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1、2024年衡水金卷先享题英语四
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3、2024衡水金卷分科综合卷英语
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5、2024衡水金卷先享题答案高三一轮英语
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10、2024衡水金卷先享题答案英语二

cThe invasive()species,also called introduced species or foreign species,is anyonative species that significanty changeordamages theosysemit invades.Such speciesmay arrive in new areas through naturalmigration,but they are often introduced by the activi-ties of other species.Human activities,such as those involved in global commerce and the pettrade,are considered to be the most common ways in which invasive plants,animals,microbes,and other organisms are transported to new habitats.Most intoduced speciesdo notsuvivextened periodsin ew habitats,because they donot possess the necessary adaptations to adjust to the challenges posed by their new surround-ings.Some introduced species may become invasive when they possess a built-in competitiveadvantage over native species in invaded areas.They change native food chains and in somecases even get to the top of the food chains,which means the ecosystem lacks natural enemycapable of keeping them in check.Under these circumstances,new arrivals can get the chanceto reproduce in large numbers.The ecological damage that tends to follow such invasions often reduces the ecosystem'sbiodiversity and causes economic harm to people who depend on the ecosystem's biological re-sources.Invasive species may be so good at catching preys that victim populations decline overtime,and many victim species die out in the affected ecosystem.Other invasive species,incontrast,may prevent native species from obtaining food,living space,or other resources.Over time,invasive species can effectively replace native ones,often forcing the localizedextinction of many native species.Invasive plants and animals may also serve as disease carri-ers that spread parasites (and viruses that may further do harm to the invaded area.28.How do introduced species mainly travel to a new place?A.Through natural reproduction.B.Through natural migrationC.Through human activities.D.Through social interactions.29.What happens to most introduced species in new habitats?A.They become extinct worldwide.B.They survive from any challenges.C.They dominate the new world,D.They die off in a short period.30.What does the underlined word "preys"in paragraph 3 refer to?A.Creatures that are hunted and eatenB.Species that die out in a new place.C.Species at the top of food chains.D.Creatures at the bottom of food chains.【高三英语第6页（共12页）】·23-476C·CS扫描全能王