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题库 / OG2019-SC-692
The Commerce Department reported that the nation’s economy grew at a brisk annual pace of 3.7 percent in the second quarter, but that while businesses were expanding their production, unsold goods piled up on store shelves as consumer spending is slowed sharply.
unsold goods piled up on store shelves as consumer spending is slowed sharply
unsold goods were piling up on store shelves as consumer spending slowed sharply
unsold goods had piled up on store shelves with a sharp slowing of consumer spending
consumer spending was slowing sharply, with the piling up of unsold goods on store shelves
consumer spending has slowed sharply, with unsold goods piling up on store shelves
题目分析：商务部报道了两件事：1. 国家经济在第二季度以3.7%的速度增长；2.但是， 当企业在扩大生产的时候，未售出的货物正在货架上堆积因为消费者开销大幅度减慢
本题主要借助时态考察了语意
选项分析：
A选项：but后面 while引导的从句表达的是和主句“同时发生”，所以此选项的主句用一般过去式、as引导的从句用正在进行时是不合适的。
B选项：正确
C选项：主句用了过去完成时，表达的字面意思是：当企业在扩大生产的时候，货物已经堆积了。但逻辑上应该是：企业在扩大生产，同时，货物在堆积。
D选项：主句直接变成了“消费者开销正在减缓”，但和“生产扩大”同时发生的应该是“货物堆积”。并且，堆积的原因是“开销减缓”，这里用“with”无法表达因果关系。
E选项：同D。并且这里用的现在完成时，表达“到现在为止”。但前面的“while”提示我们应该是两个动作一起发生。
pile up 堆积，可以人堆积也可以物堆积，也可以被动式，如：She piled everything into her suitcase. 她把一应物品装进衣箱。； Work always piles up at the end of the year. 年底总是积压一大堆工作。；The clothes were piled high on the chair. 衣服在椅子上堆得高高的。
increase/slow/decrease/quicken 都用主动式，不用被动式，如：The price/rate/population/number increases. ；We need to increase productivity. 我们需要提高生产力。
be increased式形容词，如：The polymerization shrinkage value decreases when the molecular weight is increased。
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