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Intended primarily to stimulate family summer travel, the new airfare, which allows both an adult and a child to fly for the price of one ticket, and also shortens the advance-purchase requirement for family travel to a minimum of seven days rather than fourteen. (A) and also shortens the advance-purchase requirement for family travel to a minimum of seven days rather than (B) and also lessens the advance-purchase requirement for family travel to a seven-day minimum from (C) also shortens the advance-purchase requirement for family travel to a minimum of seven days rather than that of (D) also lessens the advance-purchase requirement for family travel to a seven-day minimum from (E) also shortens the advance-purchase requirement for family travel to a minimum of seven days rather than 答案E 这题，用shorten修饰requirement我实在觉得牵强，所以把shortens排除了，请问，此题为何选e, d 的错误难道是前人所说from to的顺序不能颠倒吗？