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题库 / Prep2007E1-SC-164
One automobile manufacturer has announced plans to increase the average fuel efficiency of its sport utility vehicles by 25 percent over the next five years, amounting to roughly five miles per gallon, and representing the first significant change in the fuel efficiency of any class of passenger vehicle in almost two decades.
amounting to roughly five miles per gallon, and representing
amounting to roughly five miles per gallon, and it would represent
an increase that would amount to roughly five miles per gallon and it would represent
an increase that would amount to roughly five miles per gallon and would represent
which is an increase amounting to roughly five miles per gallon, representing
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B，语意：it句是独立的句子，与主句生产者宣布计划平行，宣布计划，代表重大改变，二者是有逻辑关系的（计划的内容带来重大改变），不能用and并列；
同时it指代increase这件事情，指代错误
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