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题库 / GMATLA-CR-41
In Brindon County, virtually all of the fasteners-such as nuts, bolts, and screws-used by workshops and manufacturing firms have for several years been supplied by the Brindon Bolt Barn, a specialist wholesaler. In recent months many of Brindon County's workshops and manufacturing firms have closed down, and no new ones have opened. Therefore, the Brindon Bolt Barn will undoubtedly show a sharp decline in sales volume and revenue for this year as compared to last year.
The argument depends on assuming which of the following?
Last year the Brindon Bolt Barn's sales volume and revenue were significantly higher than they had been the previous year.
The workshops and manufacturing firms that have remained open have a smaller volume of work to do this year than they did last year.
Soon the Brindon Bolt Barn will no longer be the only significant supplier of fasteners to Brindon County's workshops.
The Brindon Bolt Barn's operating expenses have not increased this year.
The Brindon Bolt Barn is not a company that gets the great majority of its business from customers outside Brindon County.
2020/9/25 20:35 - 屏幕剪辑
E
已知BB是B地区所有作坊的供应商，
逻辑链：
今年B地区很多作坊关闭了→BB今年销售额会暴跌
对选项B取非，就算开着的作坊销量不减，因为关掉的那些作坊BB销售也会跌
E说明BB的主要收入来源和客源是在B不是在其他地区。取非，如果不是在B，则B地区的影响对BB不大，削弱结论。
不能因为BB是B的唯一供应商就脑补BB主要收入是来自B。
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