请问由and连接的并列句第２句中的主语若为代词应该指代谁呢？

请问由and连接的并列句第２句中的主语若为代词应该指代谁呢？是要指代前一句主语呢还是单凭逻辑意思上指代？＞

例如：

182. 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.

(A)              Consumers may not think of household cleaning products to be

(B)              Consumers may not think of household cleaning products being

(C)              A consumer may not think of their household cleaning products being

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

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

答案是Ｄ　　这个没有指代前一句主语

我也不明白．之前ＥＴＳ的理论不是从句的指代优先指主句的主语吗？比如ＯＧ１５９，ＯＧ１３０．怎么这里又不是了？糊涂．．．帮你顶！！

The army cutworm moth is a critical source of fat for many

of laceName>YellowstonelaceName> laceType>National ParklaceType>’s grizzly bears; they overturn

rocks to find them and consuming as many as 40,000 apiece

in a single day.

A.     bears; they overturn rocks to find them and consuming

as many as.

B.     bears; overturning rocks to find the insects, consum-

ing up to

C.     bears, overturning rocks to find them and they consume

as many as.

D.     bears, and they overturn rocks to find them and con-

sume up to

E.      bears, which overturn rocks to find the insects, consuming

as many as.

Ｄ是不是存在they的指代不清呢？？？