请教三道新东方书上的语法题，谢谢

zlydream

想请教几道我不明白的语法题，谢谢！

1.For many people, household labor remains demanding even if able to afford household appliances their grandparents would find a miracle.

A.even if able to afford household appliances their grandparents would find a miracle

B.despite being able to afford household appliances their grandparents would find a miracle

C.even if they can afford household appliances their grandparents would have found miraculous

D.although they could afford household appliances their grandparents would find miraculous

E.even if they are able to afford household appliances which would have been a miracle to their grandparents

答案是c。为什么要用would have found 而不用would find 呢？






2.In his eagerness to find a city worthy of Priam, the German archaeologist Schliemann cut through Troy and uncovered a civilization a thousand years older as was the city Homer’s heroes knew.
　　(A) older as was the city Homer’s heroes knew
　　(B) more ancient than the city known to Homer’s heroes
　　(C) older than was the city known to Homer’s heroes
　　(D) more ancient of a city than Homer’s heroes knew
　　(E) older of a city than was the one known to Homer’s heroes
　　the key:B

Civilization指“文明”，我认为不能和 the city 对等比较。







3.The labor agreement permits staff reductions through attrition with increased pension benefits and a special early-retirement program for speeding it up.

　　（A） attrition with increased pension benefits and a special early-retirement program for speeding it up

　　（B） attrition and provides increased pension benefits and a special early-retirement program to speed the attrition process

　　（C） attrition， which will be speeded up by providing increased pension benefits and a special early-retirement program

　　（D） attrition， which， by their providing increased pension benefits and a special early-retirement

　　program， will speed the process

　　（E） attrition， which provides increased pension benefits and a special early-retirement program for speeding the attrition process

答案是B，为什么C不对？

我还有几个星期要考GMAT了，可是现在做语法还是错得比较多，请问老师有什么方法可以冲刺一下吗？谢谢老师。
顺祝，顺利！