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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

E)

提醒樓主，可以修改一下標題，使更貼近問題內容，不僅方便查找，也方便討論，可參考

语法区第一贴 －《语法区版规》   [ 1 2 ]

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