求助prep语法（2.5考试，急！）

大家帮我看看这道题吧

A decade after initiating the nation's most comprehensive and aggressive antismoking program, per capita consumption of cigarettes in California declined from over 125 packs annually per person to about 60, a drop more than twice as great as in the nation as a whole.

(A) per capita consumption of cigarettes in California declined from over 125 packs annually per person to about 60, a drop more than twice as great as

(B) Annual per capita consumption of cigarettes in California declined from over 125 packs to about 60, more than twice as great as that

(C) California's annual per capita consumption of cigarettes declined from over 125 packs per person to about 60, more than twice as great as the drop

(D) California
   has seen per capita consumption of cigarettes decline from over 125 packs annually to about 60, a drop more than twice as great as that

(E) California has seen annual per capita consumption of cigarettes decline from over 125 packs per person to about 60, more than twice as great as that

我第一次选的是D，即正确答案，可是现在回过头来分析，却有点疑惑。 has seen &decline是不是应该中间加that ,-->has seen that .......decline，否则怎么觉得是有两个谓语动词在句子中了呢。大家一块帮我看看吧

另外，语法笔记上说这道体要看逻辑主语，但是我记得好像之前有道题，前面用了after ,但是后面却没有要求跟同样的逻辑主语（这道题我怎么也找不到了），所以我对什么时候需要注意逻辑主语的一致性，这样的问题比较关注，大家帮我解答一下吧，先谢过各位了：）

A study of food resources in the North Pacific between 1989 and 1996 revealed that creatures of the seabed were suffering from dwindling food supplies, possibly resulting from increasing sea surface temperatures during the same period.

(A) that creatures of the seabed were suffering from dwindling food supplies, possibly resulting from increasing

(B) that creatures of the seabed were suffering because food supplies were dwindling, possibly as a result of an increase in

(C) that creatures of the seabed were suffering because of food supplies, which were dwindling possibly as a result of increasing

(D) creatures of the seabed that were suffering from food supplies that were dwindling, possibly resulting from an increase in

(E) creatures of the seabed that were suffering because food supplies were dwindling, which possibly resulted from increasing

这道题 答案是B，“possibley as a result of ........) 这个是做becase food supplies were dewindling的伴随状语还是 the creatures of the seabed were suffering ,....的伴随庄宇呢，还是a study of food l....的伴随，关于伴随有点混淆了！

明白了，谢谢啦