请教白用语法里的一题

As sales of cars and light trucks made in North America were declining 13.6 percent in late February, many analysts conclude that evidence of a recovering automotive market remains slight.
(A) As sales of cars and light trucks made in North America were declining 13.6 percent in late February, many analysts conclude
(B) Since sales of cars and light trucks made in North America declined 13.6 percent in late February, and many analysts conclude
(C) With sales of cars and light trucks made in North America declining 13.6 percent in late February, with many analysts concluding
(D) Because sales of cars and light trucks made in North America declined 13.6 percent in late February, many analysts concluded
(E) Because of sales of cars and light trucks made in North America declining 13.6 percent in late February, therefore, many analysts concluded

给的答案是d，而不是a

是因为：1，as在书面语法里不能用作“因为”？ 2，conclude时态不对？

要是2的话，后面的从句时态是现在时，这跟d主句过去时相悖。难道后面的evidence of a recovering automotive market remains slight.是件真理？

我觉得状语从句的时态和主句时态关系，要被优先考虑 vs ETS似乎想告诉我们，主句时态和宾语从句时态无关

你觉得哪个？

我觉得状语从句的时态和主句时态关系，要被优先考虑 -》从句时态应该跟主句一致，题干是现在时，所以主句应该是现在时，选a

ETS似乎想告诉我们，主句时态和宾语从句时态无关-》d也对

我觉得状语从句的时态和主句时态关系，要被优先考虑 -》从句时态应该跟主句一致，题干是现在时，所以主句应该是现在时，选a

我说的是“状语从句”，你非要理解成宾语从句。

A的状语从句是were declining，过去时。状语从句强调主句的动词的影响，一个过去时的状语，怎么影响现在的动作。Conclude错。所以不选A

ETS似乎想告诉我们，主句时态和宾语从句时态无关-》d也对

因为优先考虑状语从句和主句的关系，所以得到d。

然后D主句的时态和宾语从句的时态不一致，但是这种不一致，不被考虑。所以D没有问题。

看错了。。sorry

(A) As sales of cars and light trucks made in North America were declining 13.6 percent in late February, many analysts conclude

(D) Because sales of cars and light trucks made in North America declined 13.6 percent in late February, many analysts concluded

(A) sales were declining用过去进行时没有（B）declined好，结论是根据过去发生的事情，不是根据过去正在发生的事情得出的。