单选题:浅海处,一眼可见密密层层色彩斑斓的珊瑚礁,还有比珊瑚更___________的鱼群游弋其间。海底也有峡谷.只见珊瑚礁猛地

题目内容:
浅海处,一眼可见密密层层色彩斑斓的珊瑚礁,还有比珊瑚更___________的鱼群游弋其间。海底也有峡谷.只见珊瑚礁猛地___________于海底悬崖之下,当然也滑出了我们的视线。
填入划横线部分最恰当的一项是(  )。 A.华丽 坠落
B.美丽 沉浮
C.优雅 掉落
D.艳丽 滑落

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