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题库 / Prep2007E1-SC-82
Each year companies in the United States could save as much as $58 billion annually by preventing illness among employees and gain as much as $200 billion through improving performance of workers if they simply provided offices with cleaner air.
annually by preventing illness among employees and gain as much as $200 billion through improving performance of workers if they simply provided
annually if they prevented employee illness and gain as much as $200 billion through worker performance improved by simply providing
annually in employee illness prevention and gain as much as $200 billion through worker performance improved by simply providing
in employee illness prevention and gain as much as $200 billion through improving performance of workers if they simply provided
by preventing illness among employees and gain as much as $200 billion through improved worker performance if they simply provided
不知道这么理解对不对，D中they可能有歧义，可以理解成是指代workers
E中的improved可以解释成：if they simply provided clean air是假设已经发生的，那么performance就会 已经improve（即improved） improved是一个形容词 修饰performance
最主要的问题还是D改变了intended meaning，原意是通过……节省了多少钱，D的意思是在……方面节省了多少钱。
啊！懂了 in和by的差别。谢谢～
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