【題目】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) protect them from sharks and other fish. Female lionfish can spawn (產(chǎn)卵) every few days, producing as many as 2 million eggs per year. Other big fish would have competed with lionfish for food. Bet overfishing has removed many of these large fish. As a result, the fish have eaten so much that they have grown to be more then 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, drivers can now go though 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.
【1】What can we learn about lionfish?
A. Its population is growing very quickly.
B. All of them are almost the same size.
C. They eat other big fish and even sharks
D. Most of them have gathered in the Atlantic.
【2】Parrotfish were mentioned to show lionfish’s _____.
A. loneliness B. carelessness
C. weakness D. harmfulness
【3】What is Stephanie Green’s attitude to the battle against lionfish?
A. She doubts it.
B. She is hopeful of it.
C. She is worried about it.
D. She thinks it is against the law.
【答案】
【1】A
【2】D
【3】B
【解析】
試題分析:本文講述了數(shù)量大、食量大的lionfish破壞了大西洋的生態(tài)平衡,導(dǎo)致一些其他的魚銷聲匿跡?茖W(xué)家采取措施控制liomfish的數(shù)量并努力讓消失了的海洋生物重新出現(xiàn)。
【1】A推理判斷題。根據(jù)第二段第三句話“Female lionfish can spawn (產(chǎn)卵) every few days, producing as many as 2 million eggs per year.”可以推斷出lionfish的數(shù)量增長(zhǎng)的很快。故選A。
【2】D推理判斷題。根據(jù)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。A. loneliness孤獨(dú);B. carelessness粗心;C. weakness虛弱D. harmfulness傷害。故選D。
【3】B推理判斷題。根據(jù)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(duì)與lionfish的戰(zhàn)斗抱有很大的希望。故選B。
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