共用题干 1. Icebergs are among nature's most spectacular（壮观的）creations , and yet most people have never ...

参考答案: E

参考解析: 第一段说Icebergs是大自然最壮观的创造，但是…most people have never seen one。A vague air of mystery envelops them.…in most case no one hears or sees.They exist only7 a short time and then siowiy waste away just as unnoticed．以上都说明了冰山的神秘。
第二段讲冰山的美。C项是干扰项。第二段提到了冰山的不同颜色，但描写颜色的目的是为了体现它的美。另外，本段第一句“Objects of sheerest beauty they have been called.”和最后一句“They are graceful , stately , inspiring in calm , sunlight seas.”也都在讲冰山的美丽。
第三段讲冰山是很危险的。第一句就提到：" But they are also called fright-ening and dangerous…”。
第四段讲冰山是如何形成的。
第一段最后一句：" They exist only a short time and then slowly waste away just as unnoticed." waste away和melt away都有“慢慢消融”的意思。
答案相关句在第三段第二句：" Even in clear weather one is wise to stay a safe distance away from them."
答案相关句在第三段第三句：" Most of their bulk is hidden below the water, so their underwater parts may extend out far beyond the visible top."
问题句空格处需要填名词性短语。D项是选项中唯一的名词性短语。另外，从文章的最后一句“With time and pressure from above , the many small ice grains joined and changed to larger crystals , and eventually the deeper crystals merged into a solid mass of ice.”也能找到答案。