弱问：OGverbal-19，20

19．  While depressed property values can hurt some large investors, they are potentially devastating for homeowners, whose equity-in many cases representing a life's savings--can plunge or even disappear．

(A)  they are potentially devastating for homeowners，whose

20. Consumers may not think of household cleaning products to be hazardous substances，but many of them can be harmful to health，especially if they are used improperly．

(D)  A consumer may not think of household cleaning products as

(E)  Household cleaning products may not be thought of by consumers，as

在19题中，they能够指代前面分句的主语depressed property values

为什么20题里面的them就不能指代前面分句的主语consumer叻？

如果能够指代的话，个人觉得用被动，即E选项，指代更为清晰吧？

难道是因为，19题是从句就能这样指代，而20是并列的分句子就不行么？

望大牛指导一二。。。

正如你说说的。19题是主从句，代词有限指代从句主语。而20题是两个并列句可以指代前面相关名词。