P141-18
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

A为什么错呢？不是用and更对称么？还是说and also罗嗦啊？

 

这个题目A选项的错误其实是相对明显的
这个句子中 Intended ... travel是状语
主句主语是 the new airfare, 后面的which allows both and adult and a child to fly for the price of one ticket是一个定语，后面的shortens其实应该做句子的谓语动词
从这个角度上看，and在shortens前面 语法上要引导一个并列结构，但是在句子中却没有任何一个谓语动词能够和shorten并列
当然你也可以认为shorten 和前面的allow并列，但如果这样的话句子就缺少谓语动词 不完整了

这就是A选项的错误

希望这样的解释能够帮助你
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