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2.The Lionfish Invasion!
Lionfish are popular saltwater aquarium(水族箱) fish all over the world,especially in the United States.Nowadays,they also live in Atlantic waters off the East Coast of the United States.These lionfish are what scientists call an invasive(侵入的) species(物种) or an"alien invader."
Local divers off the coast of North Carolina were not expecting to see what they found one day in August 2002-the beautiful lionfish,common to the warm waters of the western Pacific,but unknown of the Carolina coast.They provided the first solid evidence that lionfish were in the Atlantic.
A year later,scientists documented 19lionfish sightings at eight locations along the North Carolina continental shelf.Then,lionfish were observed off the coasts of Florida,Georgia,and South Carolina,and even as far north as Long Island,New York!Between 2000and 2003,lionfish sightings were reported at 16different shipwrecks and natural hard bottom locations.During a summer 2004research expedition,NOAA(The National Oceanic and Atmospheric Administration) scientists collected 155lionfish at 19different locations off the North Carolina coast alone.The jump in numbers and distributions over such a short time strongly indicates that the lionfish is reproducing in the Atlantic Ocean.If this is true,it's the first time that a western Pacific fish has populated the U.S.Atlantic coast.
These lionfish were likely released on purpose when people no longer wanted them!The swift and warm Gulf Stream,which transported the floating lionfish eggs from Florida northward,helped the lionfish's Atlantic journey.In Florida waters and along the continental shelf near the Gulf Stream the temperatures are very similar to the lionfish's native waters.
However,from north Florida upward,the waters along the coastline are too cold in the winter for lionfish to survive.Scientists expect them to survive the winter only at water depths greater than 120ft because this is where the Gulf Stream has influence all year long.Very importantly,the types of predators(食肉动物) and competitors present in the Atlantic are very different from the native range of the lionfish.Generally,the lionfish have not been found to endanger marine ecosystems because they were not likely to survive long.

63.Scientists call the lionfish an"alien invader"because the lionfishC.
A.have damaged the native species
B.are able to live in a new environment
C.came from one place and spread to another
D.will attack other species with their poisonous teeth
64.How does the author support the reproducing of lionfish in the Atlantic in Para.3?B
A.By analyzing causes.
B.By providing figures.
C.By raising questions.
D.By expressing opinions.
65.Which of the following is the main idea of the passage?D
A.Lionfish got into the Atlantic Ocean in 2002.
B.Lionfish will not live long in the new environment.
C.Lionfish is a popular aquarium fish in the United States.
D.Lionfish has been populating the waters of the Atlantic Ocean.
66.What is the author's attitude towards the lionfish invasion?C
A.Serious.B.Disapproving.C.Optimistic.D.Indifferent.

分析 本文属于说明文阅读,作者通过这篇文章主要向我们描述了狮子鱼已经在在大西洋生存下来,几乎填充了整个大西洋,但由于它的寿命短暂,目前还不会造成什么危险.

解答 63.C.推理判断题.根据文章第一段"Nowadays,they also live in Atlantic waters off the East Coast of the United States.These lionfish are what scientists call an invasive(侵入的) species(物种) or an"alien invader"可知科学家称狮子鱼"入侵者"因为狮子鱼能够在另一个地方繁殖和生存;故选C.
64.B.细节理解题.根据文章第三段"Between 2000and 2003,lionfish sightings were reported at 16different shipwrecks and natural hard bottom locations.During a summer 2004research expedition,NOAA(The National Oceanic and Atmospheric Administration) scientists collected 155lionfish at 19different locations off the North Carolina coast alone"可知作者支持狮子鱼生活在大西洋的证据是科学家提供的数据;故选B.
65.D.主旨大意题.通读全文,可知文章主要讲了狮子鱼已经在在大西洋生存下来,几乎填充了整个大西洋;故选D.
66.C.推理判断题.通读全文,作者运用数据等科学事实描述了狮子鱼入侵的事实,同时也说明了它此时的危害程度,由此可知,作者的态度是客观的;故选C.

点评 考察学生的细节理解和推理判断能力,做细节理解题时一定要找到文章中的原句,和题干进行比较,再做出正确的选择.在做推理判断题不要以个人的主观想象代替文章的事实,要根据文章事实进行合乎逻辑的推理判断.

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