6.In 1985,a lionfish was caught off the coast of Florida.Now they can be found not only in the Atlantic Ocean but also in the Gulf of Mexico and the Caribbean Sea.And they are continuing to move south.Lionfish are native to the Indian and western Pacific Oceans.So how did they end up in the Atlantic?Scientists believe some pet owners abandoned their unwanted lionfish and poured them into the sea.Little did they know the trouble their actions would cause.
The Atlantic Ocean turned out to be a comfortable home for lionfish.Their venomous spines (毒刺) prot ect them from sharks and other fish.Female lionfish can spawn (產卵) every few days,producing as many as 2 million eggs per year.Other big fish would have competed with lionfish for food.But overfishing has removed many of these large fish.As a result,the fish have eaten so much that they have grown to be more than three times the size of their cousins in the Pacific and Indian Oceans."They eat mostly fish,"says Stephanie Green,a scientist at Oregon State University.
All that eating has caused great changes.Scientists have found that when lionfish are present somewhere,many other fish,which are small enough for them to eat,disappear.Some of the fish they eat are greatly missed in their habitats.For example,parrotfish eat certain plants off corals (珊瑚),which allows corals to grow better.But they are now disappearing due to lionfish.
Scientists say lionfish are here to stay.But there are ways to deal with the problem.The key,says Green,is to keep lionfish numbers in check.In Florida,divers can now go through a special training program and get certified (授予合格證書) to catch lionfish in areas where fishing is not usually allowed.And a number of restaurants have added the fish to the menu."It's going to be a long-term battle,but the missing sea species will come back someday,"says Green.
25.What can we learn about lionfish?D
A.Most of them have gathered in the Atlantic.
B.All of them are almost the same size.
C.They eat other big fish and even sharks.
D.Its population is growing very quickly.
26.Parrotfish were mentioned to show lionfish'sB.
A.loneliness
B.harmfulness
C.weakness
D.carelessness
27.What is Stephanie Green's attitude towards the battle against lionfish?C
A.She doubts it.
B.She is worried about it.
C.She is hopeful of it.
D.She thinks it is against the law.
分析 本文講述了數量大、食量大的lionfish破壞了大西洋的生態(tài)平衡,導致一些其他的魚銷聲匿跡.科學家采取措施控制liomfish的數量并努力讓消失了的海洋生物重新出現.
解答 25.D推理判斷題.根據第二段第三句話"Female lionfish can spawn (產卵) every few days,producing as many as 2 million eggs per year."可以推斷出lionfish的數量增長的很快.故選D.
26.B推理判斷題.根據第三段第三句話"For example,parrotfish eat certain plants off corals(珊瑚),which allows corals to grow better.But they are now disappearing due to lionfish."可以推斷出parrotfish的消失證明了lionfish的傷害性.loneliness孤獨;carelessness粗心;weakness虛弱 harmfulness傷害.故選B.
27.C推理判斷題.根據最后一句話"It's going to be a long-term battle,but the missing sea species will come back someday,"says Green.可以推斷出Green對與lionfish的戰(zhàn)斗抱有很大的希望.故選C.
點評 本文是一個人文地理類閱讀理解,題目涉及多道細節(jié)理解題,做題時結合原文和題目有針對性的找出相關語句進行仔細分析,結合選項選出正確答案.推理判斷題也是要在抓住關鍵句子的基礎上合理的分析才能得出正確答案,切忌胡亂猜測,一定要做到有理有據.