PREP07逻辑第一套中第45题求大牛指点

A major impediment to wide acceptance of electricvehicles even on the part of people who use their cars almost exclusively forcommuting is the inability to use electric vehicles for occasional extendedtrips.  In an attempt to make purchasingelectric vehicles more attractive to commuters, one electric vehicle produceris planning to offer customers three days free rental of a conventional car forevery 1,000 miles that they drive their electric vehicle.

Which of the following, if true, most threatensthe plan's prospects for success?

(A) Many electric vehicles that are used forcommercial purposes are not needed for extended trips.

(B) Because a majority of commuters drive at least100 miles a week, the cost to the producer of making good the offer would addconsiderably to the already high price of electric vehicles.

(C) The relatively long time it takes to rechargethe battery of an electric vehicle can easily be fitted into the regularpatterns of car use characteristic of commuters.

(D) Although electric vehicles are essentiallyemission-free in actual use, generating the electricity necessary for chargingan electric vehicle's battery can burden the environment.

(E) Some family vehicles are used primarily notfor commuting but for making short local trips, such as to do errands.