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揚州大學英語考博復習題(編輯修改稿)

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【文章內容簡介】 olve it. Coastal organisms in ballast water that is flushed into midocean would not survive. Such a ban has worked for North American Inland Waterway. But it would be hard to enforce it worldwide. Heating ballast water or straining it should also halt the species spread. But before any such worldwide regulations were imposed, scientists would need a clearer view of what is going on. The continuous shuffling of marine organisms has changed the biology of the sea on a global scale. It can have devastating effects as in the case of the American b jellyfish that recently invaded the Black Sea. It has destroyed that sea39。s anchovy fishery by eating anchovy eggs. It may soon spread to western and northern European waters. The maritime nations that created the biological conveyor belt should support a coordinated international effort to find out what is going on and what should be done about it.36. According to Dr. Carlton, ocean organisms are ____. A. being moved to new environments. B. destroying the planet. C. succumbing to the zebra mussel. D. developing alien characteristics.37. Oceanographers are concerned because ____. A. their knowledge of this phenomenon is limited. B. they believe the oceans are dying. C. they fear an invasion from outerspace. D. they have identified thousands of alien webs.. It can be inferred from the article that banning ballast dumps in coastal waters proved successful in _______. A. North American Inland Waterway B. the globe C. Europe D. America38. According to Marine ecologists, transplanted marine species ____. A. are all patible with one another. B. may upset the ecosystems of coastal waters. C. can only survive in their home waters. D. sometimes disrupt shipping lanes.39. The identified cause of the problem is ____. A. the rapidity with which larvae mature. B. a mon practice of the shipping industry. C. a centuries old species. D. the world wide movement of ocean currents.40. The article suggests that a solution to the problem ____. A. is unlikely to be identified. B. must precede further research. C. is hypothetically easy. D. will limit global shipping.Passion 3The sea lay like an unbroken mirror all around the pinegirt, lonely shores of Orr39。s Island. Tall, kingly spruces wore their regal crowns of cones high in air, sparkling with diamonds of clear exuded gum。 vast old hemlocks of primeval growth stood in thei

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