有NN给我指教一下吗?有总结的连接就更好了。
好像觉得用起来很活,有点摸不到头.....
好像今天下午看到一题og 205
205. 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.”
(A) crests and troughs that remain stationary although the air that forms them is moving rapidly, are
(B) crests and troughs that remain stationary although they are formed by rapidly moving air, are
(C) crests and troughs that remain stationary although the air that forms them is moving rapidly, is
(D) stationary crests and troughs although the air that forms them is moving rapidly, are
- (E) stationary crests and troughs although they are formed by rapidly moving air, is
好像是说with从句里不能有Although的东东,具体是什么意思啊?
谢谢啦!
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