prep 2007 1-82

木寻云

82. (28967-!-item-!-188;#058&003792)

Each year companies in the United Statescould save as much as $58 billion annually by preventing

illness among employees and gain as muchas $200 billion through improving performance of

workers if they simply provided officeswith cleaner air.

(A) annually by preventing illness amongemployees and gain as much as $200 billion through

improving performance of workers if theysimply provided

(B) annually if they prevented employeeillness and gain as much as $200 billion through worker

performance improved by simply providing

(C) annually in employee illnessprevention and gain as much as $200 billion through worker

performance improved by simply providing

(D) in employee illness prevention andgain as much as $200 billion through improving performance

of workers if they simply provided

(E) by preventing illness among employeesand gain as much as $200 billion through improved

worker performance if they simplyprovided

(A) annually和each year意思表达重复; improving表示动作的过程,而这里的逻辑意思应该是

performance已经被提高,其结果造成了$200 billion的收益

(B) annually和each year意思表达重复; and gain有和if they prevented并列的嫌疑; through worker

performance improved…的重心在worker performance,因此不能准确的表达出原句的意思,应该将

improved置于worker之前,使重心变为improved worker performance; by simply providing offices

with cleaner air意思表达不清,没有表达出providing的施动者是谁

(C)  错误同B选项; inemployee illness prevention表达笨拙,尽量不要用动词的抽象名词形式

(D) prevention表达笨拙; improving不如improved意思表达准确

(E)  正确, by preventing结构比in…prevention结构意思表达更清晰;      使用improved代替improving更

符合逻辑意思

请问，为什么后面的Improved表示已经提高了performance导致gain了利润，

而前面是by preventing用进行时呢？不是应该也是“已经阻止”才导致save了$么……

为啥一个用ing一个用ed咧~？