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The peaks of a mountain range(山脉), 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, is known as“standing waves.” (该句为正确句子)
(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
牛牛你好,我想问问 第95题的 D. E选项中 你的解释。你提到 although从句没有主句。那 在正确选项中的C选项 although从句的主句是哪一部分呢 ? 谢谢! |
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