GWD-27-Q18？

The Near Earth Asteroid Rendezvous (NEAR) spacecraft will orbit the asteroid Eros for a year, slowly moving closer to the surface of the object to make ever more precise measurements that scientists hope will enable them to understand how the solar system formed some four billion years ago.

1. to make ever more precise measurements that scientists hope will enable them to

2. to make ever more and more precise measurements, which scientists are hoping to enable them

3. for making ever more precise measurements, and scientists hope that they will be able to

4. with the purpose of making more precise measurements than ever, and which scientists hope will enable them to

5. in order to make more precise measurements than it ever did, and scientists are hoping they will be able to

此题答案是C

那么A选项错在哪呢?!

我支持A。觉得C割断了原文有的逻辑关系，变成前后两个事情是孤立的，没有表达出句子原本想表达的意思。

我也选得A

看了半天A和C,不知道原因...

哎,还是不自信!

个人看法

A不好

解释如下：slowly moving closer to the surface of the object to make ever more precise measurements that scientists hope will enable them to
        understand how the solar system formed some four billion years ago.

这里的that似乎是修饰的是measurements

则会有一下两种情况：

1.that从句的结构：【that scientists hope will enable them to understand how the solar system formed some four billion years ago.】来修饰measurements，这样的句子显然是错的，

（a）. 意思不对“科学家希望会使得他们冕宁百40亿年前太阳系是怎么形成的这样的一个精确的测量”

（b）. hope和will在意思上有重复

（c）. hope will enable说不通，直接就scientists hope to understand 。。。即可

2.that从句的结构：：【that scientists hope 】will enable them to understand how the solar system formed some four billion years ago.即主语是measurements；是科学家hope的measurements，但是后面的will显得莫名，应该是to enable them to。。。。。。。。才正确

C令人感觉前后不连冠，但是没什么错

个人感觉要是C的前半句用不定式会更加好一点，表目的更加明确

如果A的them指代可能不清楚，C的they也存在这样的问题，而且将原文的to do目的变成for doing,大全OG上没有看到过这样改正确了的，for sth才表示目的，还请牛牛指导。