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题库 / Prep2007E1-CR-45
A major impediment to wide acceptance of electric vehicles even on the part of people who use their cars almost exclusively for commuting is the inability to use electric vehicles for occasional extended trips. In an attempt to make purchasing electric vehicles more attractive to commuters, one electric vehicle producer is planning to offer customers three days free rental of a conventional car for every 1,000 miles that they drive their electric vehicle.
Which of the following, if true, most threatens the plan's prospects for success?
Many electric vehicles that are used for commercial purposes are not needed for extended trips.
Because a majority of commuters drive at least 100 miles a week, the cost to the producer of making good the offer would add considerably to the already high price of electric vehicles.
The relatively long time it takes to recharge the battery of an electric vehicle can easily be fitted into the regular patterns of car use characteristic of commuters.
Although electric vehicles are essentially emission-free in actual use, generating the electricity necessary for charging an electric vehicle's battery can burden the environment.
Some family vehicles are used primarily not for commuting but for making short local trips, such as to do errands.
目标：使电动车对通勤者更具有吸引力；
方案：厂商给每开1000英里电车的人免费送三天燃油车租赁；
（1）目标可达性：这优惠是否能改善吸引力；（2）可操作性：这个优惠能不能实现；（3）有无副作用：这个优惠搞了以后有没有不良后果；
这里B项应该对应的（1），因为大部分通勤者每周至少开车100英里，厂商兑现承诺的成本将使得已经很高的电动车售价变得更高。那么这种优惠搞了以后，导致车价攀升，更无人问津，方案完成了但还是无法达到目标。
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