请麻烦看一到真题，百思不得其解【小陈】

Though viewed from a distance, Saturn's main rings may appear to be smooth and continuous, they are in fact composed of thousands of separate icy ringlets when viewed up close.

A --- Though viewed from a distance, Saturn's main rings may appear to be smooth and continuous, they are in fact composed of thousands of separate icy ringlets when viewed up close.

B --- Though Saturn's main rings may appear smooth and continuous when viewed from a distance, they are in fact composed of thousands of separate icy ringlets when viewed up close.
            

C --- Saturn's main rings, when viewed from a distance, may appear to be smooth and continuous, though when viewed up close they are in fact composed of thousands of separate icy ringlets.

D ---When viewed from a distance, Saturn's main rings may appear smooth and continuous, but closer viewing reveals them to be composed of thousands of separate icy ringlets.
            

E --- Though composed of thousands of separate icy ringlets if viewed up close, the main rings of Saturn may appear smooth and continuous when they are viewed from a distance

这一题从一上来就根据平行大于一切的规则进行对选项的筛选，但还是选不出正确答案。请问B错什么地方了？D是怎么进行句子结构平行的呢？

谢谢了

Though research remains to be done into the reasons why the Civil War was triggered, scholars do not regard slavery to be the sole cause.

A --- Though research remains to be done into the reasons why the Civil War was triggered, scholars do not regard slavery to be the sole cause.

B --- Though research remains to be done into what triggered the Civil War, scholars do not regard slavery as the sole cause.
            

C --- Though the reasons that triggered the Civil War remain to be researched, slavery is not regarded by scholars to be the sole cause.

D ---Despite research remaining into the reasons why the Civil War was triggered, scholars do not regard slavery as the sole cause.

E --- Scholars do not regard slavery as the sole cause of the Civil War, though the reasons for it being triggered remain to be researched.

似乎这一类题目我的错误率很高

这一题我选了C

第一题：

A C appear to be 罗嗦

C E though的让步段位置错，改变原文意思

B  separate icy ringlets when viewed up close. 根据分词和从句就近修饰原则，被认为是修饰 ringlets，但从原文，应该是main rings被viewed的。所以错

第二题：

regard 后面接as;

主动优于被动；

就可以判断出B

以上是我个人的理解。希望和各位讨论！

谢谢你的回答

第二题关于regard as你是对的，这个没有问题

我现在比较迷惑的是，如何从句子构成以及成分分析上判断这两题呢？ 还是说though这种题目本来就不能用这种分析方法？现在做了OG，感觉平行和逻辑真的是大方向，但往往这样反而导致我选出错误答案；可能过度追求句子的平行结构了（我这边说的平行可能是指广义的那种大对称)

看到不少nn帖子说，sc高分都是要看意思

看来现在的ets真是越来越坏了

真怀疑是不是cd里面有密探，把大家总结的东西都给了ets，闹得现在都要看意思了