4．On a dark night，11-year-old Joe was playing hide-and-seek with his friends in the backyard when he thought he saw Magellan-a huge housecat．However，when the cat suddenly jumped on his head，Joe found it turned out a young cougar．He backed away from the animal，then turned and ran inside the house．
Cougar encounters like this one are becoming increasingly common in the U．S．Most people assume that's because cougar populations are growing，or because the big cats are coming into closer contact with the expanding web of human suburbs．But Professor Robert Wielgus at Washington State University argues that poorly designed hunting policies might be causing an increase in cougar-human conflicts．
Wielgus's research teams have been fitting the big cats with radio collars and monitoring their movements．They find that the cougar population is actually declining rapidly and almost no male cougars are over four years of age．And a study shows that the heavily hunted area has five times as many cougar complaints as the lightly hunted area-even though the density of cougars is about the same in both areas．
Wielgus suspects that hunting policies，which allow older males to be killed to keep cougar populations in check，were the culprit and teenage cougars in the heavily hunted area may be responsible for most of the trouble．To test his theory，he adds two more groups of cougars to the tracking program-one in a heavily hunted area and another in a comparable but lightly hunted area．He concludes that heavy hunting indeed almost wipes out older males and the population structure in the heavily hunted area shifts toward younger animals．
With these findings，Wielgus believes without adults to keep them under control，the disorderly teens are more likely to come into conflict with humans，farm animals and pets．
Wielgus's ideas don't sit well with everyone．"Hunting definitely does cause lots of teenage males to flow in，but I don't yet see solid proof that they are more likely to cause trouble than older cats，"says the University of Montana's Robinson．"In many cases，the new arrivals have been squeezed out of remote wilderness habitat and forced into areas where they are more likely to encounter humans．I think humans are primarily responsible for all the interaction you see．We're moving into these areas where cougars and deer are，"according to Alldredge，a researcher at the Colorado Division of Wildlife．
We may not understand what makes 18-year-old males more likely than 48-year-old men to do dangerous things，Wielgus says，but we know that the world would be a different place，if teenagers were in charge．
67．The passage begins with a story to A．
A．lead into the topic
B．describe an incident
C．show the author's attitude
D．warn of the dangers of cougars
68．The underline word"culprit"in Para.4is closest in meaning to D．
A．effect
B．evidence
C．target
D．cause
69．Which of the following is true？B
A．Alldredge agrees hunting results in the arrival of lots of teens．
B．Robinson doubts age is a key factor in human-cougar conflicts．
C．Alldredge believes killing older males may cause a bigger threat．
D．Robinson holds humans are to blame for the fall of older males．
70．What might Wielgus suggest to reduce cougar attacks？D
A．Driving teenage cougars back into their natural habitat．
B．Getting people to move out of the areas where cougars are．
C．Forbidding children to play in the backyard by themselves．
D．Revising hunting policies to ensure a healthy cougar population．
分析 本文主要是講專家關(guān)于美洲獅管制的議論以及在此管制制度下美洲獅惹出的事端的評論．
解答 67．答案 A 寫作意圖題．本文主要是講專家關(guān)于美洲獅管制的議論，用孩子捉迷藏開篇實(shí)際是為了引出話題，故答案選A．
68．答案 D 詞義猜測題．從后面的be responsible for most ofthe trouble可以看出是惹出事端，因此用cause來解釋，故答案選D．
69．答案 B 細(xì)節(jié)理解題．從倒數(shù)第二段Hunting definitely doescause lots of teenage males to flow in，but I don't yet see solid proof that they are more likely to causetrouble than older cats，"says the University of Montana's Robinson的可以得出Montana's Robinson懷疑年齡是人與美洲獅沖突的關(guān)鍵原因．故答案選B．
70．答案 D 細(xì)節(jié)理解題．從文中的第四、五段中Wielgus對于現(xiàn)行的關(guān)于美洲獅的管制以及在此管制制度下美洲獅惹出的事端的評論可以看出，Wielgus認(rèn)為政策是需要修訂的，故答案選D．
點(diǎn)評 首先對原文材料迅速瀏覽，掌握全文的主旨大意．因?yàn)殚喿x理解題一般沒有標(biāo)題，所以，速讀全文，抓住中心主旨很有必要，在速讀的過程中，應(yīng)盡可能多地捕獲信息材料．
其次，細(xì)讀題材，各個(gè)擊破．掌握全文的大意之后，細(xì)細(xì)閱讀文章后的問題，弄清每題要求后，帶著問題，再回到原文中去尋找、捕獲有關(guān)信息．
要善于抓住每段的主題句，閱讀時(shí)，要有較強(qiáng)的針對性．對于捕獲到的信息，要做認(rèn)真分析，仔細(xì)推敲，理解透徹，只有這樣，針對題目要求，才能做到穩(wěn)、準(zhǔn)．
