[求助] OG T205 215

1. the peaks of a mountain range, acting like rocks in a streambed, produce ripples in the air flowing over them; the resulting flow pattern, with crests and troughs that remain stationary although the air that forms them is moving rapidly, are known as "standing waves."

C) crests and troughs that remain stationary although the air that forms them is moving rapidly,is

E) stationary crests and troughs although they are formed by rapidly moving air, is

答案是C，解释说E incorrectly introduces a dependent adverbial although clause into a prepositional phrase (with crests...) 我不太明白它说的意思。请大家用中文解释一下

2 parliament did not accord full refugee benefits to twelve of the recent immigrants because it believed that to do it rewards them for entering the country illegally.

A) to do it rewards

B) doing it rewards

C) to do this would reward

D) doing so would reward

E) to do it would reward

我看不懂解释中的说明，请前辈解释一下这道题，帮我分析下考点及句子结构

1. 将 although 从句引入 with 介词短语中是不对的。

2. Parliament believed that doing so would reward immigrants for entering the country illegally.

   doing so = accord full efugee benefits to 12 of the recent immigrants

谢了 em53]

不过还有没有更直白的解释啊?

我觉的,OG的意思是

although 引导的是个状语从句,必须在有完整的主句结构中, 状语从句才能存在

但是with介宾短语 不算是完整的主句

不过定语从句是可以的把

请NN释疑