课堂新坐标江苏专版2017高考英语二轮复习与策略第1部分专题3阅读理解类型6生态环保课件

63．D [推理判断题。根据第一、二段内容可知，20 世纪 80 年代，由于触 电和铅中毒，加利福尼亚州的秃鹰濒临灭绝，20 世纪 80 年代末，仅剩的几只秃 鹰从野外被带回繁殖，由此可推断正是秃鹰濒临灭绝才引起了研究人员的注意 和兴趣，故选 D 项。]
64．B [细节理解题。根据第三段内容可知，电线一直是使秃鹰丧命的杀 手，并且解释原因说，秃鹰晚上休息的时候看不见电线，而它们宽大的翅膀正 好同时搭在两根电线上，于是它们立刻就被电死了，故选 B 项。]
So scientists have come up with a shocking idea.Tall poles，placed in large training areas，teach the birds to stay clear of electrical lines by giving them a painful but undeadly electric shock.Before the training was introduced，66% of set－free birds died of electrocution.This has now dropped to 18%.
A (2016· 盐城三模) For 150 million years during the age of the dinosaurs ，a group of dolphin－like reptiles called ichthyosaurs ruled the ocean －until everything started to go wrong. After multiplying into about 100 known species， ichthyosaurs began to disappear from the oceans around the middle of the Cretaceous period ，a time of turbulent(混乱 的)changes in the environment.The aquatic(水产的)reptiles went extinct 28 million years before the rest of their dinosaur cohort.
63．California condors attract researchers' interest because they ________． A．are active at night B．had to be bred in the wild C．are found only in California D．almost died out in the 1980s
That was a turbulent time to live on Earth.The poles were nearly ice－free， causing sea levels to reach great heights.Temperatures were among the hottest the planet has seen in the last 250 million years. Scientists have blamed the demise of the ichthyosaurs on their inability to keep up with other predators or the loss of key prey species.But a new study by Valentin Fischer，a paleontologist who studies ichthyosaurs at the University of Liege in Belgium，and his colleagues says neither of these explanations could account for the scale and speed of the die－off.
Lead poisoning has proved more difficult to deal with.When condors eat dead bodies of other animals containing lead，they absorb large quantities of lead.This affects their nervous systems and ability to produce baby birds，and can lead to kidney(肾) failure and death.So condors with high levels of lead are sent to Los Angeles Zoo，where they are treated with calcium EDTA，a chemical that removes lead from the blood over several days.This work is starting to pay off.The annual death rate for adult condors has dropped from 38% in 2000 to 5.4% in 2011.
Rideout's team thinks that the California condors' average survival time in the wild is now just under eight years.“ Although these measures are not effective forever，they are vital for now， ” he says.“They are truly good birds that are worth every effort we put into recovering them.”
California condors are North America's largest birds， with wing－length of up to 3 meters.In the 1980s，electrical lines and lead poisoning( 铅中毒 ) nearly drove them to
66．This passage shows that ________． A．the average survival time of condors is satisfactory B．Rideout's research interest lies in electric engineering C．the efforts to protect condors have brought good results D．researchers have found the final answers to the problem
Scientists have been unable to find a singular cataclysmic event ，such as a volcanic eruption or meteorite strike ， that could explain ichthyosaurs' abrupt disappearance from the fossil record. Now researchers have new explanation for the lizard fish's demise: They had lost their ability to adapt to a swiftly changing climate. The aquatic lizards thrived throughout the early years of the dinosaurs in the Permian，Triassic and Jurassic periods.Then came the Cretaceous.
64．Researchers have found electrical lines are ________． A．blocking condors' journey home B．big killers of California condors C night D．used to keep condors away
65．D [细节理解题。根据第五段内容可知，铅中毒影响了秃鹰的神经系 统和繁殖能力(affects their nervous systems and ability to produce baby birds)，并且 可以导致它们肾衰竭和死亡，故选 D 项。]
66．C [推理判断题。本文主要介绍了美国加利福尼亚秃鹰濒临灭绝以及 科研人员为挽救它们而展开的救援和研究工作 ， 且实施的措施有了回报(pay off)，故选 C 项。]
dying out.Now，electric shock training and medical treatment are helping to rescue these big birds.
California condor
In the late 1980s，the last few condors were taken from the wild to be bred(繁 殖)．Since 1992，there have been multiple reintroductions to the wild，and there are now more than 150 flying over California and nearby Arizona，Utah and Baja in Mexico. Electrical lines have been killing them off.“As they go in to rest for the night， they just don't see the power lines， ” says Bruce Rideout of San Diego Zoo.Their wings can bridge the gap between lines， resulting in electrocution (电死) if they touch two lines at once.