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More artificial reefs(礁石)are being lowered into the ocean now than ever before. But as artificial-reef initiatives grow to inclu
More artificial reefs(礁石)are being lowered into the ocean now than ever before. But as artificial-reef initiatives grow to inclu
admin
2013-09-16
26
问题
More artificial reefs(礁石)are being lowered into the ocean now than ever before. But as artificial-reef initiatives grow to include more coastal regions and a wider【C1】______of aged infrastructure(基础设施), some scientists worry that the commercial interests of fishing, diving and trash【C2】______are driving efforts that should be environmental. 【C3】______that’s the case, they warn. 【C4】______reefs may ultimately give way to an underwater junkyard. "【C5】______it’s one of these things where people take a very【C6】______view—drop something in the water and a bunch of fish come and that’s wonderful, " says Bohnsack, a fisheries biologist. "The reality is not so simple. "
Do man-made reefs【C7】______ecosystems that have been destroyed by pollution, overfishing and global warming? Or do they merely attract existing populations away from natural habitats(栖息地), concentrating them【C8】______unnatural ways and making them more【C9】______to overfishing? "In a lot of cases, that question has been answered, " says Bohnsack. "But supporters of reefing aren’t too happy with the answer, so they【C10】______it. " Research shows that artificial reefs only【C11】______fish populations when habitat is the limiting factor. In many cases. it isn’t. Overfishing is the bigger criminal, and artificial reefs only make the problem【C12】______.
Not everyone agrees. By【C13】______fishing restrictions, reef coordinators say they can【C14】______against the overfishing of vulnerable species. They believe the overfishing issue is manageable.
【C15】______, there’s the question of safety and durability. The government is still cleaning up an ill-fated 1970s attempt at artificial reefing that employed more than 2 million tires【C16】______together with weak metal clips off the coast of southern Florida. The tires came【C17】______from one another during a rash of【C18】______storms. Since then, they have been【C19】______around the ocean floor, destroying natural reefs, polluting the water and occasionally washing【C20】______on shore.
【C19】
选项
A、sinking
B、rolling
C、floating
D、flowing
答案
B
解析
动词辨析题。此处意思是:它们就在海底到处滚动,破坏天然礁石。污染海水,时而还会被冲上岸边。根据上下文,这些轮胎对周围环境造成破坏,故选rolling“滚动”。
转载请注明原文地址:https://kaotiyun.com/show/Ep97777K
0
大学英语六级
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