这题看不懂，晕乎

The reason much refrigerated food spoils is that it ends up out of sight at the back of the shelf. So why not have round shelves that rotate? Because such rotating shelves would have just the same sort of drawback, since things would fall off the shelves' edges into the rear corners.

which of the following is presupposed in the argument against introducing rotating shelves?

a.frgrigerators would not be made so that their interior space is cylindrical

b.refrigerators would not be made to have a window in front for easy viewing of their contents without opening the door.

c. the problem of spoilage of refrigerated food is not amenable to any solution based on design changes.

d. refrigerators are so well designed that there are bound to be drawbacks to any design change.

e.rotating shelves would be designed to rotate only while the regrigerator door was open.

新东方答案：A

（新东方习题的印刷质量太差了，不敢全信它给的答案了，还是请教各位高人）

“很多冰箱冰冻的食品腐烂的原因是，食品在食物架的后边见不到光。因此为什么不能设计成可以转动的架子？因为这样的架子可以....（翻译不出来了，不过大意应该讲如此设计的好处---不影响做题了）”