请教OG16中的第90题

seeyseem

Prices at the producer level are only 1.3 percent higher now than a year ago and are
going down, even though floods in the Midwest and drought in the South are
hurting crops and therefore raised corn and soybean prices.
(A) than a year ago and are going down, even though floods in the Midwest
and drought in the South are hurting crops and therefore raised
(B) than those of a year ago and are going down, even though floods in the
Midwest and drought in the South are hurting crops and therefore raising
(C) than a year ago and are going down, despite floods in the Midwest and
drought in the South, and are hurting crops and therefore raising
(D) as those of a year ago and are going down, even though floods in the
Midwest and drought in the South hurt crops and therefore raise
(E) as they were a year ago and are going down, despite floods in the
Midwest and drought in the South, and are hurting crops and therefore
raising
请问各位牛牛们，为什么B选项中的and后是going down 为什么用going？

devilmars

are going down和第一个are平行，going没看出来有什么问题啊

Fiona09

其实and后面是be going to表将来的用法，只是因为go, come, arrive, leave等表示位置移动的动词很少和be going to结构连用，而大多是用现在进行时表示将要发生的动作。举l两个例子：1）Linda is coming tonight. Linda今晚要来；2）Tom and his friends are going to the beach next weekend. Tom和他的朋友下周末要去海边玩。所以用的and are going down。

emmahiggins09

这是句子的主要结构，我把修饰都去掉了

prices...are higher than those a year ago and (prices) are going down...even through floods...and drought...are hurting crops.