GWD 对完答案就抓狂

For the last five years the Dutch economy has grown faster than Britain, France, or Germany, with the unemployment rate having remained well below that of the other three countries.

1. Britain, France, or Germany, with the unemployment rate having remained
2. have those of Britain, France, or Germany, and the unemployment rate remaining
3. have Britain, France, and Germany, and the unemployment rate has remained
4. the economy of Britain, France, and Germany, with the unemployment rate that has remained
5. the economies of Britain, France, and Germany, and the unemployment rate has remained

答案是E, 但是我始终觉得economy的复数用的不太对,我黄色标出地方说明应该是用单数, 请教NN, D为什么错

A.       tested that could eventually propel aircraft anywhere in the world within two hours or help

B.       tested that could eventually have the capability of propelling aircraft anywhere in the world within two hours or to help

C.       tested, eventually able to propel aircraft anywhere in the world within two hours, or helping

D.       tested, and it eventually could propel aircraft anywhere in the world within two hours or helping

E.        tested, and it could eventually have the capability to propel aircraft anywhere in the world within two hours or help

这个的答案是竟然C,彻底糊涂了????????

第一题：that指代的是什么？是失业率吧。这个肯定应该用单数，不可数

第二题：

A.       tested that could eventually propel aircraft anywhere in the world within two hours or help（错，that应该是修饰jet engine 应该直接跟在其后）

B.       tested that could eventually have the capability of propelling aircraft anywhere in the world within two hours or to help（同上）

C.       tested, eventually able to propel aircraft anywhere in the world within two hours, or helping（相对正确，可以理解为able to propel 与helping都是修饰前面的中心词jet engine）

D.       tested, and it eventually could propel aircraft anywhere in the world within two hours or helping（最后的or helping 不能与could propel平行）

E.        tested, and it could eventually have the capability to propel aircraft anywhere in the world within two hours or help（capability用法错）

unemployment rate为什么不能复数, rates,rates, rates?????????

关于第2题, 我的问题主要在able to,这个是不是有主观性,没有生命的事物能不能用,是不是应该用can

Your question is not the focus of this problem.

The main issue is the structure of the whole sentence.

The correct answer is A.

我觉得C也有问题。A的that的位置是不好，但C的问题更严重吧。

eventually able 是什么？和or helping一起做dangling?同位语？

able没有be的话，做形容词？名词？

我也不明白, 这个able是什么的干活

1。以前大N携隐对这个指代的问题有过总结，一下了找不到链接了，按我的记忆说下吧：

that指代前面出现的单数名词，those指代前面出现的复数名词。

这个题比较要对等。是Dutch economy和其他三国economy比较，可以有两种方式：
1）the Dutch economy has grown faster than that of B, F,and G.
2）the Dutch economy has grown faster than the economies of B, F,and G.
第一种方式中只能用that指代前面单数的economy，如果用thoes，前面没有复数的可以被thoes指代的对象，故不正确。

后面失业率的比较也是一样的，两种方式：要么用that of ...，要么用the unemployment rates of...