高考11——海洋资源

　　（时间：分钟）

　　维A1 阅读理解(每题2分，满分8分)

　　高考曾用材料：2010广东卷C篇

　　选材相似度：★★★★

　　设题相似度：★★★

　　难度系数：★★★

　　It may not be quite old

　　enough

　　to

　　be

　　the world's oldest living organism—that “honor” goes to the bristlecone pine tree (aged 5,000 years )—but，at 4,000 years of age，Leiopathes glaberrima，a deep­water coral species，does set the record for being the oldest animal living under the sea.

　　Located on the floor of the Pacific Ocean，off Hawaii，the 3 meters tall，(extremely) long­lived “black coral” could have some valuable clues about past incidents of climate change; specifically，it could better scientists' understanding of how oceans draw down carbon dioxide—and of ocean acidification in general.Brendan Roark of Texas A&M University，who led a research expedition in 2006 to study the corals' climate records，presented his findings at the recent AAAS meeting.

　　How long they can live is anybody's guess，Roark told Science's Erik

　　Stokstad.He

　　and

　　his

　　colleagues

　　used radiocarbon dating to determine the coral's age.What this suggests，he said，is that the harvesting of deep­water coral for jewelry should be completely banned; because the corals grow at such an anemic rate，any level of harvesting would likely wipe out the remaining specimens—those not yet affected by ocean acidification.

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